11c13f3c9SIngo Molnar /* 21c13f3c9SIngo Molnar * numa.c 31c13f3c9SIngo Molnar * 41c13f3c9SIngo Molnar * numa: Simulate NUMA-sensitive workload and measure their NUMA performance 51c13f3c9SIngo Molnar */ 61c13f3c9SIngo Molnar 71c13f3c9SIngo Molnar #include "../perf.h" 81c13f3c9SIngo Molnar #include "../builtin.h" 91c13f3c9SIngo Molnar #include "../util/util.h" 101c13f3c9SIngo Molnar #include "../util/parse-options.h" 111c13f3c9SIngo Molnar 121c13f3c9SIngo Molnar #include "bench.h" 131c13f3c9SIngo Molnar 141c13f3c9SIngo Molnar #include <errno.h> 151c13f3c9SIngo Molnar #include <sched.h> 161c13f3c9SIngo Molnar #include <stdio.h> 171c13f3c9SIngo Molnar #include <assert.h> 181c13f3c9SIngo Molnar #include <malloc.h> 191c13f3c9SIngo Molnar #include <signal.h> 201c13f3c9SIngo Molnar #include <stdlib.h> 211c13f3c9SIngo Molnar #include <string.h> 221c13f3c9SIngo Molnar #include <unistd.h> 231c13f3c9SIngo Molnar #include <pthread.h> 241c13f3c9SIngo Molnar #include <sys/mman.h> 251c13f3c9SIngo Molnar #include <sys/time.h> 261c13f3c9SIngo Molnar #include <sys/wait.h> 271c13f3c9SIngo Molnar #include <sys/prctl.h> 281c13f3c9SIngo Molnar #include <sys/types.h> 291c13f3c9SIngo Molnar 301c13f3c9SIngo Molnar #include <numa.h> 311c13f3c9SIngo Molnar #include <numaif.h> 321c13f3c9SIngo Molnar 331c13f3c9SIngo Molnar /* 341c13f3c9SIngo Molnar * Regular printout to the terminal, supressed if -q is specified: 351c13f3c9SIngo Molnar */ 361c13f3c9SIngo Molnar #define tprintf(x...) do { if (g && g->p.show_details >= 0) printf(x); } while (0) 371c13f3c9SIngo Molnar 381c13f3c9SIngo Molnar /* 391c13f3c9SIngo Molnar * Debug printf: 401c13f3c9SIngo Molnar */ 411c13f3c9SIngo Molnar #define dprintf(x...) do { if (g && g->p.show_details >= 1) printf(x); } while (0) 421c13f3c9SIngo Molnar 431c13f3c9SIngo Molnar struct thread_data { 441c13f3c9SIngo Molnar int curr_cpu; 451c13f3c9SIngo Molnar cpu_set_t bind_cpumask; 461c13f3c9SIngo Molnar int bind_node; 471c13f3c9SIngo Molnar u8 *process_data; 481c13f3c9SIngo Molnar int process_nr; 491c13f3c9SIngo Molnar int thread_nr; 501c13f3c9SIngo Molnar int task_nr; 511c13f3c9SIngo Molnar unsigned int loops_done; 521c13f3c9SIngo Molnar u64 val; 531c13f3c9SIngo Molnar u64 runtime_ns; 541c13f3c9SIngo Molnar pthread_mutex_t *process_lock; 551c13f3c9SIngo Molnar }; 561c13f3c9SIngo Molnar 571c13f3c9SIngo Molnar /* Parameters set by options: */ 581c13f3c9SIngo Molnar 591c13f3c9SIngo Molnar struct params { 601c13f3c9SIngo Molnar /* Startup synchronization: */ 611c13f3c9SIngo Molnar bool serialize_startup; 621c13f3c9SIngo Molnar 631c13f3c9SIngo Molnar /* Task hierarchy: */ 641c13f3c9SIngo Molnar int nr_proc; 651c13f3c9SIngo Molnar int nr_threads; 661c13f3c9SIngo Molnar 671c13f3c9SIngo Molnar /* Working set sizes: */ 681c13f3c9SIngo Molnar const char *mb_global_str; 691c13f3c9SIngo Molnar const char *mb_proc_str; 701c13f3c9SIngo Molnar const char *mb_proc_locked_str; 711c13f3c9SIngo Molnar const char *mb_thread_str; 721c13f3c9SIngo Molnar 731c13f3c9SIngo Molnar double mb_global; 741c13f3c9SIngo Molnar double mb_proc; 751c13f3c9SIngo Molnar double mb_proc_locked; 761c13f3c9SIngo Molnar double mb_thread; 771c13f3c9SIngo Molnar 781c13f3c9SIngo Molnar /* Access patterns to the working set: */ 791c13f3c9SIngo Molnar bool data_reads; 801c13f3c9SIngo Molnar bool data_writes; 811c13f3c9SIngo Molnar bool data_backwards; 821c13f3c9SIngo Molnar bool data_zero_memset; 831c13f3c9SIngo Molnar bool data_rand_walk; 841c13f3c9SIngo Molnar u32 nr_loops; 851c13f3c9SIngo Molnar u32 nr_secs; 861c13f3c9SIngo Molnar u32 sleep_usecs; 871c13f3c9SIngo Molnar 881c13f3c9SIngo Molnar /* Working set initialization: */ 891c13f3c9SIngo Molnar bool init_zero; 901c13f3c9SIngo Molnar bool init_random; 911c13f3c9SIngo Molnar bool init_cpu0; 921c13f3c9SIngo Molnar 931c13f3c9SIngo Molnar /* Misc options: */ 941c13f3c9SIngo Molnar int show_details; 951c13f3c9SIngo Molnar int run_all; 961c13f3c9SIngo Molnar int thp; 971c13f3c9SIngo Molnar 981c13f3c9SIngo Molnar long bytes_global; 991c13f3c9SIngo Molnar long bytes_process; 1001c13f3c9SIngo Molnar long bytes_process_locked; 1011c13f3c9SIngo Molnar long bytes_thread; 1021c13f3c9SIngo Molnar 1031c13f3c9SIngo Molnar int nr_tasks; 1041c13f3c9SIngo Molnar bool show_quiet; 1051c13f3c9SIngo Molnar 1061c13f3c9SIngo Molnar bool show_convergence; 1071c13f3c9SIngo Molnar bool measure_convergence; 1081c13f3c9SIngo Molnar 1091c13f3c9SIngo Molnar int perturb_secs; 1101c13f3c9SIngo Molnar int nr_cpus; 1111c13f3c9SIngo Molnar int nr_nodes; 1121c13f3c9SIngo Molnar 1131c13f3c9SIngo Molnar /* Affinity options -C and -N: */ 1141c13f3c9SIngo Molnar char *cpu_list_str; 1151c13f3c9SIngo Molnar char *node_list_str; 1161c13f3c9SIngo Molnar }; 1171c13f3c9SIngo Molnar 1181c13f3c9SIngo Molnar 1191c13f3c9SIngo Molnar /* Global, read-writable area, accessible to all processes and threads: */ 1201c13f3c9SIngo Molnar 1211c13f3c9SIngo Molnar struct global_info { 1221c13f3c9SIngo Molnar u8 *data; 1231c13f3c9SIngo Molnar 1241c13f3c9SIngo Molnar pthread_mutex_t startup_mutex; 1251c13f3c9SIngo Molnar int nr_tasks_started; 1261c13f3c9SIngo Molnar 1271c13f3c9SIngo Molnar pthread_mutex_t startup_done_mutex; 1281c13f3c9SIngo Molnar 1291c13f3c9SIngo Molnar pthread_mutex_t start_work_mutex; 1301c13f3c9SIngo Molnar int nr_tasks_working; 1311c13f3c9SIngo Molnar 1321c13f3c9SIngo Molnar pthread_mutex_t stop_work_mutex; 1331c13f3c9SIngo Molnar u64 bytes_done; 1341c13f3c9SIngo Molnar 1351c13f3c9SIngo Molnar struct thread_data *threads; 1361c13f3c9SIngo Molnar 1371c13f3c9SIngo Molnar /* Convergence latency measurement: */ 1381c13f3c9SIngo Molnar bool all_converged; 1391c13f3c9SIngo Molnar bool stop_work; 1401c13f3c9SIngo Molnar 1411c13f3c9SIngo Molnar int print_once; 1421c13f3c9SIngo Molnar 1431c13f3c9SIngo Molnar struct params p; 1441c13f3c9SIngo Molnar }; 1451c13f3c9SIngo Molnar 1461c13f3c9SIngo Molnar static struct global_info *g = NULL; 1471c13f3c9SIngo Molnar 1481c13f3c9SIngo Molnar static int parse_cpus_opt(const struct option *opt, const char *arg, int unset); 1491c13f3c9SIngo Molnar static int parse_nodes_opt(const struct option *opt, const char *arg, int unset); 1501c13f3c9SIngo Molnar 1511c13f3c9SIngo Molnar struct params p0; 1521c13f3c9SIngo Molnar 1531c13f3c9SIngo Molnar static const struct option options[] = { 1541c13f3c9SIngo Molnar OPT_INTEGER('p', "nr_proc" , &p0.nr_proc, "number of processes"), 1551c13f3c9SIngo Molnar OPT_INTEGER('t', "nr_threads" , &p0.nr_threads, "number of threads per process"), 1561c13f3c9SIngo Molnar 1571c13f3c9SIngo Molnar OPT_STRING('G', "mb_global" , &p0.mb_global_str, "MB", "global memory (MBs)"), 1581c13f3c9SIngo Molnar OPT_STRING('P', "mb_proc" , &p0.mb_proc_str, "MB", "process memory (MBs)"), 1591c13f3c9SIngo Molnar OPT_STRING('L', "mb_proc_locked", &p0.mb_proc_locked_str,"MB", "process serialized/locked memory access (MBs), <= process_memory"), 1601c13f3c9SIngo Molnar OPT_STRING('T', "mb_thread" , &p0.mb_thread_str, "MB", "thread memory (MBs)"), 1611c13f3c9SIngo Molnar 1621c13f3c9SIngo Molnar OPT_UINTEGER('l', "nr_loops" , &p0.nr_loops, "max number of loops to run"), 1631c13f3c9SIngo Molnar OPT_UINTEGER('s', "nr_secs" , &p0.nr_secs, "max number of seconds to run"), 1641c13f3c9SIngo Molnar OPT_UINTEGER('u', "usleep" , &p0.sleep_usecs, "usecs to sleep per loop iteration"), 1651c13f3c9SIngo Molnar 1661c13f3c9SIngo Molnar OPT_BOOLEAN('R', "data_reads" , &p0.data_reads, "access the data via writes (can be mixed with -W)"), 1671c13f3c9SIngo Molnar OPT_BOOLEAN('W', "data_writes" , &p0.data_writes, "access the data via writes (can be mixed with -R)"), 1681c13f3c9SIngo Molnar OPT_BOOLEAN('B', "data_backwards", &p0.data_backwards, "access the data backwards as well"), 1691c13f3c9SIngo Molnar OPT_BOOLEAN('Z', "data_zero_memset", &p0.data_zero_memset,"access the data via glibc bzero only"), 1701c13f3c9SIngo Molnar OPT_BOOLEAN('r', "data_rand_walk", &p0.data_rand_walk, "access the data with random (32bit LFSR) walk"), 1711c13f3c9SIngo Molnar 1721c13f3c9SIngo Molnar 1731c13f3c9SIngo Molnar OPT_BOOLEAN('z', "init_zero" , &p0.init_zero, "bzero the initial allocations"), 1741c13f3c9SIngo Molnar OPT_BOOLEAN('I', "init_random" , &p0.init_random, "randomize the contents of the initial allocations"), 1751c13f3c9SIngo Molnar OPT_BOOLEAN('0', "init_cpu0" , &p0.init_cpu0, "do the initial allocations on CPU#0"), 1761c13f3c9SIngo Molnar OPT_INTEGER('x', "perturb_secs", &p0.perturb_secs, "perturb thread 0/0 every X secs, to test convergence stability"), 1771c13f3c9SIngo Molnar 1781c13f3c9SIngo Molnar OPT_INCR ('d', "show_details" , &p0.show_details, "Show details"), 1791c13f3c9SIngo Molnar OPT_INCR ('a', "all" , &p0.run_all, "Run all tests in the suite"), 1801c13f3c9SIngo Molnar OPT_INTEGER('H', "thp" , &p0.thp, "MADV_NOHUGEPAGE < 0 < MADV_HUGEPAGE"), 1811c13f3c9SIngo Molnar OPT_BOOLEAN('c', "show_convergence", &p0.show_convergence, "show convergence details"), 1821c13f3c9SIngo Molnar OPT_BOOLEAN('m', "measure_convergence", &p0.measure_convergence, "measure convergence latency"), 18324f1ced1SPetr Holasek OPT_BOOLEAN('q', "quiet" , &p0.show_quiet, "quiet mode"), 1841c13f3c9SIngo Molnar OPT_BOOLEAN('S', "serialize-startup", &p0.serialize_startup,"serialize thread startup"), 1851c13f3c9SIngo Molnar 1861c13f3c9SIngo Molnar /* Special option string parsing callbacks: */ 1871c13f3c9SIngo Molnar OPT_CALLBACK('C', "cpus", NULL, "cpu[,cpu2,...cpuN]", 1881c13f3c9SIngo Molnar "bind the first N tasks to these specific cpus (the rest is unbound)", 1891c13f3c9SIngo Molnar parse_cpus_opt), 1901c13f3c9SIngo Molnar OPT_CALLBACK('M', "memnodes", NULL, "node[,node2,...nodeN]", 1911c13f3c9SIngo Molnar "bind the first N tasks to these specific memory nodes (the rest is unbound)", 1921c13f3c9SIngo Molnar parse_nodes_opt), 1931c13f3c9SIngo Molnar OPT_END() 1941c13f3c9SIngo Molnar }; 1951c13f3c9SIngo Molnar 1961c13f3c9SIngo Molnar static const char * const bench_numa_usage[] = { 1971c13f3c9SIngo Molnar "perf bench numa <options>", 1981c13f3c9SIngo Molnar NULL 1991c13f3c9SIngo Molnar }; 2001c13f3c9SIngo Molnar 2011c13f3c9SIngo Molnar static const char * const numa_usage[] = { 2021c13f3c9SIngo Molnar "perf bench numa mem [<options>]", 2031c13f3c9SIngo Molnar NULL 2041c13f3c9SIngo Molnar }; 2051c13f3c9SIngo Molnar 2061c13f3c9SIngo Molnar static cpu_set_t bind_to_cpu(int target_cpu) 2071c13f3c9SIngo Molnar { 2081c13f3c9SIngo Molnar cpu_set_t orig_mask, mask; 2091c13f3c9SIngo Molnar int ret; 2101c13f3c9SIngo Molnar 2111c13f3c9SIngo Molnar ret = sched_getaffinity(0, sizeof(orig_mask), &orig_mask); 2121c13f3c9SIngo Molnar BUG_ON(ret); 2131c13f3c9SIngo Molnar 2141c13f3c9SIngo Molnar CPU_ZERO(&mask); 2151c13f3c9SIngo Molnar 2161c13f3c9SIngo Molnar if (target_cpu == -1) { 2171c13f3c9SIngo Molnar int cpu; 2181c13f3c9SIngo Molnar 2191c13f3c9SIngo Molnar for (cpu = 0; cpu < g->p.nr_cpus; cpu++) 2201c13f3c9SIngo Molnar CPU_SET(cpu, &mask); 2211c13f3c9SIngo Molnar } else { 2221c13f3c9SIngo Molnar BUG_ON(target_cpu < 0 || target_cpu >= g->p.nr_cpus); 2231c13f3c9SIngo Molnar CPU_SET(target_cpu, &mask); 2241c13f3c9SIngo Molnar } 2251c13f3c9SIngo Molnar 2261c13f3c9SIngo Molnar ret = sched_setaffinity(0, sizeof(mask), &mask); 2271c13f3c9SIngo Molnar BUG_ON(ret); 2281c13f3c9SIngo Molnar 2291c13f3c9SIngo Molnar return orig_mask; 2301c13f3c9SIngo Molnar } 2311c13f3c9SIngo Molnar 2321c13f3c9SIngo Molnar static cpu_set_t bind_to_node(int target_node) 2331c13f3c9SIngo Molnar { 2341c13f3c9SIngo Molnar int cpus_per_node = g->p.nr_cpus/g->p.nr_nodes; 2351c13f3c9SIngo Molnar cpu_set_t orig_mask, mask; 2361c13f3c9SIngo Molnar int cpu; 2371c13f3c9SIngo Molnar int ret; 2381c13f3c9SIngo Molnar 2391c13f3c9SIngo Molnar BUG_ON(cpus_per_node*g->p.nr_nodes != g->p.nr_cpus); 2401c13f3c9SIngo Molnar BUG_ON(!cpus_per_node); 2411c13f3c9SIngo Molnar 2421c13f3c9SIngo Molnar ret = sched_getaffinity(0, sizeof(orig_mask), &orig_mask); 2431c13f3c9SIngo Molnar BUG_ON(ret); 2441c13f3c9SIngo Molnar 2451c13f3c9SIngo Molnar CPU_ZERO(&mask); 2461c13f3c9SIngo Molnar 2471c13f3c9SIngo Molnar if (target_node == -1) { 2481c13f3c9SIngo Molnar for (cpu = 0; cpu < g->p.nr_cpus; cpu++) 2491c13f3c9SIngo Molnar CPU_SET(cpu, &mask); 2501c13f3c9SIngo Molnar } else { 2511c13f3c9SIngo Molnar int cpu_start = (target_node + 0) * cpus_per_node; 2521c13f3c9SIngo Molnar int cpu_stop = (target_node + 1) * cpus_per_node; 2531c13f3c9SIngo Molnar 2541c13f3c9SIngo Molnar BUG_ON(cpu_stop > g->p.nr_cpus); 2551c13f3c9SIngo Molnar 2561c13f3c9SIngo Molnar for (cpu = cpu_start; cpu < cpu_stop; cpu++) 2571c13f3c9SIngo Molnar CPU_SET(cpu, &mask); 2581c13f3c9SIngo Molnar } 2591c13f3c9SIngo Molnar 2601c13f3c9SIngo Molnar ret = sched_setaffinity(0, sizeof(mask), &mask); 2611c13f3c9SIngo Molnar BUG_ON(ret); 2621c13f3c9SIngo Molnar 2631c13f3c9SIngo Molnar return orig_mask; 2641c13f3c9SIngo Molnar } 2651c13f3c9SIngo Molnar 2661c13f3c9SIngo Molnar static void bind_to_cpumask(cpu_set_t mask) 2671c13f3c9SIngo Molnar { 2681c13f3c9SIngo Molnar int ret; 2691c13f3c9SIngo Molnar 2701c13f3c9SIngo Molnar ret = sched_setaffinity(0, sizeof(mask), &mask); 2711c13f3c9SIngo Molnar BUG_ON(ret); 2721c13f3c9SIngo Molnar } 2731c13f3c9SIngo Molnar 2741c13f3c9SIngo Molnar static void mempol_restore(void) 2751c13f3c9SIngo Molnar { 2761c13f3c9SIngo Molnar int ret; 2771c13f3c9SIngo Molnar 2781c13f3c9SIngo Molnar ret = set_mempolicy(MPOL_DEFAULT, NULL, g->p.nr_nodes-1); 2791c13f3c9SIngo Molnar 2801c13f3c9SIngo Molnar BUG_ON(ret); 2811c13f3c9SIngo Molnar } 2821c13f3c9SIngo Molnar 2831c13f3c9SIngo Molnar static void bind_to_memnode(int node) 2841c13f3c9SIngo Molnar { 2851c13f3c9SIngo Molnar unsigned long nodemask; 2861c13f3c9SIngo Molnar int ret; 2871c13f3c9SIngo Molnar 2881c13f3c9SIngo Molnar if (node == -1) 2891c13f3c9SIngo Molnar return; 2901c13f3c9SIngo Molnar 2911c13f3c9SIngo Molnar BUG_ON(g->p.nr_nodes > (int)sizeof(nodemask)); 2921c13f3c9SIngo Molnar nodemask = 1L << node; 2931c13f3c9SIngo Molnar 2941c13f3c9SIngo Molnar ret = set_mempolicy(MPOL_BIND, &nodemask, sizeof(nodemask)*8); 2951c13f3c9SIngo Molnar dprintf("binding to node %d, mask: %016lx => %d\n", node, nodemask, ret); 2961c13f3c9SIngo Molnar 2971c13f3c9SIngo Molnar BUG_ON(ret); 2981c13f3c9SIngo Molnar } 2991c13f3c9SIngo Molnar 3001c13f3c9SIngo Molnar #define HPSIZE (2*1024*1024) 3011c13f3c9SIngo Molnar 3021c13f3c9SIngo Molnar #define set_taskname(fmt...) \ 3031c13f3c9SIngo Molnar do { \ 3041c13f3c9SIngo Molnar char name[20]; \ 3051c13f3c9SIngo Molnar \ 3061c13f3c9SIngo Molnar snprintf(name, 20, fmt); \ 3071c13f3c9SIngo Molnar prctl(PR_SET_NAME, name); \ 3081c13f3c9SIngo Molnar } while (0) 3091c13f3c9SIngo Molnar 3101c13f3c9SIngo Molnar static u8 *alloc_data(ssize_t bytes0, int map_flags, 3111c13f3c9SIngo Molnar int init_zero, int init_cpu0, int thp, int init_random) 3121c13f3c9SIngo Molnar { 3131c13f3c9SIngo Molnar cpu_set_t orig_mask; 3141c13f3c9SIngo Molnar ssize_t bytes; 3151c13f3c9SIngo Molnar u8 *buf; 3161c13f3c9SIngo Molnar int ret; 3171c13f3c9SIngo Molnar 3181c13f3c9SIngo Molnar if (!bytes0) 3191c13f3c9SIngo Molnar return NULL; 3201c13f3c9SIngo Molnar 3211c13f3c9SIngo Molnar /* Allocate and initialize all memory on CPU#0: */ 3221c13f3c9SIngo Molnar if (init_cpu0) { 3231c13f3c9SIngo Molnar orig_mask = bind_to_node(0); 3241c13f3c9SIngo Molnar bind_to_memnode(0); 3251c13f3c9SIngo Molnar } 3261c13f3c9SIngo Molnar 3271c13f3c9SIngo Molnar bytes = bytes0 + HPSIZE; 3281c13f3c9SIngo Molnar 3291c13f3c9SIngo Molnar buf = (void *)mmap(0, bytes, PROT_READ|PROT_WRITE, MAP_ANON|map_flags, -1, 0); 3301c13f3c9SIngo Molnar BUG_ON(buf == (void *)-1); 3311c13f3c9SIngo Molnar 3321c13f3c9SIngo Molnar if (map_flags == MAP_PRIVATE) { 3331c13f3c9SIngo Molnar if (thp > 0) { 3341c13f3c9SIngo Molnar ret = madvise(buf, bytes, MADV_HUGEPAGE); 3351c13f3c9SIngo Molnar if (ret && !g->print_once) { 3361c13f3c9SIngo Molnar g->print_once = 1; 3371c13f3c9SIngo Molnar printf("WARNING: Could not enable THP - do: 'echo madvise > /sys/kernel/mm/transparent_hugepage/enabled'\n"); 3381c13f3c9SIngo Molnar } 3391c13f3c9SIngo Molnar } 3401c13f3c9SIngo Molnar if (thp < 0) { 3411c13f3c9SIngo Molnar ret = madvise(buf, bytes, MADV_NOHUGEPAGE); 3421c13f3c9SIngo Molnar if (ret && !g->print_once) { 3431c13f3c9SIngo Molnar g->print_once = 1; 3441c13f3c9SIngo Molnar printf("WARNING: Could not disable THP: run a CONFIG_TRANSPARENT_HUGEPAGE kernel?\n"); 3451c13f3c9SIngo Molnar } 3461c13f3c9SIngo Molnar } 3471c13f3c9SIngo Molnar } 3481c13f3c9SIngo Molnar 3491c13f3c9SIngo Molnar if (init_zero) { 3501c13f3c9SIngo Molnar bzero(buf, bytes); 3511c13f3c9SIngo Molnar } else { 3521c13f3c9SIngo Molnar /* Initialize random contents, different in each word: */ 3531c13f3c9SIngo Molnar if (init_random) { 3541c13f3c9SIngo Molnar u64 *wbuf = (void *)buf; 3551c13f3c9SIngo Molnar long off = rand(); 3561c13f3c9SIngo Molnar long i; 3571c13f3c9SIngo Molnar 3581c13f3c9SIngo Molnar for (i = 0; i < bytes/8; i++) 3591c13f3c9SIngo Molnar wbuf[i] = i + off; 3601c13f3c9SIngo Molnar } 3611c13f3c9SIngo Molnar } 3621c13f3c9SIngo Molnar 3631c13f3c9SIngo Molnar /* Align to 2MB boundary: */ 3641c13f3c9SIngo Molnar buf = (void *)(((unsigned long)buf + HPSIZE-1) & ~(HPSIZE-1)); 3651c13f3c9SIngo Molnar 3661c13f3c9SIngo Molnar /* Restore affinity: */ 3671c13f3c9SIngo Molnar if (init_cpu0) { 3681c13f3c9SIngo Molnar bind_to_cpumask(orig_mask); 3691c13f3c9SIngo Molnar mempol_restore(); 3701c13f3c9SIngo Molnar } 3711c13f3c9SIngo Molnar 3721c13f3c9SIngo Molnar return buf; 3731c13f3c9SIngo Molnar } 3741c13f3c9SIngo Molnar 3751c13f3c9SIngo Molnar static void free_data(void *data, ssize_t bytes) 3761c13f3c9SIngo Molnar { 3771c13f3c9SIngo Molnar int ret; 3781c13f3c9SIngo Molnar 3791c13f3c9SIngo Molnar if (!data) 3801c13f3c9SIngo Molnar return; 3811c13f3c9SIngo Molnar 3821c13f3c9SIngo Molnar ret = munmap(data, bytes); 3831c13f3c9SIngo Molnar BUG_ON(ret); 3841c13f3c9SIngo Molnar } 3851c13f3c9SIngo Molnar 3861c13f3c9SIngo Molnar /* 3871c13f3c9SIngo Molnar * Create a shared memory buffer that can be shared between processes, zeroed: 3881c13f3c9SIngo Molnar */ 3891c13f3c9SIngo Molnar static void * zalloc_shared_data(ssize_t bytes) 3901c13f3c9SIngo Molnar { 3911c13f3c9SIngo Molnar return alloc_data(bytes, MAP_SHARED, 1, g->p.init_cpu0, g->p.thp, g->p.init_random); 3921c13f3c9SIngo Molnar } 3931c13f3c9SIngo Molnar 3941c13f3c9SIngo Molnar /* 3951c13f3c9SIngo Molnar * Create a shared memory buffer that can be shared between processes: 3961c13f3c9SIngo Molnar */ 3971c13f3c9SIngo Molnar static void * setup_shared_data(ssize_t bytes) 3981c13f3c9SIngo Molnar { 3991c13f3c9SIngo Molnar return alloc_data(bytes, MAP_SHARED, 0, g->p.init_cpu0, g->p.thp, g->p.init_random); 4001c13f3c9SIngo Molnar } 4011c13f3c9SIngo Molnar 4021c13f3c9SIngo Molnar /* 4031c13f3c9SIngo Molnar * Allocate process-local memory - this will either be shared between 4041c13f3c9SIngo Molnar * threads of this process, or only be accessed by this thread: 4051c13f3c9SIngo Molnar */ 4061c13f3c9SIngo Molnar static void * setup_private_data(ssize_t bytes) 4071c13f3c9SIngo Molnar { 4081c13f3c9SIngo Molnar return alloc_data(bytes, MAP_PRIVATE, 0, g->p.init_cpu0, g->p.thp, g->p.init_random); 4091c13f3c9SIngo Molnar } 4101c13f3c9SIngo Molnar 4111c13f3c9SIngo Molnar /* 4121c13f3c9SIngo Molnar * Return a process-shared (global) mutex: 4131c13f3c9SIngo Molnar */ 4141c13f3c9SIngo Molnar static void init_global_mutex(pthread_mutex_t *mutex) 4151c13f3c9SIngo Molnar { 4161c13f3c9SIngo Molnar pthread_mutexattr_t attr; 4171c13f3c9SIngo Molnar 4181c13f3c9SIngo Molnar pthread_mutexattr_init(&attr); 4191c13f3c9SIngo Molnar pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED); 4201c13f3c9SIngo Molnar pthread_mutex_init(mutex, &attr); 4211c13f3c9SIngo Molnar } 4221c13f3c9SIngo Molnar 4231c13f3c9SIngo Molnar static int parse_cpu_list(const char *arg) 4241c13f3c9SIngo Molnar { 4251c13f3c9SIngo Molnar p0.cpu_list_str = strdup(arg); 4261c13f3c9SIngo Molnar 4271c13f3c9SIngo Molnar dprintf("got CPU list: {%s}\n", p0.cpu_list_str); 4281c13f3c9SIngo Molnar 4291c13f3c9SIngo Molnar return 0; 4301c13f3c9SIngo Molnar } 4311c13f3c9SIngo Molnar 432b81a48eaSPetr Holasek static int parse_setup_cpu_list(void) 4331c13f3c9SIngo Molnar { 4341c13f3c9SIngo Molnar struct thread_data *td; 4351c13f3c9SIngo Molnar char *str0, *str; 4361c13f3c9SIngo Molnar int t; 4371c13f3c9SIngo Molnar 4381c13f3c9SIngo Molnar if (!g->p.cpu_list_str) 439b81a48eaSPetr Holasek return 0; 4401c13f3c9SIngo Molnar 4411c13f3c9SIngo Molnar dprintf("g->p.nr_tasks: %d\n", g->p.nr_tasks); 4421c13f3c9SIngo Molnar 4431c13f3c9SIngo Molnar str0 = str = strdup(g->p.cpu_list_str); 4441c13f3c9SIngo Molnar t = 0; 4451c13f3c9SIngo Molnar 4461c13f3c9SIngo Molnar BUG_ON(!str); 4471c13f3c9SIngo Molnar 4481c13f3c9SIngo Molnar tprintf("# binding tasks to CPUs:\n"); 4491c13f3c9SIngo Molnar tprintf("# "); 4501c13f3c9SIngo Molnar 4511c13f3c9SIngo Molnar while (true) { 4521c13f3c9SIngo Molnar int bind_cpu, bind_cpu_0, bind_cpu_1; 4531c13f3c9SIngo Molnar char *tok, *tok_end, *tok_step, *tok_len, *tok_mul; 4541c13f3c9SIngo Molnar int bind_len; 4551c13f3c9SIngo Molnar int step; 4561c13f3c9SIngo Molnar int mul; 4571c13f3c9SIngo Molnar 4581c13f3c9SIngo Molnar tok = strsep(&str, ","); 4591c13f3c9SIngo Molnar if (!tok) 4601c13f3c9SIngo Molnar break; 4611c13f3c9SIngo Molnar 4621c13f3c9SIngo Molnar tok_end = strstr(tok, "-"); 4631c13f3c9SIngo Molnar 4641c13f3c9SIngo Molnar dprintf("\ntoken: {%s}, end: {%s}\n", tok, tok_end); 4651c13f3c9SIngo Molnar if (!tok_end) { 4661c13f3c9SIngo Molnar /* Single CPU specified: */ 4671c13f3c9SIngo Molnar bind_cpu_0 = bind_cpu_1 = atol(tok); 4681c13f3c9SIngo Molnar } else { 4691c13f3c9SIngo Molnar /* CPU range specified (for example: "5-11"): */ 4701c13f3c9SIngo Molnar bind_cpu_0 = atol(tok); 4711c13f3c9SIngo Molnar bind_cpu_1 = atol(tok_end + 1); 4721c13f3c9SIngo Molnar } 4731c13f3c9SIngo Molnar 4741c13f3c9SIngo Molnar step = 1; 4751c13f3c9SIngo Molnar tok_step = strstr(tok, "#"); 4761c13f3c9SIngo Molnar if (tok_step) { 4771c13f3c9SIngo Molnar step = atol(tok_step + 1); 4781c13f3c9SIngo Molnar BUG_ON(step <= 0 || step >= g->p.nr_cpus); 4791c13f3c9SIngo Molnar } 4801c13f3c9SIngo Molnar 4811c13f3c9SIngo Molnar /* 4821c13f3c9SIngo Molnar * Mask length. 4831c13f3c9SIngo Molnar * Eg: "--cpus 8_4-16#4" means: '--cpus 8_4,12_4,16_4', 4841c13f3c9SIngo Molnar * where the _4 means the next 4 CPUs are allowed. 4851c13f3c9SIngo Molnar */ 4861c13f3c9SIngo Molnar bind_len = 1; 4871c13f3c9SIngo Molnar tok_len = strstr(tok, "_"); 4881c13f3c9SIngo Molnar if (tok_len) { 4891c13f3c9SIngo Molnar bind_len = atol(tok_len + 1); 4901c13f3c9SIngo Molnar BUG_ON(bind_len <= 0 || bind_len > g->p.nr_cpus); 4911c13f3c9SIngo Molnar } 4921c13f3c9SIngo Molnar 4931c13f3c9SIngo Molnar /* Multiplicator shortcut, "0x8" is a shortcut for: "0,0,0,0,0,0,0,0" */ 4941c13f3c9SIngo Molnar mul = 1; 4951c13f3c9SIngo Molnar tok_mul = strstr(tok, "x"); 4961c13f3c9SIngo Molnar if (tok_mul) { 4971c13f3c9SIngo Molnar mul = atol(tok_mul + 1); 4981c13f3c9SIngo Molnar BUG_ON(mul <= 0); 4991c13f3c9SIngo Molnar } 5001c13f3c9SIngo Molnar 5011c13f3c9SIngo Molnar dprintf("CPUs: %d_%d-%d#%dx%d\n", bind_cpu_0, bind_len, bind_cpu_1, step, mul); 5021c13f3c9SIngo Molnar 503b81a48eaSPetr Holasek if (bind_cpu_0 >= g->p.nr_cpus || bind_cpu_1 >= g->p.nr_cpus) { 504b81a48eaSPetr Holasek printf("\nTest not applicable, system has only %d CPUs.\n", g->p.nr_cpus); 505b81a48eaSPetr Holasek return -1; 506b81a48eaSPetr Holasek } 507b81a48eaSPetr Holasek 508b81a48eaSPetr Holasek BUG_ON(bind_cpu_0 < 0 || bind_cpu_1 < 0); 5091c13f3c9SIngo Molnar BUG_ON(bind_cpu_0 > bind_cpu_1); 5101c13f3c9SIngo Molnar 5111c13f3c9SIngo Molnar for (bind_cpu = bind_cpu_0; bind_cpu <= bind_cpu_1; bind_cpu += step) { 5121c13f3c9SIngo Molnar int i; 5131c13f3c9SIngo Molnar 5141c13f3c9SIngo Molnar for (i = 0; i < mul; i++) { 5151c13f3c9SIngo Molnar int cpu; 5161c13f3c9SIngo Molnar 5171c13f3c9SIngo Molnar if (t >= g->p.nr_tasks) { 5181c13f3c9SIngo Molnar printf("\n# NOTE: ignoring bind CPUs starting at CPU#%d\n #", bind_cpu); 5191c13f3c9SIngo Molnar goto out; 5201c13f3c9SIngo Molnar } 5211c13f3c9SIngo Molnar td = g->threads + t; 5221c13f3c9SIngo Molnar 5231c13f3c9SIngo Molnar if (t) 5241c13f3c9SIngo Molnar tprintf(","); 5251c13f3c9SIngo Molnar if (bind_len > 1) { 5261c13f3c9SIngo Molnar tprintf("%2d/%d", bind_cpu, bind_len); 5271c13f3c9SIngo Molnar } else { 5281c13f3c9SIngo Molnar tprintf("%2d", bind_cpu); 5291c13f3c9SIngo Molnar } 5301c13f3c9SIngo Molnar 5311c13f3c9SIngo Molnar CPU_ZERO(&td->bind_cpumask); 5321c13f3c9SIngo Molnar for (cpu = bind_cpu; cpu < bind_cpu+bind_len; cpu++) { 5331c13f3c9SIngo Molnar BUG_ON(cpu < 0 || cpu >= g->p.nr_cpus); 5341c13f3c9SIngo Molnar CPU_SET(cpu, &td->bind_cpumask); 5351c13f3c9SIngo Molnar } 5361c13f3c9SIngo Molnar t++; 5371c13f3c9SIngo Molnar } 5381c13f3c9SIngo Molnar } 5391c13f3c9SIngo Molnar } 5401c13f3c9SIngo Molnar out: 5411c13f3c9SIngo Molnar 5421c13f3c9SIngo Molnar tprintf("\n"); 5431c13f3c9SIngo Molnar 5441c13f3c9SIngo Molnar if (t < g->p.nr_tasks) 5451c13f3c9SIngo Molnar printf("# NOTE: %d tasks bound, %d tasks unbound\n", t, g->p.nr_tasks - t); 5461c13f3c9SIngo Molnar 5471c13f3c9SIngo Molnar free(str0); 548b81a48eaSPetr Holasek return 0; 5491c13f3c9SIngo Molnar } 5501c13f3c9SIngo Molnar 5511c13f3c9SIngo Molnar static int parse_cpus_opt(const struct option *opt __maybe_unused, 5521c13f3c9SIngo Molnar const char *arg, int unset __maybe_unused) 5531c13f3c9SIngo Molnar { 5541c13f3c9SIngo Molnar if (!arg) 5551c13f3c9SIngo Molnar return -1; 5561c13f3c9SIngo Molnar 5571c13f3c9SIngo Molnar return parse_cpu_list(arg); 5581c13f3c9SIngo Molnar } 5591c13f3c9SIngo Molnar 5601c13f3c9SIngo Molnar static int parse_node_list(const char *arg) 5611c13f3c9SIngo Molnar { 5621c13f3c9SIngo Molnar p0.node_list_str = strdup(arg); 5631c13f3c9SIngo Molnar 5641c13f3c9SIngo Molnar dprintf("got NODE list: {%s}\n", p0.node_list_str); 5651c13f3c9SIngo Molnar 5661c13f3c9SIngo Molnar return 0; 5671c13f3c9SIngo Molnar } 5681c13f3c9SIngo Molnar 569b81a48eaSPetr Holasek static int parse_setup_node_list(void) 5701c13f3c9SIngo Molnar { 5711c13f3c9SIngo Molnar struct thread_data *td; 5721c13f3c9SIngo Molnar char *str0, *str; 5731c13f3c9SIngo Molnar int t; 5741c13f3c9SIngo Molnar 5751c13f3c9SIngo Molnar if (!g->p.node_list_str) 576b81a48eaSPetr Holasek return 0; 5771c13f3c9SIngo Molnar 5781c13f3c9SIngo Molnar dprintf("g->p.nr_tasks: %d\n", g->p.nr_tasks); 5791c13f3c9SIngo Molnar 5801c13f3c9SIngo Molnar str0 = str = strdup(g->p.node_list_str); 5811c13f3c9SIngo Molnar t = 0; 5821c13f3c9SIngo Molnar 5831c13f3c9SIngo Molnar BUG_ON(!str); 5841c13f3c9SIngo Molnar 5851c13f3c9SIngo Molnar tprintf("# binding tasks to NODEs:\n"); 5861c13f3c9SIngo Molnar tprintf("# "); 5871c13f3c9SIngo Molnar 5881c13f3c9SIngo Molnar while (true) { 5891c13f3c9SIngo Molnar int bind_node, bind_node_0, bind_node_1; 5901c13f3c9SIngo Molnar char *tok, *tok_end, *tok_step, *tok_mul; 5911c13f3c9SIngo Molnar int step; 5921c13f3c9SIngo Molnar int mul; 5931c13f3c9SIngo Molnar 5941c13f3c9SIngo Molnar tok = strsep(&str, ","); 5951c13f3c9SIngo Molnar if (!tok) 5961c13f3c9SIngo Molnar break; 5971c13f3c9SIngo Molnar 5981c13f3c9SIngo Molnar tok_end = strstr(tok, "-"); 5991c13f3c9SIngo Molnar 6001c13f3c9SIngo Molnar dprintf("\ntoken: {%s}, end: {%s}\n", tok, tok_end); 6011c13f3c9SIngo Molnar if (!tok_end) { 6021c13f3c9SIngo Molnar /* Single NODE specified: */ 6031c13f3c9SIngo Molnar bind_node_0 = bind_node_1 = atol(tok); 6041c13f3c9SIngo Molnar } else { 6051c13f3c9SIngo Molnar /* NODE range specified (for example: "5-11"): */ 6061c13f3c9SIngo Molnar bind_node_0 = atol(tok); 6071c13f3c9SIngo Molnar bind_node_1 = atol(tok_end + 1); 6081c13f3c9SIngo Molnar } 6091c13f3c9SIngo Molnar 6101c13f3c9SIngo Molnar step = 1; 6111c13f3c9SIngo Molnar tok_step = strstr(tok, "#"); 6121c13f3c9SIngo Molnar if (tok_step) { 6131c13f3c9SIngo Molnar step = atol(tok_step + 1); 6141c13f3c9SIngo Molnar BUG_ON(step <= 0 || step >= g->p.nr_nodes); 6151c13f3c9SIngo Molnar } 6161c13f3c9SIngo Molnar 6171c13f3c9SIngo Molnar /* Multiplicator shortcut, "0x8" is a shortcut for: "0,0,0,0,0,0,0,0" */ 6181c13f3c9SIngo Molnar mul = 1; 6191c13f3c9SIngo Molnar tok_mul = strstr(tok, "x"); 6201c13f3c9SIngo Molnar if (tok_mul) { 6211c13f3c9SIngo Molnar mul = atol(tok_mul + 1); 6221c13f3c9SIngo Molnar BUG_ON(mul <= 0); 6231c13f3c9SIngo Molnar } 6241c13f3c9SIngo Molnar 6251c13f3c9SIngo Molnar dprintf("NODEs: %d-%d #%d\n", bind_node_0, bind_node_1, step); 6261c13f3c9SIngo Molnar 627b81a48eaSPetr Holasek if (bind_node_0 >= g->p.nr_nodes || bind_node_1 >= g->p.nr_nodes) { 628b81a48eaSPetr Holasek printf("\nTest not applicable, system has only %d nodes.\n", g->p.nr_nodes); 629b81a48eaSPetr Holasek return -1; 630b81a48eaSPetr Holasek } 631b81a48eaSPetr Holasek 632b81a48eaSPetr Holasek BUG_ON(bind_node_0 < 0 || bind_node_1 < 0); 6331c13f3c9SIngo Molnar BUG_ON(bind_node_0 > bind_node_1); 6341c13f3c9SIngo Molnar 6351c13f3c9SIngo Molnar for (bind_node = bind_node_0; bind_node <= bind_node_1; bind_node += step) { 6361c13f3c9SIngo Molnar int i; 6371c13f3c9SIngo Molnar 6381c13f3c9SIngo Molnar for (i = 0; i < mul; i++) { 6391c13f3c9SIngo Molnar if (t >= g->p.nr_tasks) { 6401c13f3c9SIngo Molnar printf("\n# NOTE: ignoring bind NODEs starting at NODE#%d\n", bind_node); 6411c13f3c9SIngo Molnar goto out; 6421c13f3c9SIngo Molnar } 6431c13f3c9SIngo Molnar td = g->threads + t; 6441c13f3c9SIngo Molnar 6451c13f3c9SIngo Molnar if (!t) 6461c13f3c9SIngo Molnar tprintf(" %2d", bind_node); 6471c13f3c9SIngo Molnar else 6481c13f3c9SIngo Molnar tprintf(",%2d", bind_node); 6491c13f3c9SIngo Molnar 6501c13f3c9SIngo Molnar td->bind_node = bind_node; 6511c13f3c9SIngo Molnar t++; 6521c13f3c9SIngo Molnar } 6531c13f3c9SIngo Molnar } 6541c13f3c9SIngo Molnar } 6551c13f3c9SIngo Molnar out: 6561c13f3c9SIngo Molnar 6571c13f3c9SIngo Molnar tprintf("\n"); 6581c13f3c9SIngo Molnar 6591c13f3c9SIngo Molnar if (t < g->p.nr_tasks) 6601c13f3c9SIngo Molnar printf("# NOTE: %d tasks mem-bound, %d tasks unbound\n", t, g->p.nr_tasks - t); 6611c13f3c9SIngo Molnar 6621c13f3c9SIngo Molnar free(str0); 663b81a48eaSPetr Holasek return 0; 6641c13f3c9SIngo Molnar } 6651c13f3c9SIngo Molnar 6661c13f3c9SIngo Molnar static int parse_nodes_opt(const struct option *opt __maybe_unused, 6671c13f3c9SIngo Molnar const char *arg, int unset __maybe_unused) 6681c13f3c9SIngo Molnar { 6691c13f3c9SIngo Molnar if (!arg) 6701c13f3c9SIngo Molnar return -1; 6711c13f3c9SIngo Molnar 6721c13f3c9SIngo Molnar return parse_node_list(arg); 6731c13f3c9SIngo Molnar 6741c13f3c9SIngo Molnar return 0; 6751c13f3c9SIngo Molnar } 6761c13f3c9SIngo Molnar 6771c13f3c9SIngo Molnar #define BIT(x) (1ul << x) 6781c13f3c9SIngo Molnar 6791c13f3c9SIngo Molnar static inline uint32_t lfsr_32(uint32_t lfsr) 6801c13f3c9SIngo Molnar { 6811c13f3c9SIngo Molnar const uint32_t taps = BIT(1) | BIT(5) | BIT(6) | BIT(31); 6821c13f3c9SIngo Molnar return (lfsr>>1) ^ ((0x0u - (lfsr & 0x1u)) & taps); 6831c13f3c9SIngo Molnar } 6841c13f3c9SIngo Molnar 6851c13f3c9SIngo Molnar /* 6861c13f3c9SIngo Molnar * Make sure there's real data dependency to RAM (when read 6871c13f3c9SIngo Molnar * accesses are enabled), so the compiler, the CPU and the 6881c13f3c9SIngo Molnar * kernel (KSM, zero page, etc.) cannot optimize away RAM 6891c13f3c9SIngo Molnar * accesses: 6901c13f3c9SIngo Molnar */ 6911c13f3c9SIngo Molnar static inline u64 access_data(u64 *data __attribute__((unused)), u64 val) 6921c13f3c9SIngo Molnar { 6931c13f3c9SIngo Molnar if (g->p.data_reads) 6941c13f3c9SIngo Molnar val += *data; 6951c13f3c9SIngo Molnar if (g->p.data_writes) 6961c13f3c9SIngo Molnar *data = val + 1; 6971c13f3c9SIngo Molnar return val; 6981c13f3c9SIngo Molnar } 6991c13f3c9SIngo Molnar 7001c13f3c9SIngo Molnar /* 7011c13f3c9SIngo Molnar * The worker process does two types of work, a forwards going 7021c13f3c9SIngo Molnar * loop and a backwards going loop. 7031c13f3c9SIngo Molnar * 7041c13f3c9SIngo Molnar * We do this so that on multiprocessor systems we do not create 7051c13f3c9SIngo Molnar * a 'train' of processing, with highly synchronized processes, 7061c13f3c9SIngo Molnar * skewing the whole benchmark. 7071c13f3c9SIngo Molnar */ 7081c13f3c9SIngo Molnar static u64 do_work(u8 *__data, long bytes, int nr, int nr_max, int loop, u64 val) 7091c13f3c9SIngo Molnar { 7101c13f3c9SIngo Molnar long words = bytes/sizeof(u64); 7111c13f3c9SIngo Molnar u64 *data = (void *)__data; 7121c13f3c9SIngo Molnar long chunk_0, chunk_1; 7131c13f3c9SIngo Molnar u64 *d0, *d, *d1; 7141c13f3c9SIngo Molnar long off; 7151c13f3c9SIngo Molnar long i; 7161c13f3c9SIngo Molnar 7171c13f3c9SIngo Molnar BUG_ON(!data && words); 7181c13f3c9SIngo Molnar BUG_ON(data && !words); 7191c13f3c9SIngo Molnar 7201c13f3c9SIngo Molnar if (!data) 7211c13f3c9SIngo Molnar return val; 7221c13f3c9SIngo Molnar 7231c13f3c9SIngo Molnar /* Very simple memset() work variant: */ 7241c13f3c9SIngo Molnar if (g->p.data_zero_memset && !g->p.data_rand_walk) { 7251c13f3c9SIngo Molnar bzero(data, bytes); 7261c13f3c9SIngo Molnar return val; 7271c13f3c9SIngo Molnar } 7281c13f3c9SIngo Molnar 7291c13f3c9SIngo Molnar /* Spread out by PID/TID nr and by loop nr: */ 7301c13f3c9SIngo Molnar chunk_0 = words/nr_max; 7311c13f3c9SIngo Molnar chunk_1 = words/g->p.nr_loops; 7321c13f3c9SIngo Molnar off = nr*chunk_0 + loop*chunk_1; 7331c13f3c9SIngo Molnar 7341c13f3c9SIngo Molnar while (off >= words) 7351c13f3c9SIngo Molnar off -= words; 7361c13f3c9SIngo Molnar 7371c13f3c9SIngo Molnar if (g->p.data_rand_walk) { 7381c13f3c9SIngo Molnar u32 lfsr = nr + loop + val; 7391c13f3c9SIngo Molnar int j; 7401c13f3c9SIngo Molnar 7411c13f3c9SIngo Molnar for (i = 0; i < words/1024; i++) { 7421c13f3c9SIngo Molnar long start, end; 7431c13f3c9SIngo Molnar 7441c13f3c9SIngo Molnar lfsr = lfsr_32(lfsr); 7451c13f3c9SIngo Molnar 7461c13f3c9SIngo Molnar start = lfsr % words; 7471c13f3c9SIngo Molnar end = min(start + 1024, words-1); 7481c13f3c9SIngo Molnar 7491c13f3c9SIngo Molnar if (g->p.data_zero_memset) { 7501c13f3c9SIngo Molnar bzero(data + start, (end-start) * sizeof(u64)); 7511c13f3c9SIngo Molnar } else { 7521c13f3c9SIngo Molnar for (j = start; j < end; j++) 7531c13f3c9SIngo Molnar val = access_data(data + j, val); 7541c13f3c9SIngo Molnar } 7551c13f3c9SIngo Molnar } 7561c13f3c9SIngo Molnar } else if (!g->p.data_backwards || (nr + loop) & 1) { 7571c13f3c9SIngo Molnar 7581c13f3c9SIngo Molnar d0 = data + off; 7591c13f3c9SIngo Molnar d = data + off + 1; 7601c13f3c9SIngo Molnar d1 = data + words; 7611c13f3c9SIngo Molnar 7621c13f3c9SIngo Molnar /* Process data forwards: */ 7631c13f3c9SIngo Molnar for (;;) { 7641c13f3c9SIngo Molnar if (unlikely(d >= d1)) 7651c13f3c9SIngo Molnar d = data; 7661c13f3c9SIngo Molnar if (unlikely(d == d0)) 7671c13f3c9SIngo Molnar break; 7681c13f3c9SIngo Molnar 7691c13f3c9SIngo Molnar val = access_data(d, val); 7701c13f3c9SIngo Molnar 7711c13f3c9SIngo Molnar d++; 7721c13f3c9SIngo Molnar } 7731c13f3c9SIngo Molnar } else { 7741c13f3c9SIngo Molnar /* Process data backwards: */ 7751c13f3c9SIngo Molnar 7761c13f3c9SIngo Molnar d0 = data + off; 7771c13f3c9SIngo Molnar d = data + off - 1; 7781c13f3c9SIngo Molnar d1 = data + words; 7791c13f3c9SIngo Molnar 7801c13f3c9SIngo Molnar /* Process data forwards: */ 7811c13f3c9SIngo Molnar for (;;) { 7821c13f3c9SIngo Molnar if (unlikely(d < data)) 7831c13f3c9SIngo Molnar d = data + words-1; 7841c13f3c9SIngo Molnar if (unlikely(d == d0)) 7851c13f3c9SIngo Molnar break; 7861c13f3c9SIngo Molnar 7871c13f3c9SIngo Molnar val = access_data(d, val); 7881c13f3c9SIngo Molnar 7891c13f3c9SIngo Molnar d--; 7901c13f3c9SIngo Molnar } 7911c13f3c9SIngo Molnar } 7921c13f3c9SIngo Molnar 7931c13f3c9SIngo Molnar return val; 7941c13f3c9SIngo Molnar } 7951c13f3c9SIngo Molnar 7961c13f3c9SIngo Molnar static void update_curr_cpu(int task_nr, unsigned long bytes_worked) 7971c13f3c9SIngo Molnar { 7981c13f3c9SIngo Molnar unsigned int cpu; 7991c13f3c9SIngo Molnar 8001c13f3c9SIngo Molnar cpu = sched_getcpu(); 8011c13f3c9SIngo Molnar 8021c13f3c9SIngo Molnar g->threads[task_nr].curr_cpu = cpu; 8031c13f3c9SIngo Molnar prctl(0, bytes_worked); 8041c13f3c9SIngo Molnar } 8051c13f3c9SIngo Molnar 8061c13f3c9SIngo Molnar #define MAX_NR_NODES 64 8071c13f3c9SIngo Molnar 8081c13f3c9SIngo Molnar /* 8091c13f3c9SIngo Molnar * Count the number of nodes a process's threads 8101c13f3c9SIngo Molnar * are spread out on. 8111c13f3c9SIngo Molnar * 8121c13f3c9SIngo Molnar * A count of 1 means that the process is compressed 8131c13f3c9SIngo Molnar * to a single node. A count of g->p.nr_nodes means it's 8141c13f3c9SIngo Molnar * spread out on the whole system. 8151c13f3c9SIngo Molnar */ 8161c13f3c9SIngo Molnar static int count_process_nodes(int process_nr) 8171c13f3c9SIngo Molnar { 8181c13f3c9SIngo Molnar char node_present[MAX_NR_NODES] = { 0, }; 8191c13f3c9SIngo Molnar int nodes; 8201c13f3c9SIngo Molnar int n, t; 8211c13f3c9SIngo Molnar 8221c13f3c9SIngo Molnar for (t = 0; t < g->p.nr_threads; t++) { 8231c13f3c9SIngo Molnar struct thread_data *td; 8241c13f3c9SIngo Molnar int task_nr; 8251c13f3c9SIngo Molnar int node; 8261c13f3c9SIngo Molnar 8271c13f3c9SIngo Molnar task_nr = process_nr*g->p.nr_threads + t; 8281c13f3c9SIngo Molnar td = g->threads + task_nr; 8291c13f3c9SIngo Molnar 8301c13f3c9SIngo Molnar node = numa_node_of_cpu(td->curr_cpu); 8311c13f3c9SIngo Molnar node_present[node] = 1; 8321c13f3c9SIngo Molnar } 8331c13f3c9SIngo Molnar 8341c13f3c9SIngo Molnar nodes = 0; 8351c13f3c9SIngo Molnar 8361c13f3c9SIngo Molnar for (n = 0; n < MAX_NR_NODES; n++) 8371c13f3c9SIngo Molnar nodes += node_present[n]; 8381c13f3c9SIngo Molnar 8391c13f3c9SIngo Molnar return nodes; 8401c13f3c9SIngo Molnar } 8411c13f3c9SIngo Molnar 8421c13f3c9SIngo Molnar /* 8431c13f3c9SIngo Molnar * Count the number of distinct process-threads a node contains. 8441c13f3c9SIngo Molnar * 8451c13f3c9SIngo Molnar * A count of 1 means that the node contains only a single 8461c13f3c9SIngo Molnar * process. If all nodes on the system contain at most one 8471c13f3c9SIngo Molnar * process then we are well-converged. 8481c13f3c9SIngo Molnar */ 8491c13f3c9SIngo Molnar static int count_node_processes(int node) 8501c13f3c9SIngo Molnar { 8511c13f3c9SIngo Molnar int processes = 0; 8521c13f3c9SIngo Molnar int t, p; 8531c13f3c9SIngo Molnar 8541c13f3c9SIngo Molnar for (p = 0; p < g->p.nr_proc; p++) { 8551c13f3c9SIngo Molnar for (t = 0; t < g->p.nr_threads; t++) { 8561c13f3c9SIngo Molnar struct thread_data *td; 8571c13f3c9SIngo Molnar int task_nr; 8581c13f3c9SIngo Molnar int n; 8591c13f3c9SIngo Molnar 8601c13f3c9SIngo Molnar task_nr = p*g->p.nr_threads + t; 8611c13f3c9SIngo Molnar td = g->threads + task_nr; 8621c13f3c9SIngo Molnar 8631c13f3c9SIngo Molnar n = numa_node_of_cpu(td->curr_cpu); 8641c13f3c9SIngo Molnar if (n == node) { 8651c13f3c9SIngo Molnar processes++; 8661c13f3c9SIngo Molnar break; 8671c13f3c9SIngo Molnar } 8681c13f3c9SIngo Molnar } 8691c13f3c9SIngo Molnar } 8701c13f3c9SIngo Molnar 8711c13f3c9SIngo Molnar return processes; 8721c13f3c9SIngo Molnar } 8731c13f3c9SIngo Molnar 8741c13f3c9SIngo Molnar static void calc_convergence_compression(int *strong) 8751c13f3c9SIngo Molnar { 8761c13f3c9SIngo Molnar unsigned int nodes_min, nodes_max; 8771c13f3c9SIngo Molnar int p; 8781c13f3c9SIngo Molnar 8791c13f3c9SIngo Molnar nodes_min = -1; 8801c13f3c9SIngo Molnar nodes_max = 0; 8811c13f3c9SIngo Molnar 8821c13f3c9SIngo Molnar for (p = 0; p < g->p.nr_proc; p++) { 8831c13f3c9SIngo Molnar unsigned int nodes = count_process_nodes(p); 8841c13f3c9SIngo Molnar 8851c13f3c9SIngo Molnar nodes_min = min(nodes, nodes_min); 8861c13f3c9SIngo Molnar nodes_max = max(nodes, nodes_max); 8871c13f3c9SIngo Molnar } 8881c13f3c9SIngo Molnar 8891c13f3c9SIngo Molnar /* Strong convergence: all threads compress on a single node: */ 8901c13f3c9SIngo Molnar if (nodes_min == 1 && nodes_max == 1) { 8911c13f3c9SIngo Molnar *strong = 1; 8921c13f3c9SIngo Molnar } else { 8931c13f3c9SIngo Molnar *strong = 0; 8941c13f3c9SIngo Molnar tprintf(" {%d-%d}", nodes_min, nodes_max); 8951c13f3c9SIngo Molnar } 8961c13f3c9SIngo Molnar } 8971c13f3c9SIngo Molnar 8981c13f3c9SIngo Molnar static void calc_convergence(double runtime_ns_max, double *convergence) 8991c13f3c9SIngo Molnar { 9001c13f3c9SIngo Molnar unsigned int loops_done_min, loops_done_max; 9011c13f3c9SIngo Molnar int process_groups; 9021c13f3c9SIngo Molnar int nodes[MAX_NR_NODES]; 9031c13f3c9SIngo Molnar int distance; 9041c13f3c9SIngo Molnar int nr_min; 9051c13f3c9SIngo Molnar int nr_max; 9061c13f3c9SIngo Molnar int strong; 9071c13f3c9SIngo Molnar int sum; 9081c13f3c9SIngo Molnar int nr; 9091c13f3c9SIngo Molnar int node; 9101c13f3c9SIngo Molnar int cpu; 9111c13f3c9SIngo Molnar int t; 9121c13f3c9SIngo Molnar 9131c13f3c9SIngo Molnar if (!g->p.show_convergence && !g->p.measure_convergence) 9141c13f3c9SIngo Molnar return; 9151c13f3c9SIngo Molnar 9161c13f3c9SIngo Molnar for (node = 0; node < g->p.nr_nodes; node++) 9171c13f3c9SIngo Molnar nodes[node] = 0; 9181c13f3c9SIngo Molnar 9191c13f3c9SIngo Molnar loops_done_min = -1; 9201c13f3c9SIngo Molnar loops_done_max = 0; 9211c13f3c9SIngo Molnar 9221c13f3c9SIngo Molnar for (t = 0; t < g->p.nr_tasks; t++) { 9231c13f3c9SIngo Molnar struct thread_data *td = g->threads + t; 9241c13f3c9SIngo Molnar unsigned int loops_done; 9251c13f3c9SIngo Molnar 9261c13f3c9SIngo Molnar cpu = td->curr_cpu; 9271c13f3c9SIngo Molnar 9281c13f3c9SIngo Molnar /* Not all threads have written it yet: */ 9291c13f3c9SIngo Molnar if (cpu < 0) 9301c13f3c9SIngo Molnar continue; 9311c13f3c9SIngo Molnar 9321c13f3c9SIngo Molnar node = numa_node_of_cpu(cpu); 9331c13f3c9SIngo Molnar 9341c13f3c9SIngo Molnar nodes[node]++; 9351c13f3c9SIngo Molnar 9361c13f3c9SIngo Molnar loops_done = td->loops_done; 9371c13f3c9SIngo Molnar loops_done_min = min(loops_done, loops_done_min); 9381c13f3c9SIngo Molnar loops_done_max = max(loops_done, loops_done_max); 9391c13f3c9SIngo Molnar } 9401c13f3c9SIngo Molnar 9411c13f3c9SIngo Molnar nr_max = 0; 9421c13f3c9SIngo Molnar nr_min = g->p.nr_tasks; 9431c13f3c9SIngo Molnar sum = 0; 9441c13f3c9SIngo Molnar 9451c13f3c9SIngo Molnar for (node = 0; node < g->p.nr_nodes; node++) { 9461c13f3c9SIngo Molnar nr = nodes[node]; 9471c13f3c9SIngo Molnar nr_min = min(nr, nr_min); 9481c13f3c9SIngo Molnar nr_max = max(nr, nr_max); 9491c13f3c9SIngo Molnar sum += nr; 9501c13f3c9SIngo Molnar } 9511c13f3c9SIngo Molnar BUG_ON(nr_min > nr_max); 9521c13f3c9SIngo Molnar 9531c13f3c9SIngo Molnar BUG_ON(sum > g->p.nr_tasks); 9541c13f3c9SIngo Molnar 9551c13f3c9SIngo Molnar if (0 && (sum < g->p.nr_tasks)) 9561c13f3c9SIngo Molnar return; 9571c13f3c9SIngo Molnar 9581c13f3c9SIngo Molnar /* 9591c13f3c9SIngo Molnar * Count the number of distinct process groups present 9601c13f3c9SIngo Molnar * on nodes - when we are converged this will decrease 9611c13f3c9SIngo Molnar * to g->p.nr_proc: 9621c13f3c9SIngo Molnar */ 9631c13f3c9SIngo Molnar process_groups = 0; 9641c13f3c9SIngo Molnar 9651c13f3c9SIngo Molnar for (node = 0; node < g->p.nr_nodes; node++) { 9661c13f3c9SIngo Molnar int processes = count_node_processes(node); 9671c13f3c9SIngo Molnar 9681c13f3c9SIngo Molnar nr = nodes[node]; 9691c13f3c9SIngo Molnar tprintf(" %2d/%-2d", nr, processes); 9701c13f3c9SIngo Molnar 9711c13f3c9SIngo Molnar process_groups += processes; 9721c13f3c9SIngo Molnar } 9731c13f3c9SIngo Molnar 9741c13f3c9SIngo Molnar distance = nr_max - nr_min; 9751c13f3c9SIngo Molnar 9761c13f3c9SIngo Molnar tprintf(" [%2d/%-2d]", distance, process_groups); 9771c13f3c9SIngo Molnar 9781c13f3c9SIngo Molnar tprintf(" l:%3d-%-3d (%3d)", 9791c13f3c9SIngo Molnar loops_done_min, loops_done_max, loops_done_max-loops_done_min); 9801c13f3c9SIngo Molnar 9811c13f3c9SIngo Molnar if (loops_done_min && loops_done_max) { 9821c13f3c9SIngo Molnar double skew = 1.0 - (double)loops_done_min/loops_done_max; 9831c13f3c9SIngo Molnar 9841c13f3c9SIngo Molnar tprintf(" [%4.1f%%]", skew * 100.0); 9851c13f3c9SIngo Molnar } 9861c13f3c9SIngo Molnar 9871c13f3c9SIngo Molnar calc_convergence_compression(&strong); 9881c13f3c9SIngo Molnar 9891c13f3c9SIngo Molnar if (strong && process_groups == g->p.nr_proc) { 9901c13f3c9SIngo Molnar if (!*convergence) { 9911c13f3c9SIngo Molnar *convergence = runtime_ns_max; 9921c13f3c9SIngo Molnar tprintf(" (%6.1fs converged)\n", *convergence/1e9); 9931c13f3c9SIngo Molnar if (g->p.measure_convergence) { 9941c13f3c9SIngo Molnar g->all_converged = true; 9951c13f3c9SIngo Molnar g->stop_work = true; 9961c13f3c9SIngo Molnar } 9971c13f3c9SIngo Molnar } 9981c13f3c9SIngo Molnar } else { 9991c13f3c9SIngo Molnar if (*convergence) { 10001c13f3c9SIngo Molnar tprintf(" (%6.1fs de-converged)", runtime_ns_max/1e9); 10011c13f3c9SIngo Molnar *convergence = 0; 10021c13f3c9SIngo Molnar } 10031c13f3c9SIngo Molnar tprintf("\n"); 10041c13f3c9SIngo Molnar } 10051c13f3c9SIngo Molnar } 10061c13f3c9SIngo Molnar 10071c13f3c9SIngo Molnar static void show_summary(double runtime_ns_max, int l, double *convergence) 10081c13f3c9SIngo Molnar { 10091c13f3c9SIngo Molnar tprintf("\r # %5.1f%% [%.1f mins]", 10101c13f3c9SIngo Molnar (double)(l+1)/g->p.nr_loops*100.0, runtime_ns_max/1e9 / 60.0); 10111c13f3c9SIngo Molnar 10121c13f3c9SIngo Molnar calc_convergence(runtime_ns_max, convergence); 10131c13f3c9SIngo Molnar 10141c13f3c9SIngo Molnar if (g->p.show_details >= 0) 10151c13f3c9SIngo Molnar fflush(stdout); 10161c13f3c9SIngo Molnar } 10171c13f3c9SIngo Molnar 10181c13f3c9SIngo Molnar static void *worker_thread(void *__tdata) 10191c13f3c9SIngo Molnar { 10201c13f3c9SIngo Molnar struct thread_data *td = __tdata; 10211c13f3c9SIngo Molnar struct timeval start0, start, stop, diff; 10221c13f3c9SIngo Molnar int process_nr = td->process_nr; 10231c13f3c9SIngo Molnar int thread_nr = td->thread_nr; 10241c13f3c9SIngo Molnar unsigned long last_perturbance; 10251c13f3c9SIngo Molnar int task_nr = td->task_nr; 10261c13f3c9SIngo Molnar int details = g->p.show_details; 10271c13f3c9SIngo Molnar int first_task, last_task; 10281c13f3c9SIngo Molnar double convergence = 0; 10291c13f3c9SIngo Molnar u64 val = td->val; 10301c13f3c9SIngo Molnar double runtime_ns_max; 10311c13f3c9SIngo Molnar u8 *global_data; 10321c13f3c9SIngo Molnar u8 *process_data; 10331c13f3c9SIngo Molnar u8 *thread_data; 10341c13f3c9SIngo Molnar u64 bytes_done; 10351c13f3c9SIngo Molnar long work_done; 10361c13f3c9SIngo Molnar u32 l; 10371c13f3c9SIngo Molnar 10381c13f3c9SIngo Molnar bind_to_cpumask(td->bind_cpumask); 10391c13f3c9SIngo Molnar bind_to_memnode(td->bind_node); 10401c13f3c9SIngo Molnar 10411c13f3c9SIngo Molnar set_taskname("thread %d/%d", process_nr, thread_nr); 10421c13f3c9SIngo Molnar 10431c13f3c9SIngo Molnar global_data = g->data; 10441c13f3c9SIngo Molnar process_data = td->process_data; 10451c13f3c9SIngo Molnar thread_data = setup_private_data(g->p.bytes_thread); 10461c13f3c9SIngo Molnar 10471c13f3c9SIngo Molnar bytes_done = 0; 10481c13f3c9SIngo Molnar 10491c13f3c9SIngo Molnar last_task = 0; 10501c13f3c9SIngo Molnar if (process_nr == g->p.nr_proc-1 && thread_nr == g->p.nr_threads-1) 10511c13f3c9SIngo Molnar last_task = 1; 10521c13f3c9SIngo Molnar 10531c13f3c9SIngo Molnar first_task = 0; 10541c13f3c9SIngo Molnar if (process_nr == 0 && thread_nr == 0) 10551c13f3c9SIngo Molnar first_task = 1; 10561c13f3c9SIngo Molnar 10571c13f3c9SIngo Molnar if (details >= 2) { 10581c13f3c9SIngo Molnar printf("# thread %2d / %2d global mem: %p, process mem: %p, thread mem: %p\n", 10591c13f3c9SIngo Molnar process_nr, thread_nr, global_data, process_data, thread_data); 10601c13f3c9SIngo Molnar } 10611c13f3c9SIngo Molnar 10621c13f3c9SIngo Molnar if (g->p.serialize_startup) { 10631c13f3c9SIngo Molnar pthread_mutex_lock(&g->startup_mutex); 10641c13f3c9SIngo Molnar g->nr_tasks_started++; 10651c13f3c9SIngo Molnar pthread_mutex_unlock(&g->startup_mutex); 10661c13f3c9SIngo Molnar 10671c13f3c9SIngo Molnar /* Here we will wait for the main process to start us all at once: */ 10681c13f3c9SIngo Molnar pthread_mutex_lock(&g->start_work_mutex); 10691c13f3c9SIngo Molnar g->nr_tasks_working++; 10701c13f3c9SIngo Molnar 10711c13f3c9SIngo Molnar /* Last one wake the main process: */ 10721c13f3c9SIngo Molnar if (g->nr_tasks_working == g->p.nr_tasks) 10731c13f3c9SIngo Molnar pthread_mutex_unlock(&g->startup_done_mutex); 10741c13f3c9SIngo Molnar 10751c13f3c9SIngo Molnar pthread_mutex_unlock(&g->start_work_mutex); 10761c13f3c9SIngo Molnar } 10771c13f3c9SIngo Molnar 10781c13f3c9SIngo Molnar gettimeofday(&start0, NULL); 10791c13f3c9SIngo Molnar 10801c13f3c9SIngo Molnar start = stop = start0; 10811c13f3c9SIngo Molnar last_perturbance = start.tv_sec; 10821c13f3c9SIngo Molnar 10831c13f3c9SIngo Molnar for (l = 0; l < g->p.nr_loops; l++) { 10841c13f3c9SIngo Molnar start = stop; 10851c13f3c9SIngo Molnar 10861c13f3c9SIngo Molnar if (g->stop_work) 10871c13f3c9SIngo Molnar break; 10881c13f3c9SIngo Molnar 10891c13f3c9SIngo Molnar val += do_work(global_data, g->p.bytes_global, process_nr, g->p.nr_proc, l, val); 10901c13f3c9SIngo Molnar val += do_work(process_data, g->p.bytes_process, thread_nr, g->p.nr_threads, l, val); 10911c13f3c9SIngo Molnar val += do_work(thread_data, g->p.bytes_thread, 0, 1, l, val); 10921c13f3c9SIngo Molnar 10931c13f3c9SIngo Molnar if (g->p.sleep_usecs) { 10941c13f3c9SIngo Molnar pthread_mutex_lock(td->process_lock); 10951c13f3c9SIngo Molnar usleep(g->p.sleep_usecs); 10961c13f3c9SIngo Molnar pthread_mutex_unlock(td->process_lock); 10971c13f3c9SIngo Molnar } 10981c13f3c9SIngo Molnar /* 10991c13f3c9SIngo Molnar * Amount of work to be done under a process-global lock: 11001c13f3c9SIngo Molnar */ 11011c13f3c9SIngo Molnar if (g->p.bytes_process_locked) { 11021c13f3c9SIngo Molnar pthread_mutex_lock(td->process_lock); 11031c13f3c9SIngo Molnar val += do_work(process_data, g->p.bytes_process_locked, thread_nr, g->p.nr_threads, l, val); 11041c13f3c9SIngo Molnar pthread_mutex_unlock(td->process_lock); 11051c13f3c9SIngo Molnar } 11061c13f3c9SIngo Molnar 11071c13f3c9SIngo Molnar work_done = g->p.bytes_global + g->p.bytes_process + 11081c13f3c9SIngo Molnar g->p.bytes_process_locked + g->p.bytes_thread; 11091c13f3c9SIngo Molnar 11101c13f3c9SIngo Molnar update_curr_cpu(task_nr, work_done); 11111c13f3c9SIngo Molnar bytes_done += work_done; 11121c13f3c9SIngo Molnar 11131c13f3c9SIngo Molnar if (details < 0 && !g->p.perturb_secs && !g->p.measure_convergence && !g->p.nr_secs) 11141c13f3c9SIngo Molnar continue; 11151c13f3c9SIngo Molnar 11161c13f3c9SIngo Molnar td->loops_done = l; 11171c13f3c9SIngo Molnar 11181c13f3c9SIngo Molnar gettimeofday(&stop, NULL); 11191c13f3c9SIngo Molnar 11201c13f3c9SIngo Molnar /* Check whether our max runtime timed out: */ 11211c13f3c9SIngo Molnar if (g->p.nr_secs) { 11221c13f3c9SIngo Molnar timersub(&stop, &start0, &diff); 11232100f778SAdrian Hunter if ((u32)diff.tv_sec >= g->p.nr_secs) { 11241c13f3c9SIngo Molnar g->stop_work = true; 11251c13f3c9SIngo Molnar break; 11261c13f3c9SIngo Molnar } 11271c13f3c9SIngo Molnar } 11281c13f3c9SIngo Molnar 11291c13f3c9SIngo Molnar /* Update the summary at most once per second: */ 11301c13f3c9SIngo Molnar if (start.tv_sec == stop.tv_sec) 11311c13f3c9SIngo Molnar continue; 11321c13f3c9SIngo Molnar 11331c13f3c9SIngo Molnar /* 11341c13f3c9SIngo Molnar * Perturb the first task's equilibrium every g->p.perturb_secs seconds, 11351c13f3c9SIngo Molnar * by migrating to CPU#0: 11361c13f3c9SIngo Molnar */ 11371c13f3c9SIngo Molnar if (first_task && g->p.perturb_secs && (int)(stop.tv_sec - last_perturbance) >= g->p.perturb_secs) { 11381c13f3c9SIngo Molnar cpu_set_t orig_mask; 11391c13f3c9SIngo Molnar int target_cpu; 11401c13f3c9SIngo Molnar int this_cpu; 11411c13f3c9SIngo Molnar 11421c13f3c9SIngo Molnar last_perturbance = stop.tv_sec; 11431c13f3c9SIngo Molnar 11441c13f3c9SIngo Molnar /* 11451c13f3c9SIngo Molnar * Depending on where we are running, move into 11461c13f3c9SIngo Molnar * the other half of the system, to create some 11471c13f3c9SIngo Molnar * real disturbance: 11481c13f3c9SIngo Molnar */ 11491c13f3c9SIngo Molnar this_cpu = g->threads[task_nr].curr_cpu; 11501c13f3c9SIngo Molnar if (this_cpu < g->p.nr_cpus/2) 11511c13f3c9SIngo Molnar target_cpu = g->p.nr_cpus-1; 11521c13f3c9SIngo Molnar else 11531c13f3c9SIngo Molnar target_cpu = 0; 11541c13f3c9SIngo Molnar 11551c13f3c9SIngo Molnar orig_mask = bind_to_cpu(target_cpu); 11561c13f3c9SIngo Molnar 11571c13f3c9SIngo Molnar /* Here we are running on the target CPU already */ 11581c13f3c9SIngo Molnar if (details >= 1) 11591c13f3c9SIngo Molnar printf(" (injecting perturbalance, moved to CPU#%d)\n", target_cpu); 11601c13f3c9SIngo Molnar 11611c13f3c9SIngo Molnar bind_to_cpumask(orig_mask); 11621c13f3c9SIngo Molnar } 11631c13f3c9SIngo Molnar 11641c13f3c9SIngo Molnar if (details >= 3) { 11651c13f3c9SIngo Molnar timersub(&stop, &start, &diff); 11661c13f3c9SIngo Molnar runtime_ns_max = diff.tv_sec * 1000000000; 11671c13f3c9SIngo Molnar runtime_ns_max += diff.tv_usec * 1000; 11681c13f3c9SIngo Molnar 11691c13f3c9SIngo Molnar if (details >= 0) { 11702100f778SAdrian Hunter printf(" #%2d / %2d: %14.2lf nsecs/op [val: %016"PRIx64"]\n", 11711c13f3c9SIngo Molnar process_nr, thread_nr, runtime_ns_max / bytes_done, val); 11721c13f3c9SIngo Molnar } 11731c13f3c9SIngo Molnar fflush(stdout); 11741c13f3c9SIngo Molnar } 11751c13f3c9SIngo Molnar if (!last_task) 11761c13f3c9SIngo Molnar continue; 11771c13f3c9SIngo Molnar 11781c13f3c9SIngo Molnar timersub(&stop, &start0, &diff); 11791c13f3c9SIngo Molnar runtime_ns_max = diff.tv_sec * 1000000000ULL; 11801c13f3c9SIngo Molnar runtime_ns_max += diff.tv_usec * 1000ULL; 11811c13f3c9SIngo Molnar 11821c13f3c9SIngo Molnar show_summary(runtime_ns_max, l, &convergence); 11831c13f3c9SIngo Molnar } 11841c13f3c9SIngo Molnar 11851c13f3c9SIngo Molnar gettimeofday(&stop, NULL); 11861c13f3c9SIngo Molnar timersub(&stop, &start0, &diff); 11871c13f3c9SIngo Molnar td->runtime_ns = diff.tv_sec * 1000000000ULL; 11881c13f3c9SIngo Molnar td->runtime_ns += diff.tv_usec * 1000ULL; 11891c13f3c9SIngo Molnar 11901c13f3c9SIngo Molnar free_data(thread_data, g->p.bytes_thread); 11911c13f3c9SIngo Molnar 11921c13f3c9SIngo Molnar pthread_mutex_lock(&g->stop_work_mutex); 11931c13f3c9SIngo Molnar g->bytes_done += bytes_done; 11941c13f3c9SIngo Molnar pthread_mutex_unlock(&g->stop_work_mutex); 11951c13f3c9SIngo Molnar 11961c13f3c9SIngo Molnar return NULL; 11971c13f3c9SIngo Molnar } 11981c13f3c9SIngo Molnar 11991c13f3c9SIngo Molnar /* 12001c13f3c9SIngo Molnar * A worker process starts a couple of threads: 12011c13f3c9SIngo Molnar */ 12021c13f3c9SIngo Molnar static void worker_process(int process_nr) 12031c13f3c9SIngo Molnar { 12041c13f3c9SIngo Molnar pthread_mutex_t process_lock; 12051c13f3c9SIngo Molnar struct thread_data *td; 12061c13f3c9SIngo Molnar pthread_t *pthreads; 12071c13f3c9SIngo Molnar u8 *process_data; 12081c13f3c9SIngo Molnar int task_nr; 12091c13f3c9SIngo Molnar int ret; 12101c13f3c9SIngo Molnar int t; 12111c13f3c9SIngo Molnar 12121c13f3c9SIngo Molnar pthread_mutex_init(&process_lock, NULL); 12131c13f3c9SIngo Molnar set_taskname("process %d", process_nr); 12141c13f3c9SIngo Molnar 12151c13f3c9SIngo Molnar /* 12161c13f3c9SIngo Molnar * Pick up the memory policy and the CPU binding of our first thread, 12171c13f3c9SIngo Molnar * so that we initialize memory accordingly: 12181c13f3c9SIngo Molnar */ 12191c13f3c9SIngo Molnar task_nr = process_nr*g->p.nr_threads; 12201c13f3c9SIngo Molnar td = g->threads + task_nr; 12211c13f3c9SIngo Molnar 12221c13f3c9SIngo Molnar bind_to_memnode(td->bind_node); 12231c13f3c9SIngo Molnar bind_to_cpumask(td->bind_cpumask); 12241c13f3c9SIngo Molnar 12251c13f3c9SIngo Molnar pthreads = zalloc(g->p.nr_threads * sizeof(pthread_t)); 12261c13f3c9SIngo Molnar process_data = setup_private_data(g->p.bytes_process); 12271c13f3c9SIngo Molnar 12281c13f3c9SIngo Molnar if (g->p.show_details >= 3) { 12291c13f3c9SIngo Molnar printf(" # process %2d global mem: %p, process mem: %p\n", 12301c13f3c9SIngo Molnar process_nr, g->data, process_data); 12311c13f3c9SIngo Molnar } 12321c13f3c9SIngo Molnar 12331c13f3c9SIngo Molnar for (t = 0; t < g->p.nr_threads; t++) { 12341c13f3c9SIngo Molnar task_nr = process_nr*g->p.nr_threads + t; 12351c13f3c9SIngo Molnar td = g->threads + task_nr; 12361c13f3c9SIngo Molnar 12371c13f3c9SIngo Molnar td->process_data = process_data; 12381c13f3c9SIngo Molnar td->process_nr = process_nr; 12391c13f3c9SIngo Molnar td->thread_nr = t; 12401c13f3c9SIngo Molnar td->task_nr = task_nr; 12411c13f3c9SIngo Molnar td->val = rand(); 12421c13f3c9SIngo Molnar td->curr_cpu = -1; 12431c13f3c9SIngo Molnar td->process_lock = &process_lock; 12441c13f3c9SIngo Molnar 12451c13f3c9SIngo Molnar ret = pthread_create(pthreads + t, NULL, worker_thread, td); 12461c13f3c9SIngo Molnar BUG_ON(ret); 12471c13f3c9SIngo Molnar } 12481c13f3c9SIngo Molnar 12491c13f3c9SIngo Molnar for (t = 0; t < g->p.nr_threads; t++) { 12501c13f3c9SIngo Molnar ret = pthread_join(pthreads[t], NULL); 12511c13f3c9SIngo Molnar BUG_ON(ret); 12521c13f3c9SIngo Molnar } 12531c13f3c9SIngo Molnar 12541c13f3c9SIngo Molnar free_data(process_data, g->p.bytes_process); 12551c13f3c9SIngo Molnar free(pthreads); 12561c13f3c9SIngo Molnar } 12571c13f3c9SIngo Molnar 12581c13f3c9SIngo Molnar static void print_summary(void) 12591c13f3c9SIngo Molnar { 12601c13f3c9SIngo Molnar if (g->p.show_details < 0) 12611c13f3c9SIngo Molnar return; 12621c13f3c9SIngo Molnar 12631c13f3c9SIngo Molnar printf("\n ###\n"); 12641c13f3c9SIngo Molnar printf(" # %d %s will execute (on %d nodes, %d CPUs):\n", 12651c13f3c9SIngo Molnar g->p.nr_tasks, g->p.nr_tasks == 1 ? "task" : "tasks", g->p.nr_nodes, g->p.nr_cpus); 12661c13f3c9SIngo Molnar printf(" # %5dx %5ldMB global shared mem operations\n", 12671c13f3c9SIngo Molnar g->p.nr_loops, g->p.bytes_global/1024/1024); 12681c13f3c9SIngo Molnar printf(" # %5dx %5ldMB process shared mem operations\n", 12691c13f3c9SIngo Molnar g->p.nr_loops, g->p.bytes_process/1024/1024); 12701c13f3c9SIngo Molnar printf(" # %5dx %5ldMB thread local mem operations\n", 12711c13f3c9SIngo Molnar g->p.nr_loops, g->p.bytes_thread/1024/1024); 12721c13f3c9SIngo Molnar 12731c13f3c9SIngo Molnar printf(" ###\n"); 12741c13f3c9SIngo Molnar 12751c13f3c9SIngo Molnar printf("\n ###\n"); fflush(stdout); 12761c13f3c9SIngo Molnar } 12771c13f3c9SIngo Molnar 12781c13f3c9SIngo Molnar static void init_thread_data(void) 12791c13f3c9SIngo Molnar { 12801c13f3c9SIngo Molnar ssize_t size = sizeof(*g->threads)*g->p.nr_tasks; 12811c13f3c9SIngo Molnar int t; 12821c13f3c9SIngo Molnar 12831c13f3c9SIngo Molnar g->threads = zalloc_shared_data(size); 12841c13f3c9SIngo Molnar 12851c13f3c9SIngo Molnar for (t = 0; t < g->p.nr_tasks; t++) { 12861c13f3c9SIngo Molnar struct thread_data *td = g->threads + t; 12871c13f3c9SIngo Molnar int cpu; 12881c13f3c9SIngo Molnar 12891c13f3c9SIngo Molnar /* Allow all nodes by default: */ 12901c13f3c9SIngo Molnar td->bind_node = -1; 12911c13f3c9SIngo Molnar 12921c13f3c9SIngo Molnar /* Allow all CPUs by default: */ 12931c13f3c9SIngo Molnar CPU_ZERO(&td->bind_cpumask); 12941c13f3c9SIngo Molnar for (cpu = 0; cpu < g->p.nr_cpus; cpu++) 12951c13f3c9SIngo Molnar CPU_SET(cpu, &td->bind_cpumask); 12961c13f3c9SIngo Molnar } 12971c13f3c9SIngo Molnar } 12981c13f3c9SIngo Molnar 12991c13f3c9SIngo Molnar static void deinit_thread_data(void) 13001c13f3c9SIngo Molnar { 13011c13f3c9SIngo Molnar ssize_t size = sizeof(*g->threads)*g->p.nr_tasks; 13021c13f3c9SIngo Molnar 13031c13f3c9SIngo Molnar free_data(g->threads, size); 13041c13f3c9SIngo Molnar } 13051c13f3c9SIngo Molnar 13061c13f3c9SIngo Molnar static int init(void) 13071c13f3c9SIngo Molnar { 13081c13f3c9SIngo Molnar g = (void *)alloc_data(sizeof(*g), MAP_SHARED, 1, 0, 0 /* THP */, 0); 13091c13f3c9SIngo Molnar 13101c13f3c9SIngo Molnar /* Copy over options: */ 13111c13f3c9SIngo Molnar g->p = p0; 13121c13f3c9SIngo Molnar 13131c13f3c9SIngo Molnar g->p.nr_cpus = numa_num_configured_cpus(); 13141c13f3c9SIngo Molnar 13151c13f3c9SIngo Molnar g->p.nr_nodes = numa_max_node() + 1; 13161c13f3c9SIngo Molnar 13171c13f3c9SIngo Molnar /* char array in count_process_nodes(): */ 13181c13f3c9SIngo Molnar BUG_ON(g->p.nr_nodes > MAX_NR_NODES || g->p.nr_nodes < 0); 13191c13f3c9SIngo Molnar 13201c13f3c9SIngo Molnar if (g->p.show_quiet && !g->p.show_details) 13211c13f3c9SIngo Molnar g->p.show_details = -1; 13221c13f3c9SIngo Molnar 13231c13f3c9SIngo Molnar /* Some memory should be specified: */ 13241c13f3c9SIngo Molnar if (!g->p.mb_global_str && !g->p.mb_proc_str && !g->p.mb_thread_str) 13251c13f3c9SIngo Molnar return -1; 13261c13f3c9SIngo Molnar 13271c13f3c9SIngo Molnar if (g->p.mb_global_str) { 13281c13f3c9SIngo Molnar g->p.mb_global = atof(g->p.mb_global_str); 13291c13f3c9SIngo Molnar BUG_ON(g->p.mb_global < 0); 13301c13f3c9SIngo Molnar } 13311c13f3c9SIngo Molnar 13321c13f3c9SIngo Molnar if (g->p.mb_proc_str) { 13331c13f3c9SIngo Molnar g->p.mb_proc = atof(g->p.mb_proc_str); 13341c13f3c9SIngo Molnar BUG_ON(g->p.mb_proc < 0); 13351c13f3c9SIngo Molnar } 13361c13f3c9SIngo Molnar 13371c13f3c9SIngo Molnar if (g->p.mb_proc_locked_str) { 13381c13f3c9SIngo Molnar g->p.mb_proc_locked = atof(g->p.mb_proc_locked_str); 13391c13f3c9SIngo Molnar BUG_ON(g->p.mb_proc_locked < 0); 13401c13f3c9SIngo Molnar BUG_ON(g->p.mb_proc_locked > g->p.mb_proc); 13411c13f3c9SIngo Molnar } 13421c13f3c9SIngo Molnar 13431c13f3c9SIngo Molnar if (g->p.mb_thread_str) { 13441c13f3c9SIngo Molnar g->p.mb_thread = atof(g->p.mb_thread_str); 13451c13f3c9SIngo Molnar BUG_ON(g->p.mb_thread < 0); 13461c13f3c9SIngo Molnar } 13471c13f3c9SIngo Molnar 13481c13f3c9SIngo Molnar BUG_ON(g->p.nr_threads <= 0); 13491c13f3c9SIngo Molnar BUG_ON(g->p.nr_proc <= 0); 13501c13f3c9SIngo Molnar 13511c13f3c9SIngo Molnar g->p.nr_tasks = g->p.nr_proc*g->p.nr_threads; 13521c13f3c9SIngo Molnar 13531c13f3c9SIngo Molnar g->p.bytes_global = g->p.mb_global *1024L*1024L; 13541c13f3c9SIngo Molnar g->p.bytes_process = g->p.mb_proc *1024L*1024L; 13551c13f3c9SIngo Molnar g->p.bytes_process_locked = g->p.mb_proc_locked *1024L*1024L; 13561c13f3c9SIngo Molnar g->p.bytes_thread = g->p.mb_thread *1024L*1024L; 13571c13f3c9SIngo Molnar 13581c13f3c9SIngo Molnar g->data = setup_shared_data(g->p.bytes_global); 13591c13f3c9SIngo Molnar 13601c13f3c9SIngo Molnar /* Startup serialization: */ 13611c13f3c9SIngo Molnar init_global_mutex(&g->start_work_mutex); 13621c13f3c9SIngo Molnar init_global_mutex(&g->startup_mutex); 13631c13f3c9SIngo Molnar init_global_mutex(&g->startup_done_mutex); 13641c13f3c9SIngo Molnar init_global_mutex(&g->stop_work_mutex); 13651c13f3c9SIngo Molnar 13661c13f3c9SIngo Molnar init_thread_data(); 13671c13f3c9SIngo Molnar 13681c13f3c9SIngo Molnar tprintf("#\n"); 1369b81a48eaSPetr Holasek if (parse_setup_cpu_list() || parse_setup_node_list()) 1370b81a48eaSPetr Holasek return -1; 13711c13f3c9SIngo Molnar tprintf("#\n"); 13721c13f3c9SIngo Molnar 13731c13f3c9SIngo Molnar print_summary(); 13741c13f3c9SIngo Molnar 13751c13f3c9SIngo Molnar return 0; 13761c13f3c9SIngo Molnar } 13771c13f3c9SIngo Molnar 13781c13f3c9SIngo Molnar static void deinit(void) 13791c13f3c9SIngo Molnar { 13801c13f3c9SIngo Molnar free_data(g->data, g->p.bytes_global); 13811c13f3c9SIngo Molnar g->data = NULL; 13821c13f3c9SIngo Molnar 13831c13f3c9SIngo Molnar deinit_thread_data(); 13841c13f3c9SIngo Molnar 13851c13f3c9SIngo Molnar free_data(g, sizeof(*g)); 13861c13f3c9SIngo Molnar g = NULL; 13871c13f3c9SIngo Molnar } 13881c13f3c9SIngo Molnar 13891c13f3c9SIngo Molnar /* 13901c13f3c9SIngo Molnar * Print a short or long result, depending on the verbosity setting: 13911c13f3c9SIngo Molnar */ 13921c13f3c9SIngo Molnar static void print_res(const char *name, double val, 13931c13f3c9SIngo Molnar const char *txt_unit, const char *txt_short, const char *txt_long) 13941c13f3c9SIngo Molnar { 13951c13f3c9SIngo Molnar if (!name) 13961c13f3c9SIngo Molnar name = "main,"; 13971c13f3c9SIngo Molnar 139824f1ced1SPetr Holasek if (!g->p.show_quiet) 13991c13f3c9SIngo Molnar printf(" %-30s %15.3f, %-15s %s\n", name, val, txt_unit, txt_short); 14001c13f3c9SIngo Molnar else 14011c13f3c9SIngo Molnar printf(" %14.3f %s\n", val, txt_long); 14021c13f3c9SIngo Molnar } 14031c13f3c9SIngo Molnar 14041c13f3c9SIngo Molnar static int __bench_numa(const char *name) 14051c13f3c9SIngo Molnar { 14061c13f3c9SIngo Molnar struct timeval start, stop, diff; 14071c13f3c9SIngo Molnar u64 runtime_ns_min, runtime_ns_sum; 14081c13f3c9SIngo Molnar pid_t *pids, pid, wpid; 14091c13f3c9SIngo Molnar double delta_runtime; 14101c13f3c9SIngo Molnar double runtime_avg; 14111c13f3c9SIngo Molnar double runtime_sec_max; 14121c13f3c9SIngo Molnar double runtime_sec_min; 14131c13f3c9SIngo Molnar int wait_stat; 14141c13f3c9SIngo Molnar double bytes; 14151c13f3c9SIngo Molnar int i, t; 14161c13f3c9SIngo Molnar 14171c13f3c9SIngo Molnar if (init()) 14181c13f3c9SIngo Molnar return -1; 14191c13f3c9SIngo Molnar 14201c13f3c9SIngo Molnar pids = zalloc(g->p.nr_proc * sizeof(*pids)); 14211c13f3c9SIngo Molnar pid = -1; 14221c13f3c9SIngo Molnar 14231c13f3c9SIngo Molnar /* All threads try to acquire it, this way we can wait for them to start up: */ 14241c13f3c9SIngo Molnar pthread_mutex_lock(&g->start_work_mutex); 14251c13f3c9SIngo Molnar 14261c13f3c9SIngo Molnar if (g->p.serialize_startup) { 14271c13f3c9SIngo Molnar tprintf(" #\n"); 14281c13f3c9SIngo Molnar tprintf(" # Startup synchronization: ..."); fflush(stdout); 14291c13f3c9SIngo Molnar } 14301c13f3c9SIngo Molnar 14311c13f3c9SIngo Molnar gettimeofday(&start, NULL); 14321c13f3c9SIngo Molnar 14331c13f3c9SIngo Molnar for (i = 0; i < g->p.nr_proc; i++) { 14341c13f3c9SIngo Molnar pid = fork(); 14351c13f3c9SIngo Molnar dprintf(" # process %2d: PID %d\n", i, pid); 14361c13f3c9SIngo Molnar 14371c13f3c9SIngo Molnar BUG_ON(pid < 0); 14381c13f3c9SIngo Molnar if (!pid) { 14391c13f3c9SIngo Molnar /* Child process: */ 14401c13f3c9SIngo Molnar worker_process(i); 14411c13f3c9SIngo Molnar 14421c13f3c9SIngo Molnar exit(0); 14431c13f3c9SIngo Molnar } 14441c13f3c9SIngo Molnar pids[i] = pid; 14451c13f3c9SIngo Molnar 14461c13f3c9SIngo Molnar } 14471c13f3c9SIngo Molnar /* Wait for all the threads to start up: */ 14481c13f3c9SIngo Molnar while (g->nr_tasks_started != g->p.nr_tasks) 14491c13f3c9SIngo Molnar usleep(1000); 14501c13f3c9SIngo Molnar 14511c13f3c9SIngo Molnar BUG_ON(g->nr_tasks_started != g->p.nr_tasks); 14521c13f3c9SIngo Molnar 14531c13f3c9SIngo Molnar if (g->p.serialize_startup) { 14541c13f3c9SIngo Molnar double startup_sec; 14551c13f3c9SIngo Molnar 14561c13f3c9SIngo Molnar pthread_mutex_lock(&g->startup_done_mutex); 14571c13f3c9SIngo Molnar 14581c13f3c9SIngo Molnar /* This will start all threads: */ 14591c13f3c9SIngo Molnar pthread_mutex_unlock(&g->start_work_mutex); 14601c13f3c9SIngo Molnar 14611c13f3c9SIngo Molnar /* This mutex is locked - the last started thread will wake us: */ 14621c13f3c9SIngo Molnar pthread_mutex_lock(&g->startup_done_mutex); 14631c13f3c9SIngo Molnar 14641c13f3c9SIngo Molnar gettimeofday(&stop, NULL); 14651c13f3c9SIngo Molnar 14661c13f3c9SIngo Molnar timersub(&stop, &start, &diff); 14671c13f3c9SIngo Molnar 14681c13f3c9SIngo Molnar startup_sec = diff.tv_sec * 1000000000.0; 14691c13f3c9SIngo Molnar startup_sec += diff.tv_usec * 1000.0; 14701c13f3c9SIngo Molnar startup_sec /= 1e9; 14711c13f3c9SIngo Molnar 14721c13f3c9SIngo Molnar tprintf(" threads initialized in %.6f seconds.\n", startup_sec); 14731c13f3c9SIngo Molnar tprintf(" #\n"); 14741c13f3c9SIngo Molnar 14751c13f3c9SIngo Molnar start = stop; 14761c13f3c9SIngo Molnar pthread_mutex_unlock(&g->startup_done_mutex); 14771c13f3c9SIngo Molnar } else { 14781c13f3c9SIngo Molnar gettimeofday(&start, NULL); 14791c13f3c9SIngo Molnar } 14801c13f3c9SIngo Molnar 14811c13f3c9SIngo Molnar /* Parent process: */ 14821c13f3c9SIngo Molnar 14831c13f3c9SIngo Molnar 14841c13f3c9SIngo Molnar for (i = 0; i < g->p.nr_proc; i++) { 14851c13f3c9SIngo Molnar wpid = waitpid(pids[i], &wait_stat, 0); 14861c13f3c9SIngo Molnar BUG_ON(wpid < 0); 14871c13f3c9SIngo Molnar BUG_ON(!WIFEXITED(wait_stat)); 14881c13f3c9SIngo Molnar 14891c13f3c9SIngo Molnar } 14901c13f3c9SIngo Molnar 14911c13f3c9SIngo Molnar runtime_ns_sum = 0; 14921c13f3c9SIngo Molnar runtime_ns_min = -1LL; 14931c13f3c9SIngo Molnar 14941c13f3c9SIngo Molnar for (t = 0; t < g->p.nr_tasks; t++) { 14951c13f3c9SIngo Molnar u64 thread_runtime_ns = g->threads[t].runtime_ns; 14961c13f3c9SIngo Molnar 14971c13f3c9SIngo Molnar runtime_ns_sum += thread_runtime_ns; 14981c13f3c9SIngo Molnar runtime_ns_min = min(thread_runtime_ns, runtime_ns_min); 14991c13f3c9SIngo Molnar } 15001c13f3c9SIngo Molnar 15011c13f3c9SIngo Molnar gettimeofday(&stop, NULL); 15021c13f3c9SIngo Molnar timersub(&stop, &start, &diff); 15031c13f3c9SIngo Molnar 15041c13f3c9SIngo Molnar BUG_ON(bench_format != BENCH_FORMAT_DEFAULT); 15051c13f3c9SIngo Molnar 15061c13f3c9SIngo Molnar tprintf("\n ###\n"); 15071c13f3c9SIngo Molnar tprintf("\n"); 15081c13f3c9SIngo Molnar 15091c13f3c9SIngo Molnar runtime_sec_max = diff.tv_sec * 1000000000.0; 15101c13f3c9SIngo Molnar runtime_sec_max += diff.tv_usec * 1000.0; 15111c13f3c9SIngo Molnar runtime_sec_max /= 1e9; 15121c13f3c9SIngo Molnar 15131c13f3c9SIngo Molnar runtime_sec_min = runtime_ns_min/1e9; 15141c13f3c9SIngo Molnar 15151c13f3c9SIngo Molnar bytes = g->bytes_done; 15161c13f3c9SIngo Molnar runtime_avg = (double)runtime_ns_sum / g->p.nr_tasks / 1e9; 15171c13f3c9SIngo Molnar 15181c13f3c9SIngo Molnar if (g->p.measure_convergence) { 15191c13f3c9SIngo Molnar print_res(name, runtime_sec_max, 15201c13f3c9SIngo Molnar "secs,", "NUMA-convergence-latency", "secs latency to NUMA-converge"); 15211c13f3c9SIngo Molnar } 15221c13f3c9SIngo Molnar 15231c13f3c9SIngo Molnar print_res(name, runtime_sec_max, 15241c13f3c9SIngo Molnar "secs,", "runtime-max/thread", "secs slowest (max) thread-runtime"); 15251c13f3c9SIngo Molnar 15261c13f3c9SIngo Molnar print_res(name, runtime_sec_min, 15271c13f3c9SIngo Molnar "secs,", "runtime-min/thread", "secs fastest (min) thread-runtime"); 15281c13f3c9SIngo Molnar 15291c13f3c9SIngo Molnar print_res(name, runtime_avg, 15301c13f3c9SIngo Molnar "secs,", "runtime-avg/thread", "secs average thread-runtime"); 15311c13f3c9SIngo Molnar 15321c13f3c9SIngo Molnar delta_runtime = (runtime_sec_max - runtime_sec_min)/2.0; 15331c13f3c9SIngo Molnar print_res(name, delta_runtime / runtime_sec_max * 100.0, 15341c13f3c9SIngo Molnar "%,", "spread-runtime/thread", "% difference between max/avg runtime"); 15351c13f3c9SIngo Molnar 15361c13f3c9SIngo Molnar print_res(name, bytes / g->p.nr_tasks / 1e9, 15371c13f3c9SIngo Molnar "GB,", "data/thread", "GB data processed, per thread"); 15381c13f3c9SIngo Molnar 15391c13f3c9SIngo Molnar print_res(name, bytes / 1e9, 15401c13f3c9SIngo Molnar "GB,", "data-total", "GB data processed, total"); 15411c13f3c9SIngo Molnar 15421c13f3c9SIngo Molnar print_res(name, runtime_sec_max * 1e9 / (bytes / g->p.nr_tasks), 15431c13f3c9SIngo Molnar "nsecs,", "runtime/byte/thread","nsecs/byte/thread runtime"); 15441c13f3c9SIngo Molnar 15451c13f3c9SIngo Molnar print_res(name, bytes / g->p.nr_tasks / 1e9 / runtime_sec_max, 15461c13f3c9SIngo Molnar "GB/sec,", "thread-speed", "GB/sec/thread speed"); 15471c13f3c9SIngo Molnar 15481c13f3c9SIngo Molnar print_res(name, bytes / runtime_sec_max / 1e9, 15491c13f3c9SIngo Molnar "GB/sec,", "total-speed", "GB/sec total speed"); 15501c13f3c9SIngo Molnar 15511c13f3c9SIngo Molnar free(pids); 15521c13f3c9SIngo Molnar 15531c13f3c9SIngo Molnar deinit(); 15541c13f3c9SIngo Molnar 15551c13f3c9SIngo Molnar return 0; 15561c13f3c9SIngo Molnar } 15571c13f3c9SIngo Molnar 15581c13f3c9SIngo Molnar #define MAX_ARGS 50 15591c13f3c9SIngo Molnar 15601c13f3c9SIngo Molnar static int command_size(const char **argv) 15611c13f3c9SIngo Molnar { 15621c13f3c9SIngo Molnar int size = 0; 15631c13f3c9SIngo Molnar 15641c13f3c9SIngo Molnar while (*argv) { 15651c13f3c9SIngo Molnar size++; 15661c13f3c9SIngo Molnar argv++; 15671c13f3c9SIngo Molnar } 15681c13f3c9SIngo Molnar 15691c13f3c9SIngo Molnar BUG_ON(size >= MAX_ARGS); 15701c13f3c9SIngo Molnar 15711c13f3c9SIngo Molnar return size; 15721c13f3c9SIngo Molnar } 15731c13f3c9SIngo Molnar 15741c13f3c9SIngo Molnar static void init_params(struct params *p, const char *name, int argc, const char **argv) 15751c13f3c9SIngo Molnar { 15761c13f3c9SIngo Molnar int i; 15771c13f3c9SIngo Molnar 15781c13f3c9SIngo Molnar printf("\n # Running %s \"perf bench numa", name); 15791c13f3c9SIngo Molnar 15801c13f3c9SIngo Molnar for (i = 0; i < argc; i++) 15811c13f3c9SIngo Molnar printf(" %s", argv[i]); 15821c13f3c9SIngo Molnar 15831c13f3c9SIngo Molnar printf("\"\n"); 15841c13f3c9SIngo Molnar 15851c13f3c9SIngo Molnar memset(p, 0, sizeof(*p)); 15861c13f3c9SIngo Molnar 15871c13f3c9SIngo Molnar /* Initialize nonzero defaults: */ 15881c13f3c9SIngo Molnar 15891c13f3c9SIngo Molnar p->serialize_startup = 1; 15901c13f3c9SIngo Molnar p->data_reads = true; 15911c13f3c9SIngo Molnar p->data_writes = true; 15921c13f3c9SIngo Molnar p->data_backwards = true; 15931c13f3c9SIngo Molnar p->data_rand_walk = true; 15941c13f3c9SIngo Molnar p->nr_loops = -1; 15951c13f3c9SIngo Molnar p->init_random = true; 159640ba93e3SRamkumar Ramachandra p->mb_global_str = "1"; 159740ba93e3SRamkumar Ramachandra p->nr_proc = 1; 159840ba93e3SRamkumar Ramachandra p->nr_threads = 1; 159940ba93e3SRamkumar Ramachandra p->nr_secs = 5; 16000fae799eSArnaldo Carvalho de Melo p->run_all = argc == 1; 16011c13f3c9SIngo Molnar } 16021c13f3c9SIngo Molnar 16031c13f3c9SIngo Molnar static int run_bench_numa(const char *name, const char **argv) 16041c13f3c9SIngo Molnar { 16051c13f3c9SIngo Molnar int argc = command_size(argv); 16061c13f3c9SIngo Molnar 16071c13f3c9SIngo Molnar init_params(&p0, name, argc, argv); 16081c13f3c9SIngo Molnar argc = parse_options(argc, argv, options, bench_numa_usage, 0); 16091c13f3c9SIngo Molnar if (argc) 16101c13f3c9SIngo Molnar goto err; 16111c13f3c9SIngo Molnar 16121c13f3c9SIngo Molnar if (__bench_numa(name)) 16131c13f3c9SIngo Molnar goto err; 16141c13f3c9SIngo Molnar 16151c13f3c9SIngo Molnar return 0; 16161c13f3c9SIngo Molnar 16171c13f3c9SIngo Molnar err: 16181c13f3c9SIngo Molnar return -1; 16191c13f3c9SIngo Molnar } 16201c13f3c9SIngo Molnar 16211c13f3c9SIngo Molnar #define OPT_BW_RAM "-s", "20", "-zZq", "--thp", " 1", "--no-data_rand_walk" 16221c13f3c9SIngo Molnar #define OPT_BW_RAM_NOTHP OPT_BW_RAM, "--thp", "-1" 16231c13f3c9SIngo Molnar 16241c13f3c9SIngo Molnar #define OPT_CONV "-s", "100", "-zZ0qcm", "--thp", " 1" 16251c13f3c9SIngo Molnar #define OPT_CONV_NOTHP OPT_CONV, "--thp", "-1" 16261c13f3c9SIngo Molnar 16271c13f3c9SIngo Molnar #define OPT_BW "-s", "20", "-zZ0q", "--thp", " 1" 16281c13f3c9SIngo Molnar #define OPT_BW_NOTHP OPT_BW, "--thp", "-1" 16291c13f3c9SIngo Molnar 16301c13f3c9SIngo Molnar /* 16311c13f3c9SIngo Molnar * The built-in test-suite executed by "perf bench numa -a". 16321c13f3c9SIngo Molnar * 16331c13f3c9SIngo Molnar * (A minimum of 4 nodes and 16 GB of RAM is recommended.) 16341c13f3c9SIngo Molnar */ 16351c13f3c9SIngo Molnar static const char *tests[][MAX_ARGS] = { 16361c13f3c9SIngo Molnar /* Basic single-stream NUMA bandwidth measurements: */ 16371c13f3c9SIngo Molnar { "RAM-bw-local,", "mem", "-p", "1", "-t", "1", "-P", "1024", 16381c13f3c9SIngo Molnar "-C" , "0", "-M", "0", OPT_BW_RAM }, 16391c13f3c9SIngo Molnar { "RAM-bw-local-NOTHP,", 16401c13f3c9SIngo Molnar "mem", "-p", "1", "-t", "1", "-P", "1024", 16411c13f3c9SIngo Molnar "-C" , "0", "-M", "0", OPT_BW_RAM_NOTHP }, 16421c13f3c9SIngo Molnar { "RAM-bw-remote,", "mem", "-p", "1", "-t", "1", "-P", "1024", 16431c13f3c9SIngo Molnar "-C" , "0", "-M", "1", OPT_BW_RAM }, 16441c13f3c9SIngo Molnar 16451c13f3c9SIngo Molnar /* 2-stream NUMA bandwidth measurements: */ 16461c13f3c9SIngo Molnar { "RAM-bw-local-2x,", "mem", "-p", "2", "-t", "1", "-P", "1024", 16471c13f3c9SIngo Molnar "-C", "0,2", "-M", "0x2", OPT_BW_RAM }, 16481c13f3c9SIngo Molnar { "RAM-bw-remote-2x,", "mem", "-p", "2", "-t", "1", "-P", "1024", 16491c13f3c9SIngo Molnar "-C", "0,2", "-M", "1x2", OPT_BW_RAM }, 16501c13f3c9SIngo Molnar 16511c13f3c9SIngo Molnar /* Cross-stream NUMA bandwidth measurement: */ 16521c13f3c9SIngo Molnar { "RAM-bw-cross,", "mem", "-p", "2", "-t", "1", "-P", "1024", 16531c13f3c9SIngo Molnar "-C", "0,8", "-M", "1,0", OPT_BW_RAM }, 16541c13f3c9SIngo Molnar 16551c13f3c9SIngo Molnar /* Convergence latency measurements: */ 16561c13f3c9SIngo Molnar { " 1x3-convergence,", "mem", "-p", "1", "-t", "3", "-P", "512", OPT_CONV }, 16571c13f3c9SIngo Molnar { " 1x4-convergence,", "mem", "-p", "1", "-t", "4", "-P", "512", OPT_CONV }, 16581c13f3c9SIngo Molnar { " 1x6-convergence,", "mem", "-p", "1", "-t", "6", "-P", "1020", OPT_CONV }, 16591c13f3c9SIngo Molnar { " 2x3-convergence,", "mem", "-p", "3", "-t", "3", "-P", "1020", OPT_CONV }, 16601c13f3c9SIngo Molnar { " 3x3-convergence,", "mem", "-p", "3", "-t", "3", "-P", "1020", OPT_CONV }, 16611c13f3c9SIngo Molnar { " 4x4-convergence,", "mem", "-p", "4", "-t", "4", "-P", "512", OPT_CONV }, 16621c13f3c9SIngo Molnar { " 4x4-convergence-NOTHP,", 16631c13f3c9SIngo Molnar "mem", "-p", "4", "-t", "4", "-P", "512", OPT_CONV_NOTHP }, 16641c13f3c9SIngo Molnar { " 4x6-convergence,", "mem", "-p", "4", "-t", "6", "-P", "1020", OPT_CONV }, 16651c13f3c9SIngo Molnar { " 4x8-convergence,", "mem", "-p", "4", "-t", "8", "-P", "512", OPT_CONV }, 16661c13f3c9SIngo Molnar { " 8x4-convergence,", "mem", "-p", "8", "-t", "4", "-P", "512", OPT_CONV }, 16671c13f3c9SIngo Molnar { " 8x4-convergence-NOTHP,", 16681c13f3c9SIngo Molnar "mem", "-p", "8", "-t", "4", "-P", "512", OPT_CONV_NOTHP }, 16691c13f3c9SIngo Molnar { " 3x1-convergence,", "mem", "-p", "3", "-t", "1", "-P", "512", OPT_CONV }, 16701c13f3c9SIngo Molnar { " 4x1-convergence,", "mem", "-p", "4", "-t", "1", "-P", "512", OPT_CONV }, 16711c13f3c9SIngo Molnar { " 8x1-convergence,", "mem", "-p", "8", "-t", "1", "-P", "512", OPT_CONV }, 16721c13f3c9SIngo Molnar { "16x1-convergence,", "mem", "-p", "16", "-t", "1", "-P", "256", OPT_CONV }, 16731c13f3c9SIngo Molnar { "32x1-convergence,", "mem", "-p", "32", "-t", "1", "-P", "128", OPT_CONV }, 16741c13f3c9SIngo Molnar 16751c13f3c9SIngo Molnar /* Various NUMA process/thread layout bandwidth measurements: */ 16761c13f3c9SIngo Molnar { " 2x1-bw-process,", "mem", "-p", "2", "-t", "1", "-P", "1024", OPT_BW }, 16771c13f3c9SIngo Molnar { " 3x1-bw-process,", "mem", "-p", "3", "-t", "1", "-P", "1024", OPT_BW }, 16781c13f3c9SIngo Molnar { " 4x1-bw-process,", "mem", "-p", "4", "-t", "1", "-P", "1024", OPT_BW }, 16791c13f3c9SIngo Molnar { " 8x1-bw-process,", "mem", "-p", "8", "-t", "1", "-P", " 512", OPT_BW }, 16801c13f3c9SIngo Molnar { " 8x1-bw-process-NOTHP,", 16811c13f3c9SIngo Molnar "mem", "-p", "8", "-t", "1", "-P", " 512", OPT_BW_NOTHP }, 16821c13f3c9SIngo Molnar { "16x1-bw-process,", "mem", "-p", "16", "-t", "1", "-P", "256", OPT_BW }, 16831c13f3c9SIngo Molnar 16841c13f3c9SIngo Molnar { " 4x1-bw-thread,", "mem", "-p", "1", "-t", "4", "-T", "256", OPT_BW }, 16851c13f3c9SIngo Molnar { " 8x1-bw-thread,", "mem", "-p", "1", "-t", "8", "-T", "256", OPT_BW }, 16861c13f3c9SIngo Molnar { "16x1-bw-thread,", "mem", "-p", "1", "-t", "16", "-T", "128", OPT_BW }, 16871c13f3c9SIngo Molnar { "32x1-bw-thread,", "mem", "-p", "1", "-t", "32", "-T", "64", OPT_BW }, 16881c13f3c9SIngo Molnar 16891c13f3c9SIngo Molnar { " 2x3-bw-thread,", "mem", "-p", "2", "-t", "3", "-P", "512", OPT_BW }, 16901c13f3c9SIngo Molnar { " 4x4-bw-thread,", "mem", "-p", "4", "-t", "4", "-P", "512", OPT_BW }, 16911c13f3c9SIngo Molnar { " 4x6-bw-thread,", "mem", "-p", "4", "-t", "6", "-P", "512", OPT_BW }, 16921c13f3c9SIngo Molnar { " 4x8-bw-thread,", "mem", "-p", "4", "-t", "8", "-P", "512", OPT_BW }, 16931c13f3c9SIngo Molnar { " 4x8-bw-thread-NOTHP,", 16941c13f3c9SIngo Molnar "mem", "-p", "4", "-t", "8", "-P", "512", OPT_BW_NOTHP }, 16951c13f3c9SIngo Molnar { " 3x3-bw-thread,", "mem", "-p", "3", "-t", "3", "-P", "512", OPT_BW }, 16961c13f3c9SIngo Molnar { " 5x5-bw-thread,", "mem", "-p", "5", "-t", "5", "-P", "512", OPT_BW }, 16971c13f3c9SIngo Molnar 16981c13f3c9SIngo Molnar { "2x16-bw-thread,", "mem", "-p", "2", "-t", "16", "-P", "512", OPT_BW }, 16991c13f3c9SIngo Molnar { "1x32-bw-thread,", "mem", "-p", "1", "-t", "32", "-P", "2048", OPT_BW }, 17001c13f3c9SIngo Molnar 17011c13f3c9SIngo Molnar { "numa02-bw,", "mem", "-p", "1", "-t", "32", "-T", "32", OPT_BW }, 17021c13f3c9SIngo Molnar { "numa02-bw-NOTHP,", "mem", "-p", "1", "-t", "32", "-T", "32", OPT_BW_NOTHP }, 17031c13f3c9SIngo Molnar { "numa01-bw-thread,", "mem", "-p", "2", "-t", "16", "-T", "192", OPT_BW }, 17041c13f3c9SIngo Molnar { "numa01-bw-thread-NOTHP,", 17051c13f3c9SIngo Molnar "mem", "-p", "2", "-t", "16", "-T", "192", OPT_BW_NOTHP }, 17061c13f3c9SIngo Molnar }; 17071c13f3c9SIngo Molnar 17081c13f3c9SIngo Molnar static int bench_all(void) 17091c13f3c9SIngo Molnar { 17101c13f3c9SIngo Molnar int nr = ARRAY_SIZE(tests); 17111c13f3c9SIngo Molnar int ret; 17121c13f3c9SIngo Molnar int i; 17131c13f3c9SIngo Molnar 17141c13f3c9SIngo Molnar ret = system("echo ' #'; echo ' # Running test on: '$(uname -a); echo ' #'"); 17151c13f3c9SIngo Molnar BUG_ON(ret < 0); 17161c13f3c9SIngo Molnar 17171c13f3c9SIngo Molnar for (i = 0; i < nr; i++) { 1718b81a48eaSPetr Holasek run_bench_numa(tests[i][0], tests[i] + 1); 17191c13f3c9SIngo Molnar } 17201c13f3c9SIngo Molnar 17211c13f3c9SIngo Molnar printf("\n"); 17221c13f3c9SIngo Molnar 17231c13f3c9SIngo Molnar return 0; 17241c13f3c9SIngo Molnar } 17251c13f3c9SIngo Molnar 17261c13f3c9SIngo Molnar int bench_numa(int argc, const char **argv, const char *prefix __maybe_unused) 17271c13f3c9SIngo Molnar { 17281c13f3c9SIngo Molnar init_params(&p0, "main,", argc, argv); 17291c13f3c9SIngo Molnar argc = parse_options(argc, argv, options, bench_numa_usage, 0); 17301c13f3c9SIngo Molnar if (argc) 17311c13f3c9SIngo Molnar goto err; 17321c13f3c9SIngo Molnar 17331c13f3c9SIngo Molnar if (p0.run_all) 17341c13f3c9SIngo Molnar return bench_all(); 17351c13f3c9SIngo Molnar 17361c13f3c9SIngo Molnar if (__bench_numa(NULL)) 17371c13f3c9SIngo Molnar goto err; 17381c13f3c9SIngo Molnar 17391c13f3c9SIngo Molnar return 0; 17401c13f3c9SIngo Molnar 17411c13f3c9SIngo Molnar err: 17421c13f3c9SIngo Molnar usage_with_options(numa_usage, options); 17431c13f3c9SIngo Molnar return -1; 17441c13f3c9SIngo Molnar } 1745