1# system call top 2# (c) 2010, Tom Zanussi <tzanussi@gmail.com> 3# Licensed under the terms of the GNU GPL License version 2 4# 5# Periodically displays system-wide system call totals, broken down by 6# syscall. If a [comm] arg is specified, only syscalls called by 7# [comm] are displayed. If an [interval] arg is specified, the display 8# will be refreshed every [interval] seconds. The default interval is 9# 3 seconds. 10 11import os, sys, thread, time 12 13sys.path.append(os.environ['PERF_EXEC_PATH'] + \ 14 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace') 15 16from perf_trace_context import * 17from Core import * 18from Util import * 19 20usage = "perf script -s sctop.py [comm] [interval]\n"; 21 22for_comm = None 23default_interval = 3 24interval = default_interval 25 26if len(sys.argv) > 3: 27 sys.exit(usage) 28 29if len(sys.argv) > 2: 30 for_comm = sys.argv[1] 31 interval = int(sys.argv[2]) 32elif len(sys.argv) > 1: 33 try: 34 interval = int(sys.argv[1]) 35 except ValueError: 36 for_comm = sys.argv[1] 37 interval = default_interval 38 39syscalls = autodict() 40 41def trace_begin(): 42 thread.start_new_thread(print_syscall_totals, (interval,)) 43 pass 44 45def raw_syscalls__sys_enter(event_name, context, common_cpu, 46 common_secs, common_nsecs, common_pid, common_comm, 47 common_callchain, id, args): 48 if for_comm is not None: 49 if common_comm != for_comm: 50 return 51 try: 52 syscalls[id] += 1 53 except TypeError: 54 syscalls[id] = 1 55 56def syscalls__sys_enter(event_name, context, common_cpu, 57 common_secs, common_nsecs, common_pid, common_comm, 58 id, args): 59 raw_syscalls__sys_enter(**locals()) 60 61def print_syscall_totals(interval): 62 while 1: 63 clear_term() 64 if for_comm is not None: 65 print "\nsyscall events for %s:\n\n" % (for_comm), 66 else: 67 print "\nsyscall events:\n\n", 68 69 print "%-40s %10s\n" % ("event", "count"), 70 print "%-40s %10s\n" % ("----------------------------------------", \ 71 "----------"), 72 73 for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \ 74 reverse = True): 75 try: 76 print "%-40s %10d\n" % (syscall_name(id), val), 77 except TypeError: 78 pass 79 syscalls.clear() 80 time.sleep(interval) 81