Documentation/trace/histogram.rst

173       /sys/kernel/tracing/events/net/netif_receive_skb/trigger
175     # echo 'enable_hist:net:netif_receive_skb if filename==/usr/bin/wget' > \
178     # echo 'disable_hist:net:netif_receive_skb if comm==wget' > \
1023   netif_receive_skb event when downloading a decent-sized file using
1027   netif_receive_skb event::
1030            /sys/kernel/tracing/events/net/netif_receive_skb/trigger
1035   set up on netif_receive_skb if and only if it sees a
1037   that happens, all netif_receive_skb events are aggregated into a
1040     # echo 'enable_hist:net:netif_receive_skb if filename==/usr/bin/wget' > \
1043   The aggregation continues until the netif_receive_skb is paused
1048     # echo 'disable_hist:net:netif_receive_skb if comm==wget' > \
1052   trigger filter matches 'comm==wget', the netif_receive_skb hist
1055   The overall effect is that netif_receive_skb events are aggregated
1062     # cat /sys/kernel/tracing/events/net/netif_receive_skb/hist
1136   The above shows all the netif_receive_skb callpaths and their total
1146            /sys/kernel/tracing/events/net/netif_receive_skb/trigger
1151     # cat /sys/kernel/tracing/events/net/netif_receive_skb/hist
1159   Since we want to see the detailed list of every netif_receive_skb
1165     # echo 'enable_event:net:netif_receive_skb if filename==/usr/bin/wget' > \
1168     # echo 'disable_event:net:netif_receive_skb if comm==wget' > \
1177     enable_event:net:netif_receive_skb:unlimited if filename==/usr/bin/wget
1178     enable_hist:net:netif_receive_skb:unlimited if filename==/usr/bin/wget
1181     enable_event:net:netif_receive_skb:unlimited if comm==wget
1182     disable_hist:net:netif_receive_skb:unlimited if comm==wget
1209 …      wget-15108 [000] ..s1 31769.606929: netif_receive_skb: dev=lo skbaddr=ffff88009c353100 len=60
1210 …      wget-15108 [000] ..s1 31769.606999: netif_receive_skb: dev=lo skbaddr=ffff88009c353200 len=60
1211 …  dnsmasq-1382  [000] ..s1 31769.677652: netif_receive_skb: dev=lo skbaddr=ffff88009c352b00 len=130
1212 …  dnsmasq-1382  [000] ..s1 31769.685917: netif_receive_skb: dev=lo skbaddr=ffff88009c352200 len=138
1214 …irq/29-iwlwifi-559   [002] ..s. 31772.031529: netif_receive_skb: dev=wlan0 skbaddr=ffff88009d433d0…
1215 …irq/29-iwlwifi-559   [002] ..s. 31772.031572: netif_receive_skb: dev=wlan0 skbaddr=ffff88009d43220…
1216 …irq/29-iwlwifi-559   [002] ..s. 31772.032196: netif_receive_skb: dev=wlan0 skbaddr=ffff88009d43310…
1217 …irq/29-iwlwifi-559   [002] ..s. 31772.032761: netif_receive_skb: dev=wlan0 skbaddr=ffff88009d43300…
1218 …irq/29-iwlwifi-559   [002] ..s. 31772.033220: netif_receive_skb: dev=wlan0 skbaddr=ffff88009d432e0…
1230            /sys/kernel/tracing/events/net/netif_receive_skb/trigger
1232            /sys/kernel/tracing/events/net/netif_receive_skb/trigger
1234            /sys/kernel/tracing/events/net/netif_receive_skb/trigger
1236            /sys/kernel/tracing/events/net/netif_receive_skb/trigger
1238            /sys/kernel/tracing/events/net/netif_receive_skb/trigger
1250     # cat /sys/kernel/tracing/events/net/netif_receive_skb/hist
1371            /sys/kernel/tracing/events/net/netif_receive_skb/trigger
1378     # cat /sys/kernel/tracing/events/net/netif_receive_skb/hist;