Current File : //usr/share/doc/bpftrace/examples/naptime_example.txt
Demonstrations of naptime, the Linux bpftrace/eBPF version.
Tracing application sleeps via the nanosleep(2) syscall:
# ./naptime.bt
Attaching 2 probes...
Tracing sleeps. Hit Ctrl-C to end.
TIME PCOMM PPID COMM PID SECONDS
15:50:00 1 systemd 1319 mysqld 1.000
15:50:01 4388 bash 25250 sleep 5.000
15:50:01 1 systemd 1319 mysqld 1.000
15:50:01 1 systemd 1180 cron 60.000
15:50:01 1 systemd 1180 cron 60.000
15:50:02 1 systemd 1319 mysqld 1.000
[...]
The output shows mysqld performing a one second sleep every second (likely
a daemon thread), a sleep(1) command sleeping for five seconds and called
by bash, and cron threads sleeping for 60 seconds.
Mini Shell