name : 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.