| Server IP : 15.235.198.142 / Your IP : 216.73.216.190 Web Server : Apache/2.4.58 (Ubuntu) System : Linux ballsack 6.8.0-45-generic #45-Ubuntu SMP PREEMPT_DYNAMIC Fri Aug 30 12:02:04 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 8.3.6 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : OFF Directory : /usr/share/doc/bpftrace/examples/ |
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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.