| Brendan Gregg | 48fbc3e | 2015-08-18 14:56:14 -0700 | [diff] [blame] | 1 | Demonstrations of pidpersec, the Linux eBPF/bcc version. |
| 2 | |
| 3 | |
| 4 | This shows the number of new processes created per second, measured by tracing |
| 5 | the kernel fork() routine: |
| 6 | |
| 7 | # ./pidpersec |
| 8 | Tracing... Ctrl-C to end. |
| 9 | 18:33:06: PIDs/sec: 4 |
| 10 | 18:33:07: PIDs/sec: 5 |
| 11 | 18:33:08: PIDs/sec: 4 |
| 12 | 18:33:09: PIDs/sec: 4 |
| 13 | 18:33:10: PIDs/sec: 21 |
| 14 | 18:33:11: PIDs/sec: 5 |
| 15 | 18:33:12: PIDs/sec: 4 |
| 16 | 18:33:13: PIDs/sec: 4 |
| 17 | |
| 18 | Each second there are four new processes (this happens to be caused by a |
| 19 | launcher script that is retrying in a loop, and encountering errors). |
| 20 | |
| 21 | At 18:33:10, I typed "man ls" in another server session, which caused an |
| 22 | increase in the number of new processes as the necessary commands were run. |