| Demonstrations of swapin, the Linux BCC/eBPF version. |
| |
| |
| This tool counts swapins by process, to show which process is affected by |
| swapping. For example: |
| |
| # swapin.py |
| Counting swap ins. Ctrl-C to end. |
| 13:36:58 |
| COMM PID COUNT |
| |
| 13:36:59 |
| COMM PID COUNT |
| gnome-shell 2239 12410 |
| |
| 13:37:00 |
| COMM PID COUNT |
| chrome 4536 14635 |
| |
| 13:37:01 |
| COMM PID COUNT |
| gnome-shell 2239 14 |
| cron 1180 23 |
| |
| 13:37:02 |
| COMM PID COUNT |
| gnome-shell 2239 2496 |
| [...] |
| |
| While tracing, this showed that PID 2239 (gnome-shell) and PID 4536 (chrome) |
| suffered over ten thousand swapins. |
| |
| #swapin.py -T |
| Counting swap ins. Ctrl-C to end. |
| COMM PID COUNT |
| b'firefox' 60965 4 |
| |
| COMM PID COUNT |
| b'IndexedDB #1' 60965 1 |
| b'firefox' 60965 2 |
| |
| COMM PID COUNT |
| b'StreamTrans #9' 60965 1 |
| b'firefox' 60965 3 |
| |
| COMM PID COUNT |
| |
| COMM PID COUNT |
| b'sssd_kcm' 3605 384 |
| [--] |
| |
| While tracing along with -T flag, it does not show timestamp. |
| |
| |
| |
| USAGE: |
| |
| # swapin.py -h |
| usage: swapin.py [-h] [-T] [interval] [count] |
| |
| Count swapin events by process. |
| |
| positional arguments: |
| interval output interval, in seconds |
| count number of outputs |
| |
| optional arguments: |
| -h, --help show this help message and exit |
| -T, --notime do not show the timestamp (HH:MM:SS) |
