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.bt 
Attaching 2 probes...
13:36:59

13:37:00
@[chrome, 4536]: 10809
@[gnome-shell, 2239]: 12410

13:37:01
@[chrome, 4536]: 3826

13:37:02
@[cron, 1180]: 23
@[gnome-shell, 2239]: 2462

13:37:03
@[gnome-shell, 1444]: 4
@[gnome-shell, 2239]: 3420

13:37:04

13:37:05
[...]

While tracing, this showed that PID 2239 (gnome-shell) and PID 4536 (chrome)
suffered over ten thousand swapins.
