Current File : //usr/share/doc/bpfcc-tools/examples/doc/swapin_example.txt
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)
Mini Shell