hilbix
/ kswapd-check.sh
Created
March 28, 2013 15:27
Bash/AWK script to detect 100% CPU on kswapd processes, caused by a known Linux kernel issue on RHEL 5.5 (and CentOS) kernel 2.6.18-194.el5. Returns 0 if no problem, and usually 2 when the problem hits. (Note: It will return 1 on first invocation. Better safe than sorry.)
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| #!/bin/bash | |
| PIDFILE=/tmp/kswapd-check.pids | |
| scanpids() | |
| { | |
| cat -s /proc/[1-9]*/stat 2>/dev/null | | |
| awk 'BEGIN { | |
| want["(kswapd0)"]=1; | |
| want["(kswapd1)"]=1; |
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