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earlyoom checks the amount of available memory and free swap up to 10
times a second (less often if there is a lot of free memory). By
default if both are below 10%, it will kill the largest process
(highest oom_score). The percentage value is configurable via command
line arguments.
To enable it, put this line in your rc.local after running chmod +x on
/etc/rc.d/rc.earlyoom:
if [ -x /etc/rc.d/rc.earlyoom ];
then
/etc/rc.d/rc.earlyoom start
fi
and to have it turnoff at shutdown, simply put this in your
rc.local_shutdown:
if [ -x /etc/rc.d/rc.earlyoom ];
then
/etc/rc.d/rc.earlyoom stop
fi
A log file for it is kept at /var/log/earlyoom.log
And earlyoom can be configured by modifying /etc/default/earlyoom
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