Clearing Memory (RAM) Cache on CentOS

Question

I know this has been asked in a similar way in the past but I'm just curious.

If I made a script and made it run every midnight to check if my memory usage was higher than let's say, 80... would it be a bad idea to make the script automatically run sync; echo 1 > /proc/sys/vm/drop_caches? I often get into an issue where my RAM usage gets to 99% because of this and I'm just getting a little bit worried.

Thanks in advance.

possible duplicate of [Why drop caches in Linux?](http://serverfault.com/questions/597115/why-drop-caches-in-linux) — , Jan 01 '15 at 12:51
Are you seriously asking how to get your computer to waste more memory rather than using it efficiently? — David Schwartz, Jan 02 '15 at 06:16

score 5 · Accepted Answer · edited Apr 13 '17 at 12:13

5

You don't need to do this. Linux will drop all caches if it needs the RAM for other purposes. See http://www.linuxatemyram.com/ and Why is Linux reporting "free" memory strangely? for more information.

edited Apr 13 '17 at 12:13

Community

1

answered Jan 01 '15 at 12:23

Sven

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Clearing Memory (RAM) Cache on CentOS

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