Clear Cache in redhat

How To Clear Cache Memory, Buffer Cache In Linux

how to clear cache, It’s a good idea to clear the memory on the server because it can slow down the server performance. There will be no problem of flushing the cache on the server.

Check Out : Rpmdb Open Failed

As this is a non-destructive operation and dirty objects are not free able, You should run ‘sync’ first.

Let’s Begin 

1. Free Pagecache

sync; echo 1 > /proc/sys/vm/drop_caches

2. Free Dentries and inodes

sync; echo 2 > /proc/sys/vm/drop_caches

3. Free Pagecache, Dentries and inodes

sync; echo 3 > /proc/sys/vm/drop_caches

You can also create a script and run this using crontab

crontab -e

10 * * * * sync; “echo 3 > /proc/sys/vm/drop_caches”

You’re done

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