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December 14, 2010


How to clear out the cache being used

Linux has a good memory management feature that will use up any “extra” RAM you have to cache stuff. This section of the memory being used is SUPPOSED to be freely available to be taken over by any other process that actually needs it. This will eventually reduce the performance of your system. Following command will help you.

[root@l3admins]# free -m
total       used       free     shared    buffers     cached
Mem:          3990       3181        809          0        448       2228
-/+ buffers/cache:        503       3486
Swap:         9452          0       9452

Use the following command as root to clear cache from your machine.

sync; echo 3 > /proc/sys/vm/drop_caches
This will only support Kernels 2.6.16 and newer.

The above command will cleared out the cache in your machine.

Read more from Commands, Linux
2 Comments Post a comment
  1. Dec 20 2010

    boss, kool 🙂

  2. Dec 20 2010

    Hi Prajith,

    Thnx, for your comment.

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