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  • How can i clear all cache and buffered files in linux server (RHEL 5) ?
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@Kumar - you might find the following thread on cache useful: serverfault.com/questions/105606/deleting-linux-cached-ram – Patrick R Jan 30 '10 at 13:39
Someone may be able to suggest something else if you explained why you want to. vm/drop_caches wipes the OS's caches of files on disc; it has no semantic effect just kills performance, which makes it useful for performance testing and (mostly) nothing else. – MarkR Jan 31 '10 at 21:34
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in this post it is explained how to do it:

http://serverfault.com/questions/105606/deleting-linux-cached-ram

but be sure to read the complete post for why or why not to clear the caches.

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up vote 2 down vote

As root: echo 3 > /proc/sys/vm/drop_caches

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