How to clear linux memory cache ..
Aug 26, 2010 in Linux
From http://www.scottklarr.com/topic/134/linux-how-to-clear-the-cache-from-memory/
$ sync; echo 3 > /proc/sys/vm/drop_caches
Wait for caches to be flushed..
$ sync; echo 0 > /proc/sys/vm/drop_caches