www.unnionline.com » Inode http://www.unnionline.com/blog Wed, 30 Nov 2011 11:49:28 +0000 en hourly 1 http://wordpress.org/?v=3.1.1 Free Up Cache Memory in Ubuntu http://www.unnionline.com/blog/2009/05/free-up-cache-memory-in-ubuntu/ http://www.unnionline.com/blog/2009/05/free-up-cache-memory-in-ubuntu/#comments Sat, 30 May 2009 09:19:09 +0000 cbaunni http://www.unnionline.com/blog/?p=113 Ever wondered how to remove the cache memory in Ubuntu? Linux kernels 2.6.16 and newer provide a mechanism to clear the inode, page, and dentry caches on demand. All you have to do is echo a value to the proc filesystem, and you’re done. Follow the recipe below:

As this is a non-destructive operation and dirty objects are not freeable, run:
sync

To free pagecache:
sudo sh -c "echo 1 > /proc/sys/vm/drop_caches"

To free dentries and inodes:
sudo sh -c "echo 2 > /proc/sys/vm/drop_caches"

To free pagecache, dentries and inodes:
sudo sh -c "echo 3 > /proc/sys/vm/drop_caches"

Hope this works for you all.

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