VM Tuning to enhance performance

Posted by Tiffany Walker on Server Fault See other posts from Server Fault or by Tiffany Walker
Published on 2012-11-14T04:21:13Z Indexed on 2012/11/14 5:01 UTC
Read the original article Hit count: 478

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linux

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webserver

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Performance

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web-hosting

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performance-tuning

vm.bdflush = 100 1200 128 512 15 5000 500 1884 2
vm.dirty_ratio = 20
vm.min_free_kbytes = 300000

That means that the MOST dirty data that can be in RAM is 20% and that there will always be 300MB RAM that linux CANNOT use to cache files right?

What I am trying to do is ensure that there is always room left for service to spawn and use RAM. I have 8GB of ram and hosting websites with PHP so I want to have more free RAM on stand by instead of seeing myself on 50MB of RAM free.

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