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  1. #1
    Join Date
    Jun 2001

    Am I right in thinking my RAM usage is ok?


    I hope someone can help me with this.

    If I run 'free' I can see the following:

    [email protected] [~]# free
                    total           used          free        shared  buffers     cached
    Mem:       8177624    8113900     63724          0     341652    6760596
    -/+ buffers/cache:     1011652    7165972
    Swap:     10233364   4               10233360
    However if I run 'vmstat -aS' I can see the following:

    [email protected] [~]# vmstat -aS
    procs -----------memory------------------- -  -swap-- ----io----  --system-- -----cpu------
     r  b   swpd   free     inact         active        si   so    bi    bo   in   cs us sy id wa st
     0  0         4  69764  6321324  1050128    0    0     6    25   10   25  0  0 99  0  0
    Am I right in thinking this means although nearly all my RAM is being used, it's mostly just cached unimportant stuff which will be cleared should I actually need to use the RAM?

    If so, is this an efficient way to run a server or is there a way to configure it not to do so much caching?

    Any advice appreciated.


  2. #2
    Join Date
    Mar 2009
    Gods Own Country
    The Linux kernel likes to cache agressively in order to perform well. This is perfectly normal, and not anything to worry about. What it caches are contents in disk that will likely be used by your currently running applications.
    Fabin Mundattil @ Xieles Support
    High Quality Server Management | support @

  3. #3
    Join Date
    Jun 2001
    Thank you.

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