[Ocfs2-users] High on buffers and deep on swap

[Brian Sieler]

Luis, yes I am experiencing what appears to be a similar problem you are
describing. See my post from just a few minutes ago on another thread.

 

I run a 2-node cluster with OCFS2/RAC on 2.6.9-34.0.2.ELsmp (RHEL 4.0) as
well.

 

             total       used       free     shared    buffers     cached

Mem:       4044496    4005516      38980          0      34108    2236636

-/+ buffers/cache:    1734772    2309724

Swap:      2097144     648244    1448900

 

If you've uncovered anything since posting this message, please pass it
along?

 

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From: ocfs2-users-bounces at oss.oracle.com
[mailto:ocfs2-users-bounces at oss.oracle.com] On Behalf Of Luis Freitas
Sent: Friday, February 23, 2007 5:32 PM
To: ocfs2-users at oss.oracle.com
Subject: [Ocfs2-users] High on buffers and deep on swap

 

Hi,

 

   This is a bit off topic, hope there is not a problem.

 

   Anyone out there experiencing high swapping with the kernel retaining a
large amount of buffers? This used to be a problem on 2.4, and I usually
changed /proc/sys/vm/freepages to fix it. But on 2.6 this parameter no
longer exists.

 

    One of the servers here is holding over 3.5Gb of cache even when using
over 700Mb of swap, and free memory is always low.

 

[oracle at br001sv0432 ~]$ free
             total       used       free     shared    buffers     cached
Mem:       5190736    4810880     379856          0     143032    3583868
-/+ buffers/cache:    1083980    4106756
Swap:      2048248     723064    1325184
[oracle at br001sv0432 ~]$

   I am tuning /proc/sys/vm/swappiness, but this seems to have no effect at
all. Changed from 60 to 10 and seems to have no effect. The server runs
Oracle RAC with OCFS2.

 

Regards,

Luis

 

 

  

  _____  

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