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

[Luis Freitas]

Hi,
   
      This particular server is 2.6.9-34.ELsmp (RedHat 4.0) as this is our production cluster and we did not update it recently.
   
  Regards,
  Luis

Sunil Mushran <Sunil.Mushran at oracle.com> wrote:
  Hmmm... the last time I saw your numbers, ocfs2's foot print was 15M.
You'll have to do better than that.

Anycase, Luis problem is the relationship between swap and cached buffers.
Which kernel is this?

John Lange wrote:
> It seems that ocfs has an unfixed memory leak even in the most recent
> version.
>
> I hope to make a more detailed bug report on Monday.
>
> John
>
> On Fri, 2007-02-23 at 15:31 -0800, Luis Freitas wrote:
> 
>> 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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>
>
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