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Re: H800 + md1200 Performance problem

From: Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
To: Cesar Martin <cmartinp(at)gmail(dot)com>
Cc: Merlin Moncure <mmoncure(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: H800 + md1200 Performance problem
Date: 2012-04-04 18:55:51
Message-ID: CAOR=d=1rO0npOPe=0EYBPk=LEdm_UVP+CT68YxSn7tyB-pfxbw@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-performance
On Wed, Apr 4, 2012 at 12:46 PM, Cesar Martin <cmartinp(at)gmail(dot)com> wrote:
> Raid controller issue or driver problem was the first problem that I
> studied.
> I installed Centos 5.4 al the beginning, but I had performance problems, and
> I contacted Dell support... but Centos is not support by Dell... Then I
> installed Redhat 6 and we contact Dell with same problem.
> Dell say that all is right and that this is a software problem.
> I have installed Centos 5.4, 6.2 and Redhat 6 with similar result, I think
> that not is driver problem (megasas-raid kernel module).
> I will check kernel updates...
> Thanks!

Look for firmware updates to your RAID card.

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