Re: bad performance on 3 of 20 boxes with 3ware card

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On Fri, Jul 31, 2009 at 3:02 PM, <david@xxxxxxx> wrote:
> I hae 20 identical boxes (2x 4-core cpus, 64G ram, 16x1TB SATA drives on
> 07:00.0 RAID bus controller: 3ware Inc 9650SE SATA-II RAID (rev 01) raid 6)
> running linux 2.6.30
>
> on 3 of the 20 I seem to have a max write speed of ~5MB/sec (as opposed to
>>
>> 100 MB/sec)
>
> any pointers on how I can identify what is different about these three
> boxes?

Do you have cache OFF on the 3 slow boxes ?

-Adam
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