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From: Justin <justin@emproshunts.com>
To: Craig James <craig_james@emolecules.com>
Cc: Greg Smith <gsmith@gregsmith.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Benchmark: Dell/Perc 6, 8 disk RAID 10
Date: Mon, 17 Mar 2008 14:38:19 -0500
Message-ID: <47DEC8AB.8060608@emproshunts.com> (raw)
In-Reply-To: <47DEB978.2030307@emolecules.com>
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Craig James wrote:
> Justin wrote:
>>> 2000 tps ??? do you have fsync turned off ?
>>>
>>> Dave
>>>
>>
>> No its turned on.
>
> Unless I'm seriously confused, something is wrong with these numbers.  
> That's the sort of performance you expect from a good-sized RAID 10 
> six-disk array.  With a single 7200 rpm SATA disk and XFS, I get 640 
> tps.  There's no way you could 2000 tps from a single disk.
>
> Craig
>

it is a RAID 10 controller with 6 SAS 10K 73 gig drives.    The server 
is 3 weeks old now.

it has 16 gigs of RAM
2 quad core Xenon 1.88 Ghz processors
2 gig Ethernet cards. 
RAID controller perc 6/i with battery backup 512meg cache, setup not lie 
about fsync

WAL is on a RAID 0 drive along with the OS



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