Re: Benchmark: Dell/Perc 6, 8 disk RAID 10

From: Dave Cramer <pg(at)fastcrypt(dot)com>
To: Justin <justin(at)emproshunts(dot)com>
Cc: Greg Smith <gsmith(at)gregsmith(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Benchmark: Dell/Perc 6, 8 disk RAID 10
Date: 2008-03-16 11:25:41
Message-ID: F38ADB71-8F77-41C8-9066-488FFCA7BD67@fastcrypt.com
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On 16-Mar-08, at 2:19 AM, Justin wrote:

>
> I decided to reformat the raid 10 into ext2 to see if there was any
> real big difference in performance as some people have noted here
> is the test results
>
> please note the WAL files are still on the raid 0 set which is still
> in ext3 file system format. these test where run with the fsync as
> before. I made sure every thing was the same as with the first test.
>
This is opposite to the way I run things. I use ext2 on the WAL and
ext3 on the data. I'd also suggest RAID 10 on the WAL it is mostly
write.

Dave

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