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Re: Testing Sandforce SSD - Mailing list pgsql-performance

From Greg Spiegelberg
Subject Re: Testing Sandforce SSD
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Msg-id AANLkTikSLLcUKdD=mZhN4MnSyUAvmgGqnmPCFKdmXbAJ@mail.gmail.com
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In response to Re: Testing Sandforce SSD  (Yeb Havinga <yebhavinga@gmail.com>)
Responses Re: Testing Sandforce SSD
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On Mon, Jul 26, 2010 at 10:26 AM, Yeb Havinga <yebhavinga@gmail.com> wrote:
Matthew Wakeling wrote:
Apologies, I was interpreting the graph as the latency of the device, not all the layers in-between as well. There isn't any indication in the email with the graph as to what the test conditions or software are.
That info was in the email preceding the graph mail, but I see now I forgot to mention it was a 8.4.4 postgres version.


Speaking of the layers in-between, has this test been done with the ext3 journal on a different device?  Maybe the purpose is wrong for the SSD.  Use the SSD for the ext3 journal and the spindled drives for filesystem?  Another possibility is to use ext2 on the SSD.

Greg

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