Re: strange performance regression between 7.4 and 8.1

From: "Alex Deucher" <alexdeucher(at)gmail(dot)com>
To: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
Cc: "Jeff Frost" <jeff(at)frostconsultingllc(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: strange performance regression between 7.4 and 8.1
Date: 2007-03-02 01:47:19
Message-ID: a728f9f90703011747g6512a8d3p47c9cc2101e0b233@mail.gmail.com
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On 3/1/07, Joshua D. Drake <jd(at)commandprompt(dot)com> wrote:
> \
> >> Is the SAN being shared between the database servers and other
> >> servers? Maybe
> >> it was just random timing that gave you the poor write performance on
> >> the old
> >> server which might be also yielding occassional poor performance on
> >> the new
> >> one.
> >>
> >
> > The direct attached scsi discs on the old database server we getting
> > 45MBps not the SAN. The SAN got 62/145Mbps, which is not as bad.
>
> How many spindles you got in that SAN?

105 IIRC.

Alex

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