Date: Wed, 6 May 2009 13:25:50 +0400 From: Anthony Pankov <ap00@mail.ru> To: Mark Wong <markwkm@gmail.com> Cc: freebsd-performance@freebsd.org Subject: Re: filesystem performance Message-ID: <5871156390.20090506132550@mail.ru> In-Reply-To: <70c01d1d0905042230v3357622cgf4c8e52a2a4ead96@mail.gmail.com> References: <70c01d1d0905042230v3357622cgf4c8e52a2a4ead96@mail.gmail.com>
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Hello Mark, May i ask a question while more expierenced people is waking up? I don't fully understand the target. For what filesystem should be optimized? I expect a patterns of recorded IO calls when pgsql perform typical operations with statistics and in-depth analysis. Are you sure there is à strong relation between fio benchmark result and PostgreSQL performance? Tuesday, May 05, 2009, 9:30:47 AM, you wrote: MW> Hi everyone, MW> We (PostgreSQL community) have a HP DL380 G5 that we were using to do MW> some very basic filesystem characterizations as part of a database MW> performance tuning project, so we wanted to give FreeBSD a try out of MW> the box. For this set of data we used 7.1. We're (us few that are MW> running the tests) are fairly unfamiliar with the community here, so MW> I'll be as brief as I can. We're basically wondering if the data MW> we're getting out of the box is expected, and any tuning guidelines MW> including what changes we should expect to see in the performance. -- Best regards, Anthony mailto:ap00@mail.ru
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