Date: Wed, 6 May 2009 08:02:59 -0700 From: Mark Wong <markwkm@gmail.com> To: Florian Smeets <flo@kasimir.com> Cc: freebsd-performance@freebsd.org, Selena Deckelmann <selenamarie@gmail.com>, Gabrielle Roth <gorthx@gmail.com> Subject: Re: filesystem performance Message-ID: <70c01d1d0905060802y3eeb80c7m59451d29d99ae7cc@mail.gmail.com> In-Reply-To: <4A019C24.6010804@kasimir.com> References: <70c01d1d0905042230v3357622cgf4c8e52a2a4ead96@mail.gmail.com> <4A019C24.6010804@kasimir.com>
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On Wed, May 6, 2009 at 7:18 AM, Florian Smeets <flo@kasimir.com> wrote: > On 05.05.09 07:30, Mark Wong wrote: >> >> Hi everyone, >> >> We (PostgreSQL community) have a HP DL380 G5 that we were using to do >> some very basic filesystem characterizations as part of a database >> performance tuning project, so we wanted to give FreeBSD a try out of >> the box. =A0For this set of data we used 7.1. =A0We're (us few that are >> running the tests) are fairly unfamiliar with the community here, so >> I'll be as brief as I can. =A0We're basically wondering if the data >> we're getting out of the box is expected, and any tuning guidelines >> including what changes we should expect to see in the performance. >> > > I guess you are using the ciss driver in this box? There was a performanc= e > regression in this driver in 7.1. This should be fixed in 7.2, which came > out recently. It is believed that you should get a whole lot better IO > performance with 7.2 if you are using the ciss driver. > > From the 7.2 release notes: > > A bug in the ciss(4) driver which caused low =93max device openings=94 co= unt and > led to poor performance has been fixed. We'll have to make time to try that. :) Thanks (and to the others) for pointing that out. Regards, Mark
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