From owner-freebsd-performance@FreeBSD.ORG Wed May 6 15:03:01 2009 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0DE6F10656CA for ; Wed, 6 May 2009 15:03:01 +0000 (UTC) (envelope-from markwkm@gmail.com) Received: from yx-out-2324.google.com (yx-out-2324.google.com [74.125.44.28]) by mx1.freebsd.org (Postfix) with ESMTP id B978C8FC1F for ; Wed, 6 May 2009 15:03:00 +0000 (UTC) (envelope-from markwkm@gmail.com) Received: by yx-out-2324.google.com with SMTP id 8so82537yxb.13 for ; Wed, 06 May 2009 08:03:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=4mroSo0i1g5nDK7VkOQCoFPUjMHotzKBr7kQWlojmZA=; b=YhYu9uelBnitq4m2+Ku2Wcm8d8yMoaPjCA24xln77NY2J1xUMZiNAhzkITcurT/YFv rqBA+uMC4UYP3VFmvLj070ioNhsL5P+ztXsIZwApz5m4x0AM1TcMBsN4qRzdRaS1sUei NoFEp5Qx65n1fSZhs6lxsGPC9n6KrxlkXjRuQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=n06LCmGWwQvEaQ15x9WfFh1VMTsEpwDm0d/H0kSFsy3LnSWd6rqPfWTU7Z+86s+3YQ pqfsSmj/fxYZvsX2fQAF/Sy30B/rtSR7Wdg+Ba2kLhEstKRmdFzR5h2nAo2yyhRwke0F EKR23iBX8GYxzn8uhRQgBkgSSWPHrEXPC4F3Y= MIME-Version: 1.0 Received: by 10.100.178.9 with SMTP id a9mr3117848anf.11.1241622179972; Wed, 06 May 2009 08:02:59 -0700 (PDT) In-Reply-To: <4A019C24.6010804@kasimir.com> References: <70c01d1d0905042230v3357622cgf4c8e52a2a4ead96@mail.gmail.com> <4A019C24.6010804@kasimir.com> Date: Wed, 6 May 2009 08:02:59 -0700 Message-ID: <70c01d1d0905060802y3eeb80c7m59451d29d99ae7cc@mail.gmail.com> From: Mark Wong To: Florian Smeets Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Cc: freebsd-performance@freebsd.org, Selena Deckelmann , Gabrielle Roth Subject: Re: filesystem performance X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 May 2009 15:03:01 -0000 On Wed, May 6, 2009 at 7:18 AM, Florian Smeets 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