From owner-freebsd-smp@FreeBSD.ORG Sat Jun 2 07:51:04 2007 Return-Path: X-Original-To: freebsd-smp@freebsd.org Delivered-To: freebsd-smp@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 008BA16A421 for ; Sat, 2 Jun 2007 07:51:04 +0000 (UTC) (envelope-from chrcoluk@gmail.com) Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.171]) by mx1.freebsd.org (Postfix) with ESMTP id 64D3E13C448 for ; Sat, 2 Jun 2007 07:51:03 +0000 (UTC) (envelope-from chrcoluk@gmail.com) Received: by ug-out-1314.google.com with SMTP id u2so416634uge for ; Sat, 02 Jun 2007 00:51:02 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=tRi0N75zfb9avZtMNGgkwYM0elMlCtQ9plt+i3qhxWdqTZZErrNEZs/OlTMSb3lGqEsd4ssNP4oPXgV737xlbdw8aolZdc5kHyMvyxP1mBfyW9pvtFteJXQOopmeZAzfveHxdNDViK3v4TspqTLEJ3WesomoSxdvoW3lM8peT90= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=ez7OcUSHoQWMO4DuSwvx3VlMF2Wi/6fQxuEQ3cL23W3O6MVWH3kEHoFEO0kniL+7kEOonYOrQqzlHmzrz+CDw4YXA4gIjQmQdF20gH/1CXHzgJGpZOq6qOEOqSlFru3vaVP5R3IshS9EtDEB36lUL+wGGSvKsf38aekTDdZ3QZI= Received: by 10.67.115.19 with SMTP id s19mr1382279ugm.1180770662271; Sat, 02 Jun 2007 00:51:02 -0700 (PDT) Received: by 10.67.24.16 with HTTP; Sat, 2 Jun 2007 00:51:02 -0700 (PDT) Message-ID: <3aaaa3a0706020051v4df04911gf1a91ee59fbeb2e2@mail.gmail.com> Date: Sat, 2 Jun 2007 08:51:02 +0100 From: Chris To: Paul In-Reply-To: <20070529114527.8B7421B8F@fep7.cogeco.net> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <00b301c785b9$0bc9b180$b6db87d4@multiplay.co.uk> <20070424021553.GA4224@xor.obsecurity.org> <20070424025031.F0841AE5@fep1.cogeco.net> <20070424035249.GA5598@xor.obsecurity.org> <3aaaa3a0705050423x72b78952wfd530a492c9cea14@mail.gmail.com> <20070523145728.F040562B@fep2.cogeco.net> <3aaaa3a0705271620g1fc39b84ua539c8daf194c065@mail.gmail.com> <20070528193726.2B0FE1242@fep7.cogeco.net> <3aaaa3a0705281345k7e3244e8v75e42f3d55884b00@mail.gmail.com> <20070529114527.8B7421B8F@fep7.cogeco.net> Cc: freebsd-smp@freebsd.org Subject: Re: System Cpu Between 50-70% and need to find out why X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD SMP implementation group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Jun 2007 07:51:04 -0000 On 29/05/07, Paul wrote: > At 04:45 PM 28/05/2007, Chris wrote: > >On 28/05/07, Paul wrote: > >> > >> > > >> >I will run tests on a local box but I cant be toggling the kernels on > >> >my production servers. > >> > > >> >Thanks > >> > > >> >Chris > >> > >>Hi Chris, > >> > >>So have you removed the QUOTA feature from your production boxes? I > >>am curious what you did here to get things working on the stable 6.2? > >> > >>I am amazed more people are not having an issue with this. > >> > >>Thanks > >> > >>Paul > >> > >no I use QUOTA but put up with the performance hit, all my production > >servers are dual core now and new ones will be core 2 duos so I work > >round it with raw power, also using SATA hds instead of PATA. I dont > >use QUOTA on every single server tho, just the commercial web servers. > > > >Chris > > Thanks for your reply. > > That is odd as I used two Dual Core CPUS (4 in total) XEON 64 with 16 > GIG of RAM and SATA HD on the amd64 branch with a very fast Areca > controller and the hit was so bad that the system was not usable at > all. It was like going back to a 386 (or beyond that). > > Did you provide any mail services on that server? I have a hunch it > was the multiple instant access to many files that was causing the > slowdown (50-100 of small file reads and writes per second). If you > only provided FTP type access then that may not have been as big of > an issue as you may not have had as many concurrent file writes. > > Thanks > > Paul > > email/www/ftp all provided using a commercial control panel solution to manage it all, but the commercial servers are a mix of light to medium users and I dont think anyone is stressing the email systems a lot, they all do anti spam and anti virus as well on emails. I have one server that is very heavy usage but has QUOTA disabled as its dedicated to one domain only and not needed to use hd quotas. Chris