From owner-freebsd-questions@FreeBSD.ORG Thu Apr 6 10:29:38 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 96F9C16A422 for ; Thu, 6 Apr 2006 10:29:38 +0000 (UTC) (envelope-from ericd@free.fr) Received: from meteor.synten.com (ns4.synten.com [193.47.141.42]) by mx1.FreeBSD.org (Postfix) with ESMTP id 908D343D55 for ; Thu, 6 Apr 2006 10:29:37 +0000 (GMT) (envelope-from ericd@free.fr) Received: from Eric (ericd.netvigie.com [81.255.196.158]) by meteor.synten.com (8.13.2/8.12.9) with SMTP id k36ATYHc026111 for ; Thu, 6 Apr 2006 12:29:34 +0200 Message-ID: <005601c65964$fee303d0$65fd24c0@Eric> From: "Eric" To: References: <002c01c649a2$dd40d120$65fd24c0@Eric><20060317172455.GA27140@xor.obsecurity.org><000f01c651d2$a5425e50$65fd24c0@Eric> <20060327192207.GB70942@xor.obsecurity.org> Date: Thu, 6 Apr 2006 12:29:33 +0200 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-SYNTEN-MailScanner-Information: Please contact the ISP for more information X-SYNTEN-MailScanner: Found to be clean X-SYNTEN-MailScanner-SpamScore: ss Subject: RESOLVED : Low perf of i386 6.0 on dell poweredge 1850 bi-Xeon2.8ghzDualCore X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 06 Apr 2006 10:29:38 -0000 Hi, I'm comming back with solution to my problem. In fact solution was to disable any cache on perc4 controller. I do this at the beginning but with perc4 controller it doesn't seems to be effective unless you delete everything and put good configuration when creating the logical drive and on more time in configuration mode. Difference for high msql utilisation is server running near two time quickly. Still don't know why it was so more visible with smp. For information perc4 configuration is : On creation and on configuration : Write Policy --> Writethru Read Policy --> non-adaptive Eric. > On Thu, Mar 09, 2006 at 04:19:15PM +0100, Eric D'HEM wrote: > >Mail NETvigieHi, > > > >I buy a new DELL PowerEdge 1850 with Bi-Xeon 2.8GHZ/2*2MB Dual Core > >800FSB > >processor, 2Go DDR2 RAM, PERC4di RAID controller with 2 SCSI U320 > >15.000tpm > >36Go hdd on RAID1. > > > >I install on it Freebsd 6.0, apache 2.2.0 and mysql 4.1.18 and compare > >performance with : > > > >OLD PowerEDge with only simple Bi-Xeon 3.0 GHZ and freebsd 4.11. > > > >Result is that web and local databases query are +- 4 times slower with > >freebsd 6.0 and dual-core. > > > >I try with and without smp and threaded kernel and results are same. > >I came back to Generic kernel to see if it come from my kernel > >configuration but result was same. >