From owner-freebsd-performance@FreeBSD.ORG Fri May 20 22:13:49 2005 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 04DA216A4CE for ; Fri, 20 May 2005 22:13:49 +0000 (GMT) Received: from hadar.amcc.com (hadar.amcc.com [192.195.69.168]) by mx1.FreeBSD.org (Postfix) with ESMTP id 99FE943DB7 for ; Fri, 20 May 2005 22:13:47 +0000 (GMT) (envelope-from vkashyap@amcc.com) Received: from mailhost01.amcc.com ([192.195.69.30]) by hadar.amcc.com (Netscape Messaging Server 4.15) with SMTP id IGT72S02.C5S; Fri, 20 May 2005 15:13:40 -0700 Received: (from vkashyap-pc [10.66.13.13]) by mailhost01.amcc.com (SMSSMTP 4.0.0.59) with SMTP id M2005052015141125801 ; Fri, 20 May 2005 15:14:12 -0700 From: "Vinod Kashyap" To: Alexis Yushin , freebsd-performance@freebsd.org Date: Fri, 20 May 2005 15:13:06 -0700 X-Sent-Folder-Path: Sent Items X-Mailer: Oracle Connector for Outlook 9.0.4 51114 (9.0.6627) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Message-ID: Subject: RE: Bad 3ware 9000 performance 5.4? X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 May 2005 22:13:49 -0000 > -----Original Message----- > From: owner-freebsd-performance@freebsd.org > [mailto:owner-freebsd-performance@freebsd.org]On Behalf Of = > Alexis Yushin > Sent: Thursday, May 19, 2005 8:14 PM > To: freebsd-performance@freebsd.org > Subject: Bad 3ware 9000 performance 5.4? > = > = > Hi, > = > I've been browsing through the mailing list archive, but = > could not find the > answer/conclusion/solution to this... > = > Running FreeBSD 5.4... three machines with twe/3ware 8000 and = > three twa/ > 3ware 9500-8 controllers. All of them running RAID 1+0 = > without write cache > since we dont have battery backup unit. All of them Seagate 7200 SATA. > = > I get about 46Mb/s write on the 8000 series and only 5(!)MB/s = > on the 9500 series. > = > How is this possible? Machines are in production so I can do = > very little > testing... Any ideas? > = You have to have write caching enabled to get better write performance. If you see bad numbers even with caching enabled, check to see if all drives/cables are ok. > = > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to = > "freebsd-performance-unsubscribe@freebsd.org" >