From owner-freebsd-stable@FreeBSD.ORG Thu Dec 23 15:26:17 2004 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B110216A4CE for ; Thu, 23 Dec 2004 15:26:17 +0000 (GMT) Received: from avscan1.sentex.ca (avscan1.sentex.ca [199.212.134.11]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5D89743D55 for ; Thu, 23 Dec 2004 15:26:17 +0000 (GMT) (envelope-from mike@sentex.net) Received: from localhost (localhost.sentex.ca [127.0.0.1]) by avscan1.sentex.ca (8.12.11/8.12.11) with ESMTP id iBNFQGTZ053124; Thu, 23 Dec 2004 10:26:16 -0500 (EST) (envelope-from mike@sentex.net) Received: from avscan1.sentex.ca ([127.0.0.1]) by localhost (avscan1.sentex.ca [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 52390-07; Thu, 23 Dec 2004 10:26:16 -0500 (EST) Received: from lava.sentex.ca (pyroxene.sentex.ca [199.212.134.18]) by avscan1.sentex.ca (8.12.11/8.12.11) with ESMTP id iBNFQGXw053112; Thu, 23 Dec 2004 10:26:16 -0500 (EST) (envelope-from mike@sentex.net) Received: from simian.sentex.net (simeon.sentex.ca [192.168.43.27]) by lava.sentex.ca (8.12.11/8.12.11) with ESMTP id iBNFQ92A014773; Thu, 23 Dec 2004 10:26:09 -0500 (EST) (envelope-from mike@sentex.net) Message-Id: <6.2.0.14.0.20041223101407.1053a0e8@64.7.153.2> X-Mailer: QUALCOMM Windows Eudora Version 6.2.0.14 Date: Thu, 23 Dec 2004 10:26:44 -0500 To: Igor Robul , freebsd-stable@freebsd.org From: Mike Tancsa In-Reply-To: <41CAB1A9.9040903@speechpro.com> References: <41CAB1A9.9040903@speechpro.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Virus-Scanned: by amavisd-new X-Virus-Scanned: by amavisd-new at avscan1b Subject: Re: Poor performance with 3Ware 7506LP RAID X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Dec 2004 15:26:17 -0000 At 06:53 AM 23/12/2004, Igor Robul wrote: >Hello, >we have performance problem with 3Ware 7506LP RAID5. For example if we >execute rsync for large array of data, then >'systat -vmstat' shows 100% load on twed0, and many other processes wait >disk I/O. > >Also, which SATA RAID controller would you recomend for Samba/Courier-IMAP >server for company with 80 users? I think the 7xxx series is not so great for RAID5 speed wise. I know on our 7810, its lucky to get 15MB/s on block writes on 6 160G ST3160021A... I havent tested the 8xxx series in RAID5, but supposedly they are faster as is the 9000. But I dont know about the stability of the 9xxx series drivers (twe vs twa). If speed and reliability is what you want, look at RAID10. Our one mail server on RAID10 sees about 15-40 concurrent connections a second at peak times. With a lot of RAM and Maildir format, there is hardly any blocking going on. ---Mike >_______________________________________________ >freebsd-stable@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-stable >To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"