From owner-freebsd-isp Thu Jun 11 03:52:04 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id DAA16076 for freebsd-isp-outgoing; Thu, 11 Jun 1998 03:52:04 -0700 (PDT) (envelope-from owner-freebsd-isp@FreeBSD.ORG) Received: from ntserver.computronic.hu (ntserver.computronic.hu [194.149.43.67]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id DAA15972 for ; Thu, 11 Jun 1998 03:51:51 -0700 (PDT) (envelope-from andras.tudos@computronic.hu) Received: from andras-pc (andras-pc.computronic.hu [194.149.43.68]) by ntserver.computronic.hu (Post.Office MTA v3.1.2 release (PO205-101c) ID# 0-44403U100L100S0) with SMTP id AAA454; Thu, 11 Jun 1998 12:51:47 +0200 Message-Id: <3.0.5.32.19980611125147.00ab3630@computronic.hu> X-Sender: andras.tudos@computronic.hu X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Thu, 11 Jun 1998 12:51:47 +0200 To: Manar Hussain From: "Andras Tudos - Computronic, C3" Subject: Re: file system performance Cc: isp@FreeBSD.ORG, marci@c3.hu In-Reply-To: <3.0.5.32.19980611105129.00881530@stingray.ivision.co.uk> References: <3.0.5.32.19980611000210.00a868b0@computronic.hu> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org At 10:51 98.06.11 +0100, you wrote: >At 00:02 11/06/98 +0200, Andras Tudos - Computronic, C3 wrote: >>We are setting up a largish qmail based mail server. We are using 3 >>frontend machines (PII-233, 128Mb, FreeBSD 2.2.6) to accept incoming smtp >>mail and to service pop3 user requests. The mailboxes are on the backend >>machine (PII-400, 128Mb, FreeBSD 2.2.6, external HW RAID array on UW SCSI) >>and are shared via NFS. All PCs are on a 100Mbps switched LAN. >> >>The problem: file system performance (either measured over NFS or on the >>local RAID array). We can get 1.6Mbps when continuosly copying 1-2K files >>and 44Mbps when copying (dd) /dev/zero. The later is perfect, but the >>former is too low. We tried almost all options (sync and async mode), but >>couldn't get it higher. With this performance the server can deliver about >>700,000 messages per day (measured with simulated mail load), which is less >>than required (on long term). >> >>Any ideas how to improve performance? > >http://www.netapp.com - *very* cool boxes - very fast, very professional >with lots of nice feaures. > But extremely expensive compared to our budget as far as I know... :( How do they compare to a self built PII-400, UW SCSI, 45 Gb ext. RAID with CMD controller? Andras Tudos C3, Budapest To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message