From owner-freebsd-isp Thu Jun 11 22:03:47 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id WAA00553 for freebsd-isp-outgoing; Thu, 11 Jun 1998 22:03:47 -0700 (PDT) (envelope-from owner-freebsd-isp@FreeBSD.ORG) Received: from xwin.webweaver.net (xwin.webweaver.net [208.138.29.35]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id WAA00535 for ; Thu, 11 Jun 1998 22:03:43 -0700 (PDT) (envelope-from nicole@xwin.webweaver.net) Received: (from nicole@localhost) by xwin.webweaver.net (8.8.8/8.8.7) id WAA09069; Thu, 11 Jun 1998 22:09:20 -0700 (PDT) (envelope-from nicole) Message-ID: X-Mailer: XFMail 1.2 [p0] on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii MIME-Version: 1.0 In-Reply-To: <3.0.5.32.19980611000210.00a868b0@computronic.hu> Date: Thu, 11 Jun 1998 22:09:20 -0700 (PDT) From: Nicole Harrington To: "Andras Tudos - Computronic, C3" Subject: RE: file system performance Cc: marci@c3.hu, isp@FreeBSD.ORG Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by hub.freebsd.org id WAA00543 Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On 10-Jun-98 Andras Tudos - Computronic, C3 wisely 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? > I am setting up a very similiar arrangement, except I have the machines mounting a network appliance device. To improve performance I am using a Packetengines G igabit nic cards and Hub to connect to the Netapp filer Their are drives availab le for FreeBSD. Glad to see someone else choosing qmail for it's abilities to work well over an NFS mounted environment. Nicole nicole@webweaver.net - http://www.webweaver.net/ webmistress@dangermouse.org - http://www.dangermouse.org/ ------------------------------------------------- -- Powered by Coka Cola and FreeBSD -- -- Stong enough for a man - But made for a Woman -- -- Microsoft: What bug would you like today? -- -- I tried an internal modem once, but it hurt when I walked -- --------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message