Date: Thu, 11 Jun 1998 12:51:47 +0200 From: "Andras Tudos - Computronic, C3" <andras.tudos@computronic.hu> To: Manar Hussain <manar@ivision.co.uk> Cc: isp@FreeBSD.ORG, marci@c3.hu Subject: Re: file system performance Message-ID: <3.0.5.32.19980611125147.00ab3630@computronic.hu> In-Reply-To: <3.0.5.32.19980611105129.00881530@stingray.ivision.co.uk> References: <3.0.5.32.19980611000210.00a868b0@computronic.hu>
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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
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