Date: Thu, 11 Jun 1998 10:51:29 +0100 From: Manar Hussain <manar@ivision.co.uk> To: "Andras Tudos - Computronic, C3" <andras.tudos@computronic.hu> Cc: isp@FreeBSD.ORG, marci@c3.hu Subject: Re: file system performance Message-ID: <3.0.5.32.19980611105129.00881530@stingray.ivision.co.uk> In-Reply-To: <3.0.5.32.19980611000210.00a868b0@computronic.hu>
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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. Manar To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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