From owner-freebsd-isp  Thu Jun 11 02:55:39 1998
Return-Path: <owner-freebsd-isp@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id CAA03043
          for freebsd-isp-outgoing; Thu, 11 Jun 1998 02:55:39 -0700 (PDT)
          (envelope-from owner-freebsd-isp@FreeBSD.ORG)
Received: from stingray.ivision.co.uk (stingray.ivision.co.uk [195.50.91.40])
          by hub.freebsd.org (8.8.8/8.8.8) with SMTP id CAA02179
          for <isp@freebsd.org>; Thu, 11 Jun 1998 02:52:52 -0700 (PDT)
          (envelope-from manar@ivision.co.uk)
Received: from pretender.ivision.co.uk [195.50.91.43] 
	by stingray.ivision.co.uk with smtp (Exim 1.62 #2)
	id 0yk427-0001wi-00; Thu, 11 Jun 1998 10:52:36 +0100
Message-Id: <3.0.5.32.19980611105129.00881530@stingray.ivision.co.uk>
X-Sender: manarpop@stingray.ivision.co.uk
X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32)
Date: Thu, 11 Jun 1998 10:51:29 +0100
To: "Andras Tudos - Computronic, C3" <andras.tudos@computronic.hu>
From: Manar Hussain <manar@ivision.co.uk>
Subject: Re: file system performance
Cc: isp@FreeBSD.ORG, marci@c3.hu
In-Reply-To: <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 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