From owner-freebsd-isp@FreeBSD.ORG Thu May 8 11:35:54 2003 Return-Path: Delivered-To: freebsd-isp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E937137B425 for ; Thu, 8 May 2003 11:35:52 -0700 (PDT) Received: from psknet.com (grant.psknet.com [63.171.251.10]) by mx1.FreeBSD.org (Postfix) with SMTP id DE3E943FAF for ; Thu, 8 May 2003 11:35:51 -0700 (PDT) (envelope-from troy@psknet.com) Received: (qmail 35992 invoked by uid 85); 8 May 2003 18:35:51 -0000 Received: from troy@psknet.com by grant.psknet.com by uid 25 with qmail-scanner-1.16 (no such scanner Clear:. Processed in 0.292976 secs); 08 May 2003 18:35:51 -0000 Received: from dilbert.psknet.com (HELO dilbert) (63.171.251.35) by tc.psknet.com with SMTP; 8 May 2003 18:35:50 -0000 From: "Troy Settle" To: Date: Thu, 8 May 2003 14:35:50 -0400 Message-ID: <000001c31590$a65c3300$23fbab3f@psknet.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2616 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: Virus Scanning X-BeenThere: freebsd-isp@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Internet Services Providers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 May 2003 18:35:55 -0000 I'm trying to figure out the best approach to handle virus scanning on my new mail server. The machine itself is a beast: Dual Xeon 2.4GHZ (HT) 4GB RAM U160 RAID1 (system) U160 RAID5 (storage) Originally, I was thinking that handling the virus scanning on a memory file system would be best to keep disk IO to a minimum, however, I'm unable to demonstrate the mfs is any faster than a real disk, even when copying 200MB files. This is probably due to softupdates. So, with softupdates enabled, is there any real disk IO if an email message (and it's attachments) are extracted, written, scanned, and deleted within a few hundred milliseconds? Would there be any real advantage to performing these operations on a memory filesystem? TIA, -- Troy Settle Pulaski Networks http://www.psknet.com 540.994.4254 - 866.477.5638