From owner-freebsd-isp Wed Mar 10 23:12:10 1999 Delivered-To: freebsd-isp@freebsd.org Received: from gjp.erols.com (alex-va-n008c079.moon.jic.com [206.156.18.89]) by hub.freebsd.org (Postfix) with ESMTP id D47AB150D3; Wed, 10 Mar 1999 23:12:05 -0800 (PST) (envelope-from gjp@gjp.erols.com) Received: from gjp.erols.com (localhost.erols.com [127.0.0.1]) by gjp.erols.com (8.9.1/8.8.7) with ESMTP id CAA72646; Thu, 11 Mar 1999 02:11:39 -0500 (EST) (envelope-from gjp@gjp.erols.com) X-Mailer: exmh version 2.0.1 12/23/97 To: Mark Conway Wirt Cc: Haifeng Guo , freebsd-questions@FreeBSD.ORG, freebsd-isp@FreeBSD.ORG From: "Gary Palmer" Subject: Re: Mail server setup In-reply-to: Your message of "Thu, 04 Mar 1999 10:39:44 EST." <19990304103944.F29262@intrepid.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 11 Mar 1999 02:11:39 -0500 Message-ID: <72642.921136299@gjp.erols.com> Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Mark Conway Wirt wrote in message ID <19990304103944.F29262@intrepid.net>: > Are you delivering to hashed spool files? That make a lot of differnce > on a large machine, from what I hear..... A hierarichal mail spool layout has a tremendous impact on a UFS based mail spool as you no longer have to do a linear search of /var/mail to find recently added mailboxes (translation: you do more directory lookups, and more syscalls, but you end up eating way less cpu) If you're running under something like VXFS, then its probably still a win, but VXFS indexes its directories, so its not so clear to me that hashing is needed for doing plain lookups (although `ls' would still suck :) ) Gary -- Gary Palmer FreeBSD Core Team Member FreeBSD: Turning PC's into workstations. See http://www.FreeBSD.ORG/ for info To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message