From owner-freebsd-stable Thu Apr 16 13:24:44 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA21542 for freebsd-stable-outgoing; Thu, 16 Apr 1998 13:24:44 -0700 (PDT) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from set.spradley.tmi.net (set.spradley.tmi.net [207.170.107.99]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id UAA21530; Thu, 16 Apr 1998 20:24:32 GMT (envelope-from tsprad@set.spradley.tmi.net) Received: from localhost (set.spradley.tmi.net) [127.0.0.1] by set.spradley.tmi.net with esmtp (Exim 1.82 #2) id 0yPvCq-0005jD-00; Thu, 16 Apr 1998 15:24:24 -0500 X-Mailer: exmh version 2.0zeta 7/24/97 To: "Gary Palmer" cc: lrios , freebsd-stable@FreeBSD.ORG Subject: Re: FreeBSD and Sendmail In-reply-to: Your message of "Thu, 16 Apr 1998 16:09:15 EDT." <7506.892757355@gjp.erols.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 16 Apr 1998 15:24:23 -0500 From: Ted Spradley Message-Id: Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk Are your disk drives busy? Or are they 90% idle, too? > lrios wrote in message ID > : > > I'm currently running FreeBSD 2.2.5 on a Pentium II 266mhz machine with > > 256M ram and finding performace issues with Sendmail.. I've placed much > > load on this machine and found that I can old get about 200 emails per > > minute.. Just for comparison I did that same on a Linux machine running a > > 75 mhz Pentium and 32 mb ram and found that it could put about 500 per > > minute. I also found that the pentium two barely took a breath while the > > linux machine was at 20% idle (not a suprise).. Is that because of > > different memory managers or some type of kernel config?? Any ideas would > > be greatly appreciated... > > Filesystem differences. From memory, Linux has a default of doing > `async' writes, meaning that file data is flushed out as written (or close > enough), while the metadata is flushed by sync. This allows a drastic > speed difference as the disk heads are not having to do as many seeks > (one to the file data, one to the file metadata, etc) per write. > Try mounting your queuedir async and see if that helps > > (mount -o async -u /filesystem ) > > 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-stable" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message