Date: Thu, 16 Apr 1998 15:24:23 -0500 From: Ted Spradley <tsprad@set.spradley.tmi.net> To: "Gary Palmer" <gpalmer@FreeBSD.ORG> Cc: lrios <lrios@ziplink.net>, freebsd-stable@FreeBSD.ORG Subject: Re: FreeBSD and Sendmail Message-ID: <E0yPvCq-0005jD-00@set.spradley.tmi.net> In-Reply-To: Your message of "Thu, 16 Apr 1998 16:09:15 EDT." <7506.892757355@gjp.erols.com>
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Are your disk drives busy? Or are they 90% idle, too? > lrios wrote in message ID > <Pine.BSF.3.96.980415122128.1928A-100000@zip1.ziplink.net>: > > 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
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