From owner-freebsd-hackers Mon Oct 11 15:10: 0 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from backup.af.speednet.com.au (af.speednet.com.au [202.135.188.244]) by hub.freebsd.org (Postfix) with ESMTP id 12F5B15B32 for ; Mon, 11 Oct 1999 15:09:56 -0700 (PDT) (envelope-from andyf@speednet.com.au) Received: from localhost (localhost [127.0.0.1]) by backup.af.speednet.com.au (8.9.3/8.9.3) with ESMTP id IAA06978; Tue, 12 Oct 1999 08:09:40 +1000 (EST) (envelope-from andyf@speednet.com.au) Date: Tue, 12 Oct 1999 08:09:40 +1000 (EST) From: Andy Farkas X-Sender: andyf@localhost To: Steven Ames Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: aio_read kills machine In-Reply-To: <199910112202.RAA04761@virtual-voodoo.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, 11 Oct 1999, Steven Ames wrote: > Could someone define what NMBCLUSTERS is and what it is used for? I've > seen a lot of cases where increasing it (beyond the default 1024?) has > helped systems be more stable, but what is it? > Here is an informative email from David Greenman: ----snip---- From dg@root.com Tue Oct 12 08:07:20 1999 Date: Mon, 17 May 1999 18:58:06 -0700 From: David Greenman To: Nicole Harrington Cc: stable@FreeBSD.ORG, Brian Behlendorf Subject: Re: maxusers/nmbclusters > I have read that if you have needs that would require turning up NMBclusters, >and certain sysctl options, etc, that you should do so independantly and not >increase maxusers up much above 256. Will that recomendation change with 3.2 as >well? If you specify NMBCLUSTERS, then you only need to tune maxusers for increased number of processes (nproc = 16 * maxusers). This is true in all versions of FreeBSD. -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project - http://www.freebsd.org Creator of high-performance Internet servers - http://www.terasolutions.com ----snip---- > -Steve > -- :{ andyf@speednet.com.au Andy Farkas System Administrator Speednet Communications http://www.speednet.com.au/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message