From owner-freebsd-bugs Thu Apr 22 23:52:36 1999 Delivered-To: freebsd-bugs@freebsd.org Received: from freefall.freebsd.org (freefall.FreeBSD.ORG [204.216.27.21]) by hub.freebsd.org (Postfix) with ESMTP id 9D64C15A46 for ; Thu, 22 Apr 1999 23:52:31 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.9.2/8.9.2) id XAA12331; Thu, 22 Apr 1999 23:50:01 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Date: Thu, 22 Apr 1999 23:50:01 -0700 (PDT) Message-Id: <199904230650.XAA12331@freefall.freebsd.org> To: freebsd-bugs@FreeBSD.org Cc: From: "Daniel C. Sobral" Subject: Re: kern/11266: Page fault, fatal trap in kernel Reply-To: "Daniel C. Sobral" Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org The following reply was made to PR kern/11266; it has been noted by GNATS. From: "Daniel C. Sobral" To: Nickolai Zeldovich Cc: FreeBSD-gnats-submit@FreeBSD.ORG Subject: Re: kern/11266: Page fault, fatal trap in kernel Date: Fri, 23 Apr 1999 08:46:48 +0900 Nickolai Zeldovich wrote: > > On Thu, 22 Apr 1999, Daniel C. Sobral wrote: > > > Maxusers 96 ought to be safe, but your problems looks like the > > mem/max problem, only at a very slow rate. The problem derives from > > the kernel taking up more memory than it has space to map. Since > > this is gradually used, it takes a while for the problem to show up. > > One week is a long while, so you might be a borderline case, because > > of your other options. I suggest lowering maxusers to 90, and see if > > that eliminates the problem, or make your machine survive a while > > longer. > > Well, at least I'm not the only one having the problem. I recompiled my > kernel without the MAXDSIZ and DFLDSIZ settings, lowering NMBCLUSTERS to > 2048 and setting maxusers to 90. The machine promptly crashed again, only > an hour after being rebooted with a new kernel. As you noted, NMBCLUSTERS might be too low. It is actually possible to crash the machine with now enough NMBCLUSTERS. Get a higher NMBCLUSTERS. Much higher. But keep maxusers at 90, just in case this crash is a new problem, and the former was caused by, indeed, mem/maxusers. -- Daniel C. Sobral (8-DCS) dcs@newsguy.com dcs@freebsd.org "Well, Windows works, using a loose definition of 'works'..." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message