From owner-freebsd-hackers Thu Nov 20 18:41:20 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id SAA03505 for hackers-outgoing; Thu, 20 Nov 1997 18:41:20 -0800 (PST) (envelope-from owner-freebsd-hackers) Received: from dyson.iquest.net (dyson.iquest.net [198.70.144.127]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id SAA03497 for ; Thu, 20 Nov 1997 18:41:15 -0800 (PST) (envelope-from toor@dyson.iquest.net) Received: (from root@localhost) by dyson.iquest.net (8.8.7/8.8.8) id VAA00867; Thu, 20 Nov 1997 21:41:10 -0500 (EST) (envelope-from toor) From: "John S. Dyson" Message-Id: <199711210241.VAA00867@dyson.iquest.net> Subject: Re: Nope, didn't fix it.Re: Serious performance issue with 2.2.5-RELEASE In-Reply-To: from Jaye Mathisen at "Nov 20, 97 05:05:49 pm" To: mrcpu@cdsnet.net (Jaye Mathisen) Date: Thu, 20 Nov 1997 21:41:10 -0500 (EST) Cc: toor@dyson.iquest.net, hackers@freebsd.org X-Mailer: ELM [version 2.4ME+ PL31 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Jaye Mathisen said: > > OK, I handpatched the source, built a new kernel, and fired it up again. > > If anything, it's worse than before, hanging up within seconds of > rebooting. > Hmmmm... The original modification of the code was a mistake. getnewbuf is supposed to return if it blocks. > > I'm dropping back to the previous version for now, but this pretty well > kills 2.2.5 for me for usability. > Ouch! At least you have a plan B. > > I notice now that a lot of processes seem to be in vmwait, when they > didn't used to show it. > > Heck, I just had a la spike of 480. Machine kept running, but it was > unable to serve files for 2-3 minutes. > Whoa!!! Bring in the vm_page fix from RELENG_2_2 !!! It could be another manifestation of the page queue management bug!!! John