From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 2 Oct 2000 12:51:42 -0300 (BRST) From: Rik van Riel Subject: Re: [PATCH] fix for VM test9-pre7 In-Reply-To: <39D87F3A.7D21E18@mountain.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII Content-ID: Sender: owner-linux-mm@kvack.org Return-Path: To: Tom Leete Cc: linux-mm@kvack.org, Linus Torvalds List-ID: On Mon, 2 Oct 2000, Tom Leete wrote: > I ran lmbench on test9-pre7 with and without the patch. > > Test machine was a slow medium memory UP box: > Cx586@120Mhz, no optimizations, 56M > > I still experience instability on this machine with both the > patched and vanilla kernel. It usually takes the form of > sudden total lockups, but on occasion I have seen oops + > panic at boot. If you could decode the oops or mail us the panic, we might find out if this is a VM related problem or not... > This summary doesn't show any performance advantage to the > patch, but the detailed plots show that memory access > latency degrades more gracefully wrt array size. That's because this benchmark has a very artificial page access pattern, that doesn't really benefit from any kind of page replacement. ;) regards, Rik -- "What you're running that piece of shit Gnome?!?!" -- Miguel de Icaza, UKUUG 2000 http://www.conectiva.com/ http://www.surriel.com/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/