From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 4 Oct 2000 12:14:07 -0300 (BRST) From: Rik van Riel Subject: Re: Odd swap behavior In-Reply-To: <39DA787E.B31422B4@sgi.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Rajagopal Ananthanarayanan Cc: linux-mm@kvack.org List-ID: On Tue, 3 Oct 2000, Rajagopal Ananthanarayanan wrote: > I'm running fairly stressful tests like dbench with lots of > clients. Since the new VM changes (now in test9), I haven't > noticed _any_ swap activity, in spite of the enormous memory > pressures. I have lots of processes in the system, like 8 > httpd's, 4 getty's, etc. most of which should be "idle" ... Why > aren't the pages (eg. mapped stacks) from these processes being > swapped out? That's an interesting one. Most "complaints" I've had about test9 is that it swaps more than previous versions ;) But let me give you the answer... Small code changes in deactivate_page() have caused the drop_behind() code to actually WORK AS ADVERTISED right now, and because of that streaming IO doesn't put any memory pressure on the system. 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/