From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 25 Sep 2000 19:26:56 -0300 (BRST) From: Rik van Riel Subject: Re: [patch] vmfixes-2.4.0-test9-B2 - fixing deadlocks In-Reply-To: <20000926002812.C5010@athlon.random> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrea Arcangeli Cc: "Stephen C. Tweedie" , Ingo Molnar , Linus Torvalds , Roger Larsson , MM mailing list , linux-kernel@vger.kernel.org List-ID: On Tue, 26 Sep 2000, Andrea Arcangeli wrote: > On Mon, Sep 25, 2000 at 04:26:17PM -0300, Rik van Riel wrote: > > > > It doesn't --- that is part of the design. The vm scanner propagates > > > > > > And that's the inferior part of the design IMHO. > > > > Indeed, but physical page based aging is a definate > > 2.5 thing ... ;( > > I'm talking about the fact that if you have a file mmapped in > 1.5G of RAM test9 will waste time rolling between LRUs 384000 > pages, while classzone won't ever see 1 of those pages until you > run low on fs cache. IMHO this is a minor issue because: 1) you need to do page replacement with shared pages right 2) you don't /want/ to run low on fs cache, you want to have a good balance between thee cache(s) and the processes OTOH, if you have a way to keep fair page aging and fix the CPU time issue at the same time, I'd love to see it. 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/