Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261375AbTHaQHN (ORCPT ); Sun, 31 Aug 2003 12:07:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262151AbTHaQHN (ORCPT ); Sun, 31 Aug 2003 12:07:13 -0400 Received: from nat-pool-bos.redhat.com ([66.187.230.200]:42080 "EHLO chimarrao.boston.redhat.com") by vger.kernel.org with ESMTP id S261375AbTHaQHM (ORCPT ); Sun, 31 Aug 2003 12:07:12 -0400 Date: Sun, 31 Aug 2003 12:06:59 -0400 (EDT) From: Rik van Riel X-X-Sender: riel@chimarrao.boston.redhat.com To: Con Kolivas cc: Andrew Morton , , Subject: Re: 2.6.0-test4-mm1 - kswap hogs cpu OO takes ages to start! In-Reply-To: <200308281211.43945.kernel@kolivas.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 852 Lines: 24 On Thu, 28 Aug 2003, Con Kolivas wrote: > > Does this make a difference? > > Tried it. No change. > > kswapd0 can hit 90% cpu at times unless the swappiness is increased. Looks like the problem is that cache and process pages are on the same lists, forcing kswapd to scan the lists endlessly. One thing you could try is splitting the lists, at least the active list, like done in 2.4-rmap15... -- "Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it." - Brian W. Kernighan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/