From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 20 Feb 2007 11:00:05 -0800 From: William Lee Irwin III Subject: Re: [PATCH] free swap space when (re)activating page Message-ID: <20070220190005.GQ21484@holomorphy.com> References: <45D63445.5070005@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45D63445.5070005@redhat.com> Sender: owner-linux-mm@kvack.org Return-Path: To: Rik van Riel Cc: linux-kernel , linux-mm , Christoph Lameter List-ID: On Fri, Feb 16, 2007 at 05:46:29PM -0500, Rik van Riel wrote: > The attached patch does what I described in the other thread, it > makes the pageout code free swap space when swap is getting full, > by taking away the swap space from pages that get moved onto or > back onto the active list. > In some tests on a system with 2GB RAM and 1GB swap, it kept the > free swap at 500MB for a 2.3GB qsbench, while without the patch > over 950MB of swap was in use all of the time. > This should give kswapd more flexibility in what to swap out. > What do you think? > Signed-off-by: Rik van Riel I would call this a bugfix, not an optimization. -- wli -- 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-mm.org/ . Don't email: email@kvack.org