From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 19 Jun 2002 13:21:29 -0700 (MST) From: Craig Kulesa Subject: Re: [PATCH] (1/2) reverse mapping VM for 2.5.23 (rmap-13b) In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Ingo Molnar Cc: Rik van Riel , Dave Jones , Daniel Phillips , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Linus Torvalds , rwhron@earthlink.net List-ID: On Wed, 19 Jun 2002, Ingo Molnar wrote: > btw., isnt there a fair chance that by 'fixing' the aging+rmap code to > swap out less, you'll ultimately swap in more? [because the extra swappout > likely ended up freeing up RAM as well, which in turn decreases the amount > of trashing.] Agree. Heightened swapout in this rather simplified example) isn't a problem in itself, unless it really turns out to be a bottleneck in a wide variety of loads. As long as the *right* pages are being swapped and don't have to be paged right back in again. I'll try a more varied set of tests tonight, with cpu usage tabulated. -Craig -- 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/