From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 16 Sep 2000 15:22:36 -0300 (BRST) From: Rik van Riel Subject: Re: Happiness with t8-vmpatch4 (was Re: Does page-aging really work?) In-Reply-To: <39C3BA07.9525723F@ucla.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Benjamin Redelings I Cc: linux-mm@kvack.org List-ID: On Sat, 16 Sep 2000, Benjamin Redelings I wrote: > > This is indeed something to look at. Maybe we could give > > idle processes (sleeping for more than 20 seconds?) a > > "full" swap_cnt instead of swap_cnt = rss >> SWAP_SHIFT ? > > This doesn't seem like it should be necessary. Right now, > unused processes ARE swapped preferentially (and completely) - > its just that swapping happens all of a sudden. We may be able to fix that by swapping long-idle processes before we have eaten all of the cache. > Evicting unused pages, either from the cache or from > process can have significant benefits on my machine (64Mb). > Once swapping triggered, 20Mb were paged out, and stayed out. > If these 20 Mb had been paged out before, then I would have had > 20Mb more cache to work with, which is 31% of my memory. Go > figure :) *nod* > BTW, with test8-vmpatch4, I am gettings zillions of "VM: > page_launder, found pre-cleaned page ?!" messages. No you're not. That's test8-vmpatch3. This is fixed in -vmpatch4... (and the comments in the code have been updated to explain how and what) 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/