From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 8 May 2000 15:46:09 -0300 (BRST) From: Rik van Riel Subject: Re: [PATCH] Recent VM fiasco - fixed 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: Zlatko Calusic Cc: linux-mm@kvack.org, linux-kernel@vger.rutgers.edu, Linus Torvalds List-ID: On 8 May 2000, Zlatko Calusic wrote: > Rik van Riel writes: > > On 8 May 2000, Zlatko Calusic wrote: > > > > > BTW, this patch mostly *removes* cruft recently added, and > > > returns to the known state of operation. > > > > Which doesn't work. > > > > Think of a 1GB machine which has a 16MB DMA zone, > > a 950MB normal zone and a very small HIGHMEM zone. > > > > With the old VM code the HIGHMEM zone would be > > swapping like mad while the other two zones are > > idle. > > > > It's Not That Kind Of Party(tm) > > OK, I see now what you have in mind, and I'll try to test it when I > get home (yes, late worker... my only connection to the Net :)) > If only I could buy 1GB to test in the real setup. ;) > > But still, optimizing for 1GB, while at the same time completely > killing performances even *usability* for the 99% of users doesn't > look like a good solution, does it? 20MB and 24MB machines will be in the same situation, if that's of any help to you ;) > But after few hours spent dealing with the horrible VM that is > in the pre6, I'm not scared anymore. And I think that solution > to all our problems with zone balancing must be very simple. It is. Linus is working on a conservative & simple solution while I'm trying a bit more "far-out" code (active and inactive list a'la BSD, etc...). We should have at least one good VM subsystem within the next few weeks ;) regards, Rik -- The Internet is not a network of computers. It is a network of people. That is its real strength. Wanna talk about the kernel? irc.openprojects.net / #kernelnewbies 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/