From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from burns.conectiva (burns.conectiva [10.0.0.4]) by perninha.conectiva.com.br (Postfix) with SMTP id AC7DD16B18 for ; Sun, 20 May 2001 03:42:19 -0300 (EST) Date: Sun, 20 May 2001 03:42:18 -0300 (BRST) From: Rik van Riel Subject: Re: [RFC][PATCH] Re: Linux 2.4.4-ac10 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: Mike Galbraith Cc: "Stephen C. Tweedie" , Ingo Oeser , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Sun, 20 May 2001, Mike Galbraith wrote: > On Sat, 19 May 2001, Rik van Riel wrote: > > On Sat, 19 May 2001, Mike Galbraith wrote: > > > On Fri, 18 May 2001, Stephen C. Tweedie wrote: > > > > > > > That's the main problem with static parameters. The problem you are > > > > trying to solve is fundamentally dynamic in most cases (which is also > > > > why magic numbers tend to suck in the VM.) > > > > > > Magic numbers might be sucking some performance right now ;-) > > > > ... so you replace them with some others ... ;) > > I reused one of our base numbers to classify the severity of the > situation.. not the same as inventing new ones. (well, not quite > the same anyway.. half did come from the south fourty;) *nod* ;) (not that I'm saying this is bad ... it's just that I'd like to know why things work before looking at applying them) > > > (yes, the last hunk looks out of place wrt my text. > > > > It also looks kind of bogus and geared completely towards this > > particular workload ;) > > I'm not sure why that helps. I didn't put it in as a trick or > anything though. I put it in because it didn't seem like a > good idea to ever have more cleaned pages than free pages at a > time when we're yammering for help.. so I did that and it helped. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Note that this is not the normal situation. Now think about the amount of data you'd be blowing away from the inactive_clean pages after a bit of background aging has gone on on a lightly loaded system. Not Good(tm) regards, Rik -- Linux MM bugzilla: http://linux-mm.org/bugzilla.shtml Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose... http://www.surriel.com/ http://www.conectiva.com/ http://distro.conectiva.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/