From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from max.phys.uu.nl (max.phys.uu.nl [131.211.32.73]) by kvack.org (8.8.7/8.8.7) with ESMTP id SAA12867 for ; Tue, 17 Nov 1998 18:01:05 -0500 Date: Tue, 17 Nov 1998 21:25:06 +0100 (CET) From: Rik van Riel Reply-To: Rik van Riel Subject: Re: unexpected paging during large file reads in 2.1.127 In-Reply-To: <199811171206.MAA01194@dax.scot.redhat.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: "Stephen C. Tweedie" Cc: Zlatko Calusic , linux-kernel@vger.rutgers.edu, Linux-MM List List-ID: On Tue, 17 Nov 1998, Stephen C. Tweedie wrote: > On Tue, 17 Nov 1998 07:42:12 +0100 (CET), Rik van Riel > said: > > > I meant the page aging that occurs in vmscan.c, where we > > decide on which page to unmap from a program's address > > space. > > For the last time, NO IT DOES NOT. Read the source. Linus removed it. > We do not use page->age AT ALL in vmscan.c in current 2.1 kernels. I just learned that answering questions from memory is not a good idea when reality changes under your nose :) I'll try to remember this, really... > This change improves low memory performance very measurably in all > tests I have tried so far. OK, I agree with these changes and have seen a bit of improvement on my own (72M) system too. cheers, Rik -- slowly getting used to dvorak kbd layout... +-------------------------------------------------------------------+ | Linux memory management tour guide. H.H.vanRiel@phys.uu.nl | | Scouting Vries cubscout leader. http://www.phys.uu.nl/~riel/ | +-------------------------------------------------------------------+ -- This is a majordomo managed list. To unsubscribe, send a message with the body 'unsubscribe linux-mm me@address' to: majordomo@kvack.org