From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 17 Dec 2002 19:50:04 -0200 (BRST) From: Rik van Riel Subject: Re: [PATCH] 2.4.20-rmap15b In-Reply-To: <200212161610.gBGGAuB7028719@localhost.localdomain> Message-ID: References: <200212161610.gBGGAuB7028719@localhost.localdomain> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Georg Nikodym Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Mon, 16 Dec 2002, Georg Nikodym wrote: > Incidentally, a colleague claimed to have seem this behaviour on a > non-rmap 2.4.20. > 1. Known behaviour? > 2. Is there any data that I should be collecting that people are > interested in? > 3. Or should I just go back to 2.4.19-rmap14b (which did not trouble me > in this way)? The suspect is the disk elevator, which isn't scheduling requests in a way to cause lower read latency, but is optimised more for throughput. This results in some pauses. I'll need to look into it. regards, Rik -- Bravely reimplemented by the knights who say "NIH". http://www.surriel.com/ http://guru.conectiva.com/ Current spamtrap: october@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-mm.org/