From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 25 Apr 2000 10:35:52 +0100 From: "Stephen C. Tweedie" Subject: Re: pressuring dirty pages (2.3.99-pre6) Message-ID: <20000425103552.A4627@redhat.com> References: <20000424222702.C3389@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from riel@conectiva.com.br on Mon, Apr 24, 2000 at 07:42:12PM -0300 Sender: owner-linux-mm@kvack.org Return-Path: To: riel@nl.linux.org Cc: "Stephen C. Tweedie" , linux-mm@kvack.org List-ID: Hi, On Mon, Apr 24, 2000 at 07:42:12PM -0300, Rik van Riel wrote: > > That will not work. The problem isn't that kswapd eats cpu, > but the problem is that the dirty pages completely dominate > physical memory. That isn't a "problem". That's a state. Of _course_ memory usage is going to be dominated by whichever sort of page is being predominantly used. So we need to identify the real problem. Is 2.3 much worse than 2.2 at this dirty-write-mmap test? Are we seeing swap fragmentation reducing swap throughput? Is the VM simply keeping insufficient memory available for tasks other than the highly paging one? --Stephen -- 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/