From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH] Remove nr_async_pages limit References: Reply-To: zlatko.calusic@iskon.hr From: Zlatko Calusic Date: 04 Jun 2001 10:21:32 +0200 In-Reply-To: (Alan Cox's message of "Mon, 4 Jun 2001 07:39:10 +0100 (BST)") Message-ID: <87iticfyer.fsf@atlas.iskon.hr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Alan Cox Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: Alan Cox writes: > > This patch removes the limit on the number of async pages in the > > flight. > > I have this in all 2.4.5-ac. It does help a little but there are some other > bits you have to deal with too, in paticular wrong aging. See the -ac version > Yes, I'll check -ac to see your changes. Although, I can't see what is the impact of the unlimited number of the async pages on the aging, I don't see a connection?! In the mean time I tested the patch even more thoroughly under various loads and I can't find any problem with it. Performance is same or better a little bit, as you say. :) My other patch (enlarging inactive dirty list) has a much bigger impact on the aging process, but I also see only improvement with it. I think that swap_out path should be tweaked a little bit (it is too aggressive now), and then things will come up even better. Regards, -- Zlatko -- 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/