Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965025AbVKAFQt (ORCPT ); Tue, 1 Nov 2005 00:16:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965027AbVKAFQt (ORCPT ); Tue, 1 Nov 2005 00:16:49 -0500 Received: from smtp200.mail.sc5.yahoo.com ([216.136.130.125]:22662 "HELO smtp200.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S965025AbVKAFQs (ORCPT ); Tue, 1 Nov 2005 00:16:48 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com.au; h=Received:Message-ID:Date:From:User-Agent:X-Accept-Language:MIME-Version:To:Subject:Content-Type:Content-Transfer-Encoding; b=03sYZ+dwrupYIkTylX7YpABlSFrWOjAA7DPAVjVv2yxgFtwUDHT/QNtG4e7IoWRWg2CgEarhjMlejn0tAwYo+Og5vNAd80+GiZ70wjM8dbV+Xgi48qVxdhv64t2Gf8DRsn2ccwJTFYhvvxZgx3Kn+8iCQPrg6y8XO0q4eZuciu8= ; Message-ID: <4366FA9A.20402@yahoo.com.au> Date: Tue, 01 Nov 2005 16:18:18 +1100 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20051007 Debian/1.7.12-1 X-Accept-Language: en MIME-Version: 1.0 To: linux-kernel Subject: [PATCH 0/3] better zone and watermark balancing Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1454 Lines: 60 This patchset I have had around for a long time and improves various zone and watermark balancing by making calculations more logical. When reading 128GB through the pagecache, in 4 concurrent streams, the final page residency and total reclaim ratios look like this (no highmem, ~900MB RAM): 2.6.14-git3 DMA pages= 2214, scan= 124146 NRM pages=215966, scan=3990129 Pages Scan DMA 01.01 03.01 NRM 98.99 96.99 2.6.14-git3-vm DMA pages= 2220, scan= 99264 NRM pages=216373, scan=4011975 Pages Scan DMA 01.01 02.41 NRM 98.99 97.59 So in this case, DMA is still getting a beating, but things have improved nicely. Now are results with highmem and ~4GB RAM: 2.6.14-git3 DMA pages=0, scan=0 NRM pages=177241, scan=1607991 HIG pages=817122, scan=1607166 Pages Scan DMA 00.00 00.00 NRM 17.83 50.01 HIG 82.17 49.99 2.6.14-git3-vm DMA pages=0, scan=0 NRM pages=178215, scan=553311 HIG pages=815771, scan=2757744 Pages Scan DMA 00.00 00.00 NRM 17.92 16.71 HIG 82.07 83.28 Current kernels are abysmal, while the patches bring scanning to an almost perfect ratio. -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/