From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rafael Aquini Subject: Re: [PATCH 7/9] Revert "mm: have order > 0 compaction start off where it left" Date: Fri, 21 Sep 2012 14:52:43 -0300 Message-ID: <20120921175242.GG6665@optiplex.redhat.com> References: <1348224383-1499-1-git-send-email-mgorman@suse.de> <1348224383-1499-8-git-send-email-mgorman@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Andrew Morton , Richard Davies , Shaohua Li , Rik van Riel , Avi Kivity , QEMU-devel , KVM , Linux-MM , LKML To: Mel Gorman Return-path: Content-Disposition: inline In-Reply-To: <1348224383-1499-8-git-send-email-mgorman@suse.de> Sender: owner-linux-mm@kvack.org List-Id: kvm.vger.kernel.org On Fri, Sep 21, 2012 at 11:46:21AM +0100, Mel Gorman wrote: > This reverts commit 7db8889a (mm: have order > 0 compaction start off > where it left) and commit de74f1cc (mm: have order > 0 compaction start > near a pageblock with free pages). These patches were a good idea and > tests confirmed that they massively reduced the amount of scanning but > the implementation is complex and tricky to understand. A later patch > will cache what pageblocks should be skipped and reimplements the > concept of compact_cached_free_pfn on top for both migration and > free scanners. > > Signed-off-by: Mel Gorman > Acked-by: Rik van Riel > --- Acked-by: Rafael Aquini -- 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/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932707Ab2IURw6 (ORCPT ); Fri, 21 Sep 2012 13:52:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45343 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932208Ab2IURw4 (ORCPT ); Fri, 21 Sep 2012 13:52:56 -0400 Date: Fri, 21 Sep 2012 14:52:43 -0300 From: Rafael Aquini To: Mel Gorman Cc: Andrew Morton , Richard Davies , Shaohua Li , Rik van Riel , Avi Kivity , QEMU-devel , KVM , Linux-MM , LKML Subject: Re: [PATCH 7/9] Revert "mm: have order > 0 compaction start off where it left" Message-ID: <20120921175242.GG6665@optiplex.redhat.com> References: <1348224383-1499-1-git-send-email-mgorman@suse.de> <1348224383-1499-8-git-send-email-mgorman@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1348224383-1499-8-git-send-email-mgorman@suse.de> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 21, 2012 at 11:46:21AM +0100, Mel Gorman wrote: > This reverts commit 7db8889a (mm: have order > 0 compaction start off > where it left) and commit de74f1cc (mm: have order > 0 compaction start > near a pageblock with free pages). These patches were a good idea and > tests confirmed that they massively reduced the amount of scanning but > the implementation is complex and tricky to understand. A later patch > will cache what pageblocks should be skipped and reimplements the > concept of compact_cached_free_pfn on top for both migration and > free scanners. > > Signed-off-by: Mel Gorman > Acked-by: Rik van Riel > --- Acked-by: Rafael Aquini From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:46745) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TF7PL-0002qo-V4 for qemu-devel@nongnu.org; Fri, 21 Sep 2012 13:52:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TF7PL-0000h4-0B for qemu-devel@nongnu.org; Fri, 21 Sep 2012 13:52:55 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55955) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TF7PK-0000fo-Os for qemu-devel@nongnu.org; Fri, 21 Sep 2012 13:52:54 -0400 Date: Fri, 21 Sep 2012 14:52:43 -0300 From: Rafael Aquini Message-ID: <20120921175242.GG6665@optiplex.redhat.com> References: <1348224383-1499-1-git-send-email-mgorman@suse.de> <1348224383-1499-8-git-send-email-mgorman@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1348224383-1499-8-git-send-email-mgorman@suse.de> Subject: Re: [Qemu-devel] [PATCH 7/9] Revert "mm: have order > 0 compaction start off where it left" List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Mel Gorman Cc: Richard Davies , KVM , QEMU-devel , LKML , Linux-MM , Avi Kivity , Andrew Morton , Shaohua Li On Fri, Sep 21, 2012 at 11:46:21AM +0100, Mel Gorman wrote: > This reverts commit 7db8889a (mm: have order > 0 compaction start off > where it left) and commit de74f1cc (mm: have order > 0 compaction start > near a pageblock with free pages). These patches were a good idea and > tests confirmed that they massively reduced the amount of scanning but > the implementation is complex and tricky to understand. A later patch > will cache what pageblocks should be skipped and reimplements the > concept of compact_cached_free_pfn on top for both migration and > free scanners. > > Signed-off-by: Mel Gorman > Acked-by: Rik van Riel > --- Acked-by: Rafael Aquini