From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B3C0C43387 for ; Mon, 7 Jan 2019 23:43:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5FB802087F for ; Mon, 7 Jan 2019 23:43:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727261AbfAGXn4 (ORCPT ); Mon, 7 Jan 2019 18:43:56 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:34672 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726689AbfAGXn4 (ORCPT ); Mon, 7 Jan 2019 18:43:56 -0500 Received: from localhost.localdomain (c-24-6-170-16.hsd1.ca.comcast.net [24.6.170.16]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 7684825A; Mon, 7 Jan 2019 23:43:55 +0000 (UTC) Date: Mon, 7 Jan 2019 15:43:54 -0800 From: Andrew Morton To: Mel Gorman Cc: Linux-MM , David Rientjes , Andrea Arcangeli , Vlastimil Babka , ying.huang@intel.com, kirill@shutemov.name, Linux List Kernel Mailing Subject: Re: [PATCH 00/25] Increase success rates and reduce latency of compaction v2 Message-Id: <20190107154354.b0805ca15767fc7ea9e37545@linux-foundation.org> In-Reply-To: <20190104125011.16071-1-mgorman@techsingularity.net> References: <20190104125011.16071-1-mgorman@techsingularity.net> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 4 Jan 2019 12:49:46 +0000 Mel Gorman wrote: > This series reduces scan rates and success rates of compaction, primarily > by using the free lists to shorten scans, better controlling of skip > information and whether multiple scanners can target the same block and > capturing pageblocks before being stolen by parallel requests. The series > is based on the 4.21/5.0 merge window after Andrew's tree had been merged. > It's known to rebase cleanly. > > ... > > include/linux/compaction.h | 3 +- > include/linux/gfp.h | 7 +- > include/linux/mmzone.h | 2 + > include/linux/sched.h | 4 + > kernel/sched/core.c | 3 + > mm/compaction.c | 1031 ++++++++++++++++++++++++++++++++++---------- > mm/internal.h | 23 +- > mm/migrate.c | 2 +- > mm/page_alloc.c | 70 ++- > 9 files changed, 908 insertions(+), 237 deletions(-) Boy that's a lot of material. I just tossed it in there unread for now. Do you have any suggestions as to how we can move ahead with getting this appropriately reviewed and tested?