From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wg0-f41.google.com (mail-wg0-f41.google.com [74.125.82.41]) by kanga.kvack.org (Postfix) with ESMTP id 2388C6B006C for ; Sat, 7 Mar 2015 10:20:58 -0500 (EST) Received: by wggy19 with SMTP id y19so1875129wgg.9 for ; Sat, 07 Mar 2015 07:20:57 -0800 (PST) Received: from mx2.suse.de (cantor2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id ca7si26849146wib.49.2015.03.07.07.20.55 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 07 Mar 2015 07:20:56 -0800 (PST) From: Mel Gorman Subject: [RFC PATCH 0/4] Automatic NUMA balancing and PROT_NONE handling followup v2r8 Date: Sat, 7 Mar 2015 15:20:47 +0000 Message-Id: <1425741651-29152-1-git-send-email-mgorman@suse.de> Sender: owner-linux-mm@kvack.org List-ID: To: Dave Chinner Cc: Andrew Morton , Ingo Molnar , Linus Torvalds , Aneesh Kumar , Linux Kernel Mailing List , Linux-MM , xfs@oss.sgi.com, linuxppc-dev@lists.ozlabs.org, Mel Gorman Dave Chinner reported a problem due to excessive NUMA balancing activity and bisected it. The first patch in this series corrects a major problem that is unlikely to affect Dave but is still serious. Patch 2 is a minor cleanup that was spotted while looking at scan rate control. Patch 3 is minor and unlikely to make a difference but is still an inconsistentcy between base and THP handling. Patch 4 is the important one, it slows PTE scan updates if migrations are failing or throttled. Details of the performance impact on local tests is included in the patch. include/linux/migrate.h | 5 ----- include/linux/sched.h | 9 +++++---- kernel/sched/fair.c | 8 ++++++-- mm/huge_memory.c | 8 +++++--- mm/memory.c | 3 ++- mm/migrate.c | 20 -------------------- 6 files changed, 18 insertions(+), 35 deletions(-) -- 2.1.2 -- 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