From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ee0-f41.google.com (mail-ee0-f41.google.com [74.125.83.41]) by kanga.kvack.org (Postfix) with ESMTP id 62C946B0037 for ; Fri, 18 Apr 2014 16:48:43 -0400 (EDT) Received: by mail-ee0-f41.google.com with SMTP id t10so1953223eei.28 for ; Fri, 18 Apr 2014 13:48:42 -0700 (PDT) Received: from mycroft.westnet.com (Mycroft.westnet.com. [216.187.52.7]) by mx.google.com with ESMTPS id u5si41867809een.173.2014.04.18.13.48.40 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 18 Apr 2014 13:48:41 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <21329.36761.970643.523119@quad.stoffel.home> Date: Fri, 18 Apr 2014 16:48:25 -0400 From: "John Stoffel" Subject: Re: [PATCH 0/2] Disable zone_reclaim_mode by default v2 In-Reply-To: <20140418130543.8619064c0e5d26cd914c4c3c@linux-foundation.org> References: <1396945380-18592-1-git-send-email-mgorman@suse.de> <20140418130543.8619064c0e5d26cd914c4c3c@linux-foundation.org> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Mel Gorman , Robert Haas , Josh Berkus , Andres Freund , Christoph Lameter , Linux-MM , LKML , Michal Hocko >>>>> "Andrew" == Andrew Morton writes: Andrew> On Tue, 8 Apr 2014 09:22:58 +0100 Mel Gorman wrote: >> Changelog since v1 >> o topology comment updates >> >> When it was introduced, zone_reclaim_mode made sense as NUMA distances >> punished and workloads were generally partitioned to fit into a NUMA >> node. NUMA machines are now common but few of the workloads are NUMA-aware >> and it's routine to see major performance due to zone_reclaim_mode being >> enabled but relatively few can identify the problem. This is unclear here. "see major performance due" doesn't make sense to me. -- 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