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Date: Mon, 11 Jul 2016 15:20:15 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: "Hillf Danton" <hillf.zj@alibaba-inc.com>
Cc: "'Mel Gorman'" <mgorman@techsingularity.net>,
        "'Johannes Weiner'" <hannes@cmpxchg.org>,
        "'Vlastimil Babka'" <vbabka@suse.cz>,
        "'linux-kernel'" <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>
Subject: Re: [PATCH] mm, vmscan: Give up balancing node for high order
 allocations earlier
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On Wed, 29 Jun 2016 13:42:12 +0800 "Hillf Danton" <hillf.zj@alibaba-inc.com> wrote:

> To avoid excessive reclaim, we give up rebalancing for high order 
> allocations right after reclaiming enough pages.

hm.  What are the observed runtime effects of this change?  Any testing
results?