From: Christoph Lameter <cl@linux.com>
To: Mel Gorman <mgorman@techsingularity.net>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.com>, Vlastimil Babka <vbabka@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Linux-MM <linux-mm@kvack.org>,
Linux-Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: page_alloc: High-order per-cpu page allocator v7
Date: Wed, 7 Dec 2016 11:11:08 -0600 (CST) [thread overview]
Message-ID: <alpine.DEB.2.20.1612071109160.11056@east.gentwo.org> (raw)
In-Reply-To: <20161207164554.b73qjfxy2w3h3ycr@techsingularity.net>
On Wed, 7 Dec 2016, Mel Gorman wrote:
> 3.0-era kernels had better fragmentation control, higher success rates at
> allocation etc. I vaguely recall that it had fewer sources of high-order
> allocations but I don't remember specifics and part of that could be the
> lack of THP at the time. The overhead was massive due to massive stalls
> and excessive reclaim -- hours to complete some high-allocation stress
> tests even if the success rate was high.
There were a couple of high order page reclaim improvements implemented
at that time that were later abandoned. I think higher order pages were
more available than now. SLUB was regularly able to get higher order pages.
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next prev parent reply other threads:[~2016-12-07 17:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-07 10:12 Mel Gorman
2016-12-07 14:52 ` Christoph Lameter
2016-12-07 15:57 ` Mel Gorman
2016-12-07 16:40 ` Christoph Lameter
2016-12-07 16:45 ` Mel Gorman
2016-12-07 17:11 ` Christoph Lameter [this message]
2016-12-07 17:35 ` Mel Gorman
2016-12-07 19:00 ` Eric Dumazet
2016-12-07 19:11 ` Eric Dumazet
2016-12-07 19:48 ` Mel Gorman
2016-12-07 20:10 ` Eric Dumazet
2016-12-07 21:19 ` Mel Gorman
2016-12-07 23:25 ` Mel Gorman
2016-12-08 8:22 ` Jesper Dangaard Brouer
2016-12-08 9:18 ` Mel Gorman
2016-12-08 10:43 ` Jesper Dangaard Brouer
2016-12-08 11:06 ` Mel Gorman
2016-12-08 14:48 ` Jesper Dangaard Brouer
2016-12-08 15:11 ` Mel Gorman
2016-12-08 17:19 ` Jesper Dangaard Brouer
2016-12-08 17:39 ` Mel Gorman
2016-12-08 16:04 ` Eric Dumazet
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