From: Vlastimil Babka <vbabka@suse.cz>
To: Mel Gorman <mgorman@techsingularity.net>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux.com>, Michal Hocko <mhocko@suse.com>,
Johannes Weiner <hannes@cmpxchg.org>,
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 v3
Date: Mon, 28 Nov 2016 12:00:41 +0100 [thread overview]
Message-ID: <5621b386-ee65-0fa5-e217-334924412c7f@suse.cz> (raw)
In-Reply-To: <20161127131954.10026-1-mgorman@techsingularity.net>
On 11/27/2016 02:19 PM, Mel Gorman wrote:
>
> 2-socket modern machine
> 4.9.0-rc5 4.9.0-rc5
> vanilla hopcpu-v3
> Hmean send-64 178.38 ( 0.00%) 256.74 ( 43.93%)
> Hmean send-128 351.49 ( 0.00%) 507.52 ( 44.39%)
> Hmean send-256 671.23 ( 0.00%) 1004.19 ( 49.60%)
> Hmean send-1024 2663.60 ( 0.00%) 3910.42 ( 46.81%)
> Hmean send-2048 5126.53 ( 0.00%) 7562.13 ( 47.51%)
> Hmean send-3312 7949.99 ( 0.00%) 11565.98 ( 45.48%)
> Hmean send-4096 9433.56 ( 0.00%) 12929.67 ( 37.06%)
> Hmean send-8192 15940.64 ( 0.00%) 21587.63 ( 35.43%)
> Hmean send-16384 26699.54 ( 0.00%) 32013.79 ( 19.90%)
> Hmean recv-64 178.38 ( 0.00%) 256.72 ( 43.92%)
> Hmean recv-128 351.49 ( 0.00%) 507.47 ( 44.38%)
> Hmean recv-256 671.20 ( 0.00%) 1003.95 ( 49.57%)
> Hmean recv-1024 2663.45 ( 0.00%) 3909.70 ( 46.79%)
> Hmean recv-2048 5126.26 ( 0.00%) 7560.67 ( 47.49%)
> Hmean recv-3312 7949.50 ( 0.00%) 11564.63 ( 45.48%)
> Hmean recv-4096 9433.04 ( 0.00%) 12927.48 ( 37.04%)
> Hmean recv-8192 15939.64 ( 0.00%) 21584.59 ( 35.41%)
> Hmean recv-16384 26698.44 ( 0.00%) 32009.77 ( 19.89%)
>
> 1-socket 6 year old machine
> 4.9.0-rc5 4.9.0-rc5
> vanilla hopcpu-v3
> Hmean send-64 87.47 ( 0.00%) 127.14 ( 45.36%)
> Hmean send-128 174.36 ( 0.00%) 256.42 ( 47.06%)
> Hmean send-256 347.52 ( 0.00%) 509.41 ( 46.59%)
> Hmean send-1024 1363.03 ( 0.00%) 1991.54 ( 46.11%)
> Hmean send-2048 2632.68 ( 0.00%) 3759.51 ( 42.80%)
> Hmean send-3312 4123.19 ( 0.00%) 5873.28 ( 42.45%)
> Hmean send-4096 5056.48 ( 0.00%) 7072.81 ( 39.88%)
> Hmean send-8192 8784.22 ( 0.00%) 12143.92 ( 38.25%)
> Hmean send-16384 15081.60 ( 0.00%) 19812.71 ( 31.37%)
> Hmean recv-64 86.19 ( 0.00%) 126.59 ( 46.87%)
> Hmean recv-128 173.93 ( 0.00%) 255.21 ( 46.73%)
> Hmean recv-256 346.19 ( 0.00%) 506.72 ( 46.37%)
> Hmean recv-1024 1358.28 ( 0.00%) 1980.03 ( 45.77%)
> Hmean recv-2048 2623.45 ( 0.00%) 3729.35 ( 42.15%)
> Hmean recv-3312 4108.63 ( 0.00%) 5831.47 ( 41.93%)
> Hmean recv-4096 5037.25 ( 0.00%) 7021.59 ( 39.39%)
> Hmean recv-8192 8762.32 ( 0.00%) 12072.44 ( 37.78%)
> Hmean recv-16384 15042.36 ( 0.00%) 19690.14 ( 30.90%)
That looks way much better than the "v1" RFC posting. Was it just
because you stopped doing the "at first iteration, use migratetype as
index", and initializing pindex UINT_MAX hits so much quicker, or was
there something more subtle that I missed? There was no changelog
between "v1" and "v2".
>
> Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
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next prev parent reply other threads:[~2016-11-28 11:00 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-27 13:19 Mel Gorman
2016-11-28 11:00 ` Vlastimil Babka [this message]
2016-11-28 11:45 ` Mel Gorman
2016-11-30 8:55 ` Mel Gorman
2016-11-28 15:39 ` Christoph Lameter
2016-11-28 16:21 ` Mel Gorman
2016-11-28 16:38 ` Christoph Lameter
2016-11-28 18:47 ` Mel Gorman
2016-11-28 18:54 ` Christoph Lameter
2016-11-28 20:59 ` Vlastimil Babka
2016-11-28 19:54 ` Johannes Weiner
2016-11-30 12:40 ` Jesper Dangaard Brouer
2016-11-30 14:06 ` Mel Gorman
2016-11-30 15:06 ` Jesper Dangaard Brouer
2016-11-30 16:35 ` Mel Gorman
2016-12-01 17:34 ` Jesper Dangaard Brouer
2016-12-01 22:17 ` Paolo Abeni
2016-12-02 15:37 ` Jesper Dangaard Brouer
2016-12-02 15:44 ` Paolo Abeni
2016-11-30 13:05 ` Michal Hocko
2016-11-30 14:16 ` Mel Gorman
2016-11-30 14:59 ` Michal Hocko
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