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Message-Id: <1461759885-17163-1-git-send-email-mgorman@techsingularity.net>
Date: Wed, 27 Apr 2016 13:24:41 +0100
From: Mel Gorman <mgorman@...hsingularity.net>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Vlastimil Babka <vbabka@...e.cz>,
Jesper Dangaard Brouer <brouer@...hat.com>,
Linux-MM <linux-mm@...ck.org>,
LKML <linux-kernel@...r.kernel.org>,
Mel Gorman <mgorman@...hsingularity.net>
Subject: [PATCH 0/4] Optimise page alloc/free fast paths followup v1
This is a follow-up series based on Vlastimil Babka's review feedback.
It should be taking into account the changes in mmotm already made although
that did involve some guesswork. It should be relatively easy to merge
into the correct places. However, if there are major conflicts then let
me know and I'll respin the entire series.
There is a marginal impact to the series but it's within the noise and
necessary to address the problems.
pagealloc
4.6.0-rc4 4.6.0-rc4
mmotm-20150422 followup-v1r1
Min alloc-odr0-1 317.00 ( 0.00%) 318.00 ( -0.32%)
Min alloc-odr0-2 232.00 ( 0.00%) 233.00 ( -0.43%)
Min alloc-odr0-4 192.00 ( 0.00%) 194.00 ( -1.04%)
Min alloc-odr0-8 167.00 ( 0.00%) 168.00 ( -0.60%)
Min alloc-odr0-16 154.00 ( 0.00%) 155.00 ( -0.65%)
Min alloc-odr0-32 148.00 ( 0.00%) 149.00 ( -0.68%)
Min alloc-odr0-64 145.00 ( 0.00%) 146.00 ( -0.69%)
Min alloc-odr0-128 143.00 ( 0.00%) 144.00 ( -0.70%)
Min alloc-odr0-256 152.00 ( 0.00%) 154.00 ( -1.32%)
Min alloc-odr0-512 164.00 ( 0.00%) 166.00 ( -1.22%)
Min alloc-odr0-1024 172.00 ( 0.00%) 172.00 ( 0.00%)
Min alloc-odr0-2048 178.00 ( 0.00%) 178.00 ( 0.00%)
Min alloc-odr0-4096 184.00 ( 0.00%) 184.00 ( 0.00%)
Min alloc-odr0-8192 187.00 ( 0.00%) 186.00 ( 0.53%)
Min alloc-odr0-16384 188.00 ( 0.00%) 187.00 ( 0.53%)
Min free-odr0-1 178.00 ( 0.00%) 177.00 ( 0.56%)
Min free-odr0-2 125.00 ( 0.00%) 126.00 ( -0.80%)
Min free-odr0-4 98.00 ( 0.00%) 99.00 ( -1.02%)
Min free-odr0-8 84.00 ( 0.00%) 86.00 ( -2.38%)
Min free-odr0-16 79.00 ( 0.00%) 80.00 ( -1.27%)
Min free-odr0-32 75.00 ( 0.00%) 76.00 ( -1.33%)
Min free-odr0-64 73.00 ( 0.00%) 74.00 ( -1.37%)
Min free-odr0-128 72.00 ( 0.00%) 73.00 ( -1.39%)
Min free-odr0-256 88.00 ( 0.00%) 89.00 ( -1.14%)
Min free-odr0-512 108.00 ( 0.00%) 110.00 ( -1.85%)
Min free-odr0-1024 117.00 ( 0.00%) 117.00 ( 0.00%)
Min free-odr0-2048 125.00 ( 0.00%) 125.00 ( 0.00%)
Min free-odr0-4096 131.00 ( 0.00%) 130.00 ( 0.76%)
Min free-odr0-8192 131.00 ( 0.00%) 131.00 ( 0.00%)
Min free-odr0-16384 131.00 ( 0.00%) 131.00 ( 0.00%)
Min total-odr0-1 495.00 ( 0.00%) 495.00 ( 0.00%)
Min total-odr0-2 357.00 ( 0.00%) 360.00 ( -0.84%)
Min total-odr0-4 290.00 ( 0.00%) 293.00 ( -1.03%)
Min total-odr0-8 251.00 ( 0.00%) 254.00 ( -1.20%)
Min total-odr0-16 233.00 ( 0.00%) 235.00 ( -0.86%)
Min total-odr0-32 223.00 ( 0.00%) 225.00 ( -0.90%)
Min total-odr0-64 218.00 ( 0.00%) 220.00 ( -0.92%)
Min total-odr0-128 215.00 ( 0.00%) 217.00 ( -0.93%)
Min total-odr0-256 240.00 ( 0.00%) 243.00 ( -1.25%)
Min total-odr0-512 272.00 ( 0.00%) 276.00 ( -1.47%)
Min total-odr0-1024 289.00 ( 0.00%) 289.00 ( 0.00%)
Min total-odr0-2048 303.00 ( 0.00%) 303.00 ( 0.00%)
Min total-odr0-4096 315.00 ( 0.00%) 314.00 ( 0.32%)
Min total-odr0-8192 318.00 ( 0.00%) 317.00 ( 0.31%)
Min total-odr0-16384 319.00 ( 0.00%) 318.00 ( 0.31%)
mm/page_alloc.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--
2.6.4
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