Content-Type: multipart/mixed; boundary="===============8336440064240317915==" MIME-Version: 1.0 From: Fengguang Wu To: lkp@lists.01.org Subject: [map_pages] 66431c4de99: -55.4% proc-vmstat.pgfault Date: Wed, 19 Mar 2014 10:21:21 +0800 Message-ID: <20140319022121.GA14115@localhost> List-Id: --===============8336440064240317915== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi Kirill, FYI, we noticed decreased page faults and increased mapped pages on git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 66431c4de9921a9b3c7f3556bada4285912aedb7 ("mm: implement ->map_pages= for page cache") c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 591248 ~ 0% -56.1% 259664 ~ 0% lkp-t410/micro/netperf/120s-200= %-TCP_MAERTS 5090162 ~ 0% -55.4% 2272005 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 5681411 ~ 0% -55.4% 2531670 ~ 0% TOTAL proc-vmstat.pgfault c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 1413 ~ 0% +95.2% 2759 ~ 1% lkp-t410/micro/netperf/120s-200= %-TCP_MAERTS 1458 ~ 0% +94.4% 2835 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 2872 ~ 0% +94.8% 5594 ~ 1% TOTAL time.maximum_resident_set= _size c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 4332 ~ 0% +48.9% 6449 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 4332 ~ 0% +48.9% 6449 ~ 0% TOTAL numa-meminfo.node1.Mapped c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 1082 ~ 0% +48.9% 1612 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 1082 ~ 0% +48.9% 1612 ~ 0% TOTAL numa-vmstat.node1.nr_mapp= ed c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 4349 ~ 0% +48.6% 6465 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 4349 ~ 0% +48.6% 6465 ~ 0% TOTAL numa-meminfo.node0.Mapped c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 1087 ~ 0% +48.7% 1616 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 1087 ~ 0% +48.7% 1616 ~ 0% TOTAL numa-vmstat.node0.nr_mapp= ed c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 7426 ~ 0% +45.1% 10773 ~ 0% lkp-t410/micro/netperf/120s-200= %-TCP_MAERTS 8682 ~ 0% +48.7% 12911 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 16108 ~ 0% +47.0% 23684 ~ 0% TOTAL meminfo.Mapped c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 1852 ~ 0% +45.4% 2693 ~ 0% lkp-t410/micro/netperf/120s-200= %-TCP_MAERTS 2170 ~ 0% +48.7% 3227 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 4022 ~ 0% +47.2% 5921 ~ 0% TOTAL proc-vmstat.nr_mapped c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 0.93 ~ 4% +24.2% 1.15 ~ 5% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 0.93 ~ 4% +24.2% 1.15 ~ 5% TOTAL perf-profile.cpu-cycles.v= fs_write.sys_write.system_call_fastpath.write c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 1968 ~ 0% +17.5% 2313 ~ 1% lkp-t410/micro/netperf/120s-200= %-TCP_MAERTS 1968 ~ 0% +17.5% 2313 ~ 1% TOTAL proc-vmstat.pgactivate c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 3.34 ~ 1% -10.7% 2.98 ~ 2% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 3.34 ~ 1% -10.7% 2.98 ~ 2% TOTAL perf-profile.cpu-cycles.e= xt4_mark_iloc_dirty.ext4_mark_inode_dirty.ext4_dirty_inode.__mark_inode_dir= ty.generic_write_end c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 3258 ~ 0% -59.1% 1331 ~ 0% lkp-t410/micro/netperf/120s-200= %-TCP_MAERTS 162827 ~ 0% -59.3% 66299 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 166085 ~ 0% -59.3% 67630 ~ 0% TOTAL time.minor_page_faults c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 5093318 ~ 0% -55.7% 2257903 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 5093318 ~ 0% -55.7% 2257903 ~ 0% TOTAL perf-stat.minor-faults c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 5092110 ~ 0% -55.7% 2257193 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 5092110 ~ 0% -55.7% 2257193 ~ 0% TOTAL perf-stat.page-faults c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 3.698e+11 ~ 0% -11.3% 3.28e+11 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 3.698e+11 ~ 0% -11.3% 3.28e+11 ~ 0% TOTAL perf-stat.L1-icache-load-= misses c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 45.26 ~ 3% +8.4% 49.05 ~ 3% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 45.26 ~ 3% +8.4% 49.05 ~ 3% TOTAL iostat.sdd.wrqm/s c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 1.824e+10 ~ 0% -5.3% 1.727e+10 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 1.824e+10 ~ 0% -5.3% 1.727e+10 ~ 0% TOTAL perf-stat.branch-misses c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 2.802e+12 ~ 0% -4.7% 2.67e+12 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 2.802e+12 ~ 0% -4.7% 2.67e+12 ~ 0% TOTAL perf-stat.L1-icache-loads c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 7.246e+08 ~ 2% -4.5% 6.922e+08 ~ 1% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 7.246e+08 ~ 2% -4.5% 6.922e+08 ~ 1% TOTAL perf-stat.iTLB-load-misses c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 3.314e+09 ~ 1% -4.8% 3.154e+09 ~ 1% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 3.314e+09 ~ 1% -4.8% 3.154e+09 ~ 1% TOTAL perf-stat.LLC-load-misses c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 3.324e+09 ~ 1% -4.4% 3.179e+09 ~ 0% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 3.324e+09 ~ 1% -4.4% 3.179e+09 ~ 0% TOTAL perf-stat.node-loads c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 3.554e+08 ~ 3% +5.7% 3.755e+08 ~ 1% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 3.554e+08 ~ 3% +5.7% 3.755e+08 ~ 1% TOTAL perf-stat.node-store-miss= es c9161c06019b342 66431c4de9921a9b3c7f3556b = --------------- ------------------------- = 8.409e+12 ~ 0% -2.5% 8.196e+12 ~ 1% lkp-ws02/micro/dd-write/11HDD-J= BOD-cfq-ext4-10dd 8.409e+12 ~ 0% -2.5% 8.196e+12 ~ 1% TOTAL perf-stat.cpu-cycles Legend: ~XX% - stddev percent [+-]XX% - change percent time.minor_page_faults 170000 ++---------------------------------------------------------------= -+ 160000 *+*.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.*= .* | = | 150000 ++ = | 140000 ++ = | 130000 ++ = | 120000 ++ = | | = | 110000 ++ = | 100000 ++ = | 90000 ++ = | 80000 ++ = | | = | 70000 O+O O O O O O O O O O O O O O O O O O O O O O O = | 60000 ++---------------------------------------------------------------= -+ perf-stat.page-faults 5.5e+06 ++--------------------------------------------------------------= -+ | = | 5e+06 *+*.*..*.*.*.*.*.*..*.*.*.*.*.*..*.*.*.*.*.*..*.*.*.*.*.*..*.*.*= .* | = | 4.5e+06 ++ = | | = | 4e+06 ++ = | | = | 3.5e+06 ++ = | | = | 3e+06 ++ = | | = | 2.5e+06 ++ = | O O O O O O O O O O O O O O O O O O O O O O O O = | 2e+06 ++--------------------------------------------------------------= -+ perf-stat.minor-faults 5.5e+06 ++--------------------------------------------------------------= -+ | = | 5e+06 *+*.*..*.*.*.*.*.*..*.*.*.*.*.*..*.*.*.*.*.*..*.*.*.*.*.*..*.*.*= .* | = | 4.5e+06 ++ = | | = | 4e+06 ++ = | | = | 3.5e+06 ++ = | | = | 3e+06 ++ = | | = | 2.5e+06 ++ = | O O O O O O O O O O O O O O O O O O O O O O O O = | 2e+06 ++--------------------------------------------------------------= -+ [*] bisect-good sample [O] bisect-bad sample Thanks, Fengguang 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