From: Mike Galbraith <efault@gmx.de>
To: netdev <netdev@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Miklos Szeredi <mszeredi@suse.cz>,
Rusty Russell <rusty@rustcorp.com.au>
Cc: David Miller <davem@davemloft.net>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [regression] benchmark throughput loss from a622cf6..f7160c7 pull
Date: Mon, 10 Nov 2008 11:35:50 +0100 [thread overview]
Message-ID: <1226313350.10058.16.camel@marge.simson.net> (raw)
Greetings,
While retesting that recent scheduler fixes/improvements had survived
integration into mainline, I found that we've regressed a bit since..
yesterday. In testing, it seems that CFS has finally passed what the
old O(1) scheduler could deliver in scalability and throughput, but we
already lost a bit.
Reverting 984f2f3 cd83e42 2d3854a and 6209344 recovered the loss.
2.6.22.19-smp virgin
volanomark 130504 129530 129438 messages/sec avg 129824.00 1.000
tbench 40 1151.58 1131.62 1151.66 MB/sec avg 1144.95 1.000
tbench 160 1113.80 1108.12 1103.16 MB/sec avg 1108.36 1.000
netperf TCP_RR 421568.71 418142.64 417817.28 rr/sec avg 419176.21 1.000
pipe-test 3.37 usecs/loop 1.000
2.6.25.19-smp virgin
volanomark 128967 125653 125913 messages/sec avg 126844.33 .977
tbench 40 1036.35 1031.72 1027.86 MB/sec avg 1031.97 .901
tbench 160 578.310 571.059 569.219 MB/sec avg 572.86 .516
netperf TCP_RR 414134.81 415001.04 413729.41 rr/sec avg 414288.42 .988
pipe-test 3.19 usecs/loop .946
WIP! incomplete clock back-port, salt to taste. (cya O(1), enjoy retirement)
2.6.25.19-smp + last_buddy + WIP_25..28-rc3_sched_clock + native_read_tsc()
volanomark 146280 136047 137204 messages/sec avg 139843.66 1.077
tbench 40 1232.60 1225.91 1222.56 MB/sec avg 1227.02 1.071
tbench 160 1226.35 1219.37 1223.69 MB/sec avg 1223.13 1.103
netperf TCP_RR 424816.34 425735.14 423583.85 rr/sec avg 424711.77 1.013
pipe-test 3.13 usecs/loop .928
2.6.26.7-smp + last_buddy + v2.6.26..v2.6.28-rc3_sched_clock + native_read_tsc()
volanomark 149085 137944 139815 messages/sec avg 142281.33 1.095
tbench 40 1171.22 1169.65 1170.87 MB/sec avg 1170.58 1.022
tbench 160 1163.11 1173.36 1170.61 MB/sec avg 1169.02 1.054
netperf TCP_RR 410945.22 412223.92 408210.13 rr/sec avg 410459.75 .979
pipe-test 3.41 usecs/loop 1.004
v2.6.28-rc3-249-ga622cf6-smp
volanomark 137792 132961 133672 messages/sec avg 134808.33 1.038
volanomark 144302 132915 133440 messages/sec avg 136885.66 1.054
volanomark 143559 130598 133110 messages/sec avg 135755.66 1.045 avg 135816.55 1.000
tbench 40 1154.37 1157.23 1154.37 MB/sec avg 1155.32 1.009 1155.32 1.000
tbench 160 1157.25 1153.35 1154.37 MB/sec avg 1154.99 1.042 1154.99 1.000
netperf TCP_RR 385895.13 385675.89 386651.03 rr/sec avg 386074.01 .921 386074.01 1.000
pipe-test 3.41 usecs/loop 1.004
v2.6.28-rc4-smp
volanomark 138733 129958 130647 messages/sec avg 133112.66 1.025
volanomark 141951 133862 131652 messages/sec avg 135821.66 1.046
volanomark 136182 134131 132926 messages/sec avg 134413.00 1.035 avg 134449.10 .989
tbench 40 1140.48 1137.64 1140.91 MB/sec avg 1139.67 .995 1139.67 .986
tbench 160 1128.23 1131.14 1131.19 MB/sec avg 1130.18 1.019 1130.18 .978
netperf TCP_RR 371695.82 374002.70 371824.78 rr/sec avg 372507.76 .888 372507.76 .964
pipe-test 3.41 usecs/loop 1.004
v2.6.28-rc4-smp + revert 984f2f3 cd83e42 2d3854a
volanomark 143305 132649 133175 messages/sec avg 136376.33 1.050
volanomark 139049 131403 132571 messages/sec avg 134341.00 1.025
volanomark 141499 131572 131461 messages/sec avg 134844.00 1.034 avg 135187.11 1.005
tbench 40 1154.79 1153.41 1152.18 MB/sec avg 1153.46 1.007 1153.46 .998
tbench 160 1148.72 1143.80 1143.96 MB/sec avg 1145.49 1.033 1145.49 .991
netperf TCP_RR 379334.51 379871.08 376917.76 rr/sec avg 378707.78 .903 378707.78 .980
pipe-test 3.36 usecs/loop (hm) .997
v2.6.28-rc4-smp + revert 984f2f3 cd83e42 2d3854a + 6209344
volanomark 143875 133182 133451 messages/sec avg 136836.00 1.054
volanomark 142314 134700 133783 messages/sec avg 136932.33 1.054
volanomark 141798 132922 132406 messages/sec avg 135708.66 1.045 avg 136492.33 1.004
tbench 40 1160.33 1157.89 1156.12 MB/sec avg 1158.11 1.011 1158.11 1.002
tbench 160 1150.42 1150.49 1151.83 MB/sec avg 1150.91 1.038 1150.91 .996
netperf TCP_RR 385468.32 386160.09 385377.01 rr/sec avg 385668.47 .920 385668.47 .998
pipe-test 3.37 usecs/loop 1.000
next reply other threads:[~2008-11-10 10:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-10 10:35 Mike Galbraith [this message]
2008-11-10 12:50 ` [regression] benchmark throughput loss from a622cf6..f7160c7 pull Ingo Molnar
2008-11-10 13:22 ` Mike Galbraith
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