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Date: Fri, 30 Nov 2012 11:41:45 +0000
From: Mel Gorman <mgorman@...e.de>
To: Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Andrea Arcangeli <aarcange@...hat.com>,
Ingo Molnar <mingo@...nel.org>
Cc: Rik van Riel <riel@...hat.com>,
Johannes Weiner <hannes@...xchg.org>,
Hugh Dickins <hughd@...gle.com>,
Thomas Gleixner <tglx@...utronix.de>,
Paul Turner <pjt@...gle.com>, Hillf Danton <dhillf@...il.com>,
Lee Schermerhorn <Lee.Schermerhorn@...com>,
Alex Shi <lkml.alex@...il.com>,
Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Linux-MM <linux-mm@...ck.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Results for balancenuma v8, autonuma-v28fast and numacore-20121126
This is an another insanely long mail. Short summary, based on the results
of what is in tip/master right now, I think if we're going to merge
anything for v3.8 it should be the "Automatic NUMA Balancing V8". It does
reasonably well for many of the workloads and AFAIK there is no reason why
numacore or autonuma could not be rebased on top with the view to merging
proper scheduling and placement policies in 3.9. That way we would have
a comparison between a do-nothing kernel, the most basic of migration
policies and something more complex with some sort of logical progression.
This time I added the NAS Parallel Benchmark running with MPI and OpenMP
to see how they fared. From the series "Automatic NUMA Balancing V8",
the kernels tested were
stats-v6r15 Patches 1-10. TLB optimisations, migration stats. This
is based on the V6 release but the patches have not
changed since.
balancenuma-v8r6 Patches 1-46. Full series
The other two kernels were
numacore-20121126 is a pull of tip/master on November 26rd, 2012. It ends
up being a 3.7-rc6 based kernel
autonuma-v28fast This is a rebased version of Andrea's autonuma-v28fast
branch with Hugh's THP migration patch on top. Hopefully Andrea
and Hugh will not mind but I took the liberty of publishing the
result as the mm-autonuma-v28fastr4-mels-rebase branch in
git://git.kernel.org/pub/scm/linux/kernel/git/mel/linux-balancenuma.git
I'm treating stats-v6r15 as the baseline as it has the same TLB optimisations
shared between balancenuma and numacore. This may not be fair to autonuma
depending on how it avoids flushing the TLB.
All of these tests were run unattended via MMTests. Any errors in the
methodology would be applied evenly to all kernels tested. There were
monitors running but *not* profiling. The heaviest monitor would read
numa_maps every 10 seconds and is only read one per address space and
reused by all threads. This will affect peaks because it means the monitors
contend on some of the same locks the PTE scanner does for example.
AUTONUMA BENCH
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
User NUMA01 66979.15 ( 0.00%) 24590.05 ( 63.29%) 30815.06 ( 53.99%) 56701.65 ( 15.34%)
User NUMA01_THEADLOCAL 61248.25 ( 0.00%) 18607.40 ( 69.62%) 17124.49 ( 72.04%) 17344.99 ( 71.68%)
User NUMA02 6645.34 ( 0.00%) 2116.64 ( 68.15%) 2209.76 ( 66.75%) 2073.78 ( 68.79%)
User NUMA02_SMT 2925.65 ( 0.00%) 989.22 ( 66.19%) 1020.53 ( 65.12%) 1000.81 ( 65.79%)
System NUMA01 45.46 ( 0.00%) 1038.13 (-2183.61%) 195.90 (-330.93%) 289.11 (-535.97%)
System NUMA01_THEADLOCAL 46.15 ( 0.00%) 556.78 (-1106.46%) 72.36 (-56.79%) 112.87 (-144.57%)
System NUMA02 1.66 ( 0.00%) 25.38 (-1428.92%) 7.49 (-351.20%) 9.71 (-484.94%)
System NUMA02_SMT 0.92 ( 0.00%) 10.70 (-1063.04%) 2.41 (-161.96%) 3.40 (-269.57%)
Elapsed NUMA01 1513.72 ( 0.00%) 571.78 ( 62.23%) 795.56 ( 47.44%) 1292.04 ( 14.64%)
Elapsed NUMA01_THEADLOCAL 1390.72 ( 0.00%) 420.02 ( 69.80%) 380.84 ( 72.62%) 379.59 ( 72.71%)
Elapsed NUMA02 167.65 ( 0.00%) 50.52 ( 69.87%) 53.22 ( 68.26%) 49.17 ( 70.67%)
Elapsed NUMA02_SMT 164.38 ( 0.00%) 48.26 ( 70.64%) 48.10 ( 70.74%) 46.91 ( 71.46%)
CPU NUMA01 4427.00 ( 0.00%) 4482.00 ( -1.24%) 3897.00 ( 11.97%) 4410.00 ( 0.38%)
CPU NUMA01_THEADLOCAL 4407.00 ( 0.00%) 4562.00 ( -3.52%) 4515.00 ( -2.45%) 4599.00 ( -4.36%)
CPU NUMA02 3964.00 ( 0.00%) 4239.00 ( -6.94%) 4165.00 ( -5.07%) 4236.00 ( -6.86%)
CPU NUMA02_SMT 1780.00 ( 0.00%) 2071.00 (-16.35%) 2126.00 (-19.44%) 2140.00 (-20.22%)
numacore is the best at running the adverse numa01 workload. autonuma does
respectably but balancenuma does not cope with this case. It improves on the
baseline but it does not know how to interleave for this type of workload.
For the other workloads that are friendlier to NUMA, the three trees do
not differ by massive amounts. There are not multiple runs because it
takes too long but there is a possibility the results are within the noise.
Where we differ is in system CPU usage. In all cases, numacore uses more
system CPU. It is likely it is compensating better for this overhead
with better placement. With this higher overhead it ends up with a tie
on everything except the adverse workload. Take NUMA01_THREADLOCAL as an
example -- numacore uses roughly 3-4 times more system CPU than autonuma
or balancenuma. autonumas cost could be hidden in kernel threads but that's
not true for balancenuma.
MMTests Statistics: duration
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
User 137805.34 46310.68 51177.02 77128.10
System 94.81 1631.75 278.81 415.74
Elapsed 3245.05 1101.08 1287.83 1776.42
The overall elapsed time is differences in how well numa01 is handled. There
are large differences in the system CPU in the different trees. numacore
is using over twice the amount of CPU as either autonuma or balancenuma.
MMTests Statistics: vmstat
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
Page Ins 42892 42804 42988 42616
Page Outs 31156 12352 13980 19192
Swap Ins 0 0 0 0
Swap Outs 0 0 0 0
Direct pages scanned 0 0 0 0
Kswapd pages scanned 0 0 0 0
Kswapd pages reclaimed 0 0 0 0
Direct pages reclaimed 0 0 0 0
Kswapd efficiency 100% 100% 100% 100%
Kswapd velocity 0.000 0.000 0.000 0.000
Direct efficiency 100% 100% 100% 100%
Direct velocity 0.000 0.000 0.000 0.000
Percentage direct scans 0% 0% 0% 0%
Page writes by reclaim 0 0 0 0
Page writes file 0 0 0 0
Page writes anon 0 0 0 0
Page reclaim immediate 0 0 0 0
Page rescued immediate 0 0 0 0
Slabs scanned 0 0 0 0
Direct inode steals 0 0 0 0
Kswapd inode steals 0 0 0 0
Kswapd skipped wait 0 0 0 0
THP fault alloc 16022 13747 19639 17857
THP collapse alloc 9 4 51 3
THP splits 2 1 7 6
THP fault fallback 0 0 0 0
THP collapse fail 0 0 0 0
Compaction stalls 0 0 0 0
Compaction success 0 0 0 0
Compaction failures 0 0 0 0
Page migrate success 0 0 0 10303098
Page migrate failure 0 0 0 0
Compaction pages isolated 0 0 0 0
Compaction migrate scanned 0 0 0 0
Compaction free scanned 0 0 0 0
Compaction cost 0 0 0 10694
NUMA PTE updates 0 0 0 147254249
NUMA hint faults 0 0 0 688568
NUMA hint local faults 0 0 0 542906
NUMA pages migrated 0 0 0 10303098
AutoNUMA cost 0 0 0 4669
Not much to usefully interpret here other than noting we generally avoid
splitting THP. For balancenuma, note what the scan adaption does to the
number of PTE updates and the number of faults incurred. A policy may
not necessarily like this. It depends on its requirements but if it wants
higher PTE scan rates it will have to compensate for it.
Next is the specjbb. There are 4 separate configurations
multiple JVMs, THP
multiple JVMs, no THP
single JVM, THP
single JVM, no THP
SPECJBB: Multiple JVMs (one per node, 4 nodes), THP is enabled
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
Mean 1 31600.00 ( 0.00%) 27467.75 (-13.08%) 31006.75 ( -1.88%) 31360.25 ( -0.76%)
Mean 2 62937.75 ( 0.00%) 55240.00 (-12.23%) 65086.25 ( 3.41%) 61924.00 ( -1.61%)
Mean 3 91147.25 ( 0.00%) 81735.50 (-10.33%) 95839.00 ( 5.15%) 90739.00 ( -0.45%)
Mean 4 114616.50 ( 0.00%) 94354.75 (-17.68%) 124129.50 ( 8.30%) 116105.25 ( 1.30%)
Mean 5 136264.25 ( 0.00%) 107829.25 (-20.87%) 150632.00 ( 10.54%) 139659.25 ( 2.49%)
Mean 6 152161.75 ( 0.00%) 123039.75 (-19.14%) 175110.25 ( 15.08%) 157911.25 ( 3.78%)
Mean 7 150385.25 ( 0.00%) 137133.00 ( -8.81%) 180693.25 ( 20.15%) 160335.50 ( 6.62%)
Mean 8 146897.75 ( 0.00%) 94324.75 (-35.79%) 184689.00 ( 25.73%) 159786.50 ( 8.77%)
Mean 9 141853.25 ( 0.00%) 103640.75 (-26.94%) 183592.75 ( 29.42%) 153544.25 ( 8.24%)
Mean 10 145524.00 ( 0.00%) 113260.25 (-22.17%) 179482.75 ( 23.34%) 145893.50 ( 0.25%)
Mean 11 129652.25 ( 0.00%) 98646.75 (-23.91%) 174891.50 ( 34.89%) 138897.75 ( 7.13%)
Mean 12 123313.25 ( 0.00%) 124340.75 ( 0.83%) 168959.25 ( 37.02%) 138027.00 ( 11.93%)
Mean 13 122442.75 ( 0.00%) 107168.25 (-12.47%) 164761.50 ( 34.56%) 135222.50 ( 10.44%)
Mean 14 120407.50 ( 0.00%) 107057.00 (-11.09%) 163350.50 ( 35.66%) 132712.25 ( 10.22%)
Mean 15 118236.50 ( 0.00%) 106874.00 ( -9.61%) 160638.75 ( 35.86%) 129598.75 ( 9.61%)
Mean 16 115439.00 ( 0.00%) 128464.75 ( 11.28%) 158838.00 ( 37.59%) 122542.50 ( 6.15%)
Mean 17 111400.25 ( 0.00%) 127869.50 ( 14.78%) 157191.25 ( 41.10%) 129454.50 ( 16.21%)
Mean 18 114168.50 ( 0.00%) 121763.00 ( 6.65%) 154828.75 ( 35.61%) 125674.25 ( 10.08%)
Mean 19 112622.25 ( 0.00%) 114235.50 ( 1.43%) 154380.25 ( 37.08%) 122692.00 ( 8.94%)
Mean 20 109717.75 ( 0.00%) 109561.50 ( -0.14%) 153291.75 ( 39.71%) 122799.25 ( 11.92%)
Mean 21 106640.00 ( 0.00%) 103904.75 ( -2.56%) 151053.75 ( 41.65%) 118169.50 ( 10.81%)
Mean 22 105173.00 ( 0.00%) 107866.00 ( 2.56%) 149248.75 ( 41.91%) 120062.00 ( 14.16%)
Mean 23 104009.50 ( 0.00%) 84539.25 (-18.72%) 147848.25 ( 42.15%) 119518.25 ( 14.91%)
Mean 24 102713.75 ( 0.00%) 85635.25 (-16.63%) 145843.25 ( 41.99%) 120339.75 ( 17.16%)
Stddev 1 1366.60 ( 0.00%) 1135.04 ( 16.94%) 1619.94 (-18.54%) 1370.51 ( -0.29%)
Stddev 2 918.86 ( 0.00%) 3552.45 (-286.61%) 1024.58 (-11.51%) 813.06 ( 11.51%)
Stddev 3 1066.85 ( 0.00%) 881.39 ( 17.38%) 1176.32 (-10.26%) 1356.60 (-27.16%)
Stddev 4 1493.03 ( 0.00%) 5298.20 (-254.86%) 1587.00 ( -6.29%) 1271.82 ( 14.82%)
Stddev 5 877.10 ( 0.00%) 7526.59 (-758.13%) 1298.12 (-48.00%) 1030.81 (-17.53%)
Stddev 6 2351.71 ( 0.00%) 16420.61 (-598.24%) 1122.37 ( 52.27%) 1276.07 ( 45.74%)
Stddev 7 1259.53 ( 0.00%) 11596.65 (-820.71%) 1777.67 (-41.14%) 3225.46 (-156.08%)
Stddev 8 2912.35 ( 0.00%) 18376.73 (-530.99%) 2428.53 ( 16.61%) 2997.79 ( -2.93%)
Stddev 9 6512.12 ( 0.00%) 3668.11 ( 43.67%) 3311.86 ( 49.14%) 5116.28 ( 21.43%)
Stddev 10 6096.83 ( 0.00%) 6969.09 (-14.31%) 6918.63 (-13.48%) 4623.63 ( 24.16%)
Stddev 11 9487.80 ( 0.00%) 8337.58 ( 12.12%) 10122.20 ( -6.69%) 4651.18 ( 50.98%)
Stddev 12 8235.94 ( 0.00%) 12325.53 (-49.66%) 13754.33 (-67.00%) 3002.66 ( 63.54%)
Stddev 13 8345.11 ( 0.00%) 12512.09 (-49.93%) 15335.24 (-83.76%) 2206.88 ( 73.55%)
Stddev 14 8752.13 ( 0.00%) 1689.34 ( 80.70%) 15529.14 (-77.43%) 6095.85 ( 30.35%)
Stddev 15 7611.56 ( 0.00%) 3735.24 ( 50.93%) 16501.90 (-116.80%) 4713.94 ( 38.07%)
Stddev 16 8223.93 ( 0.00%) 3621.59 ( 55.96%) 16426.27 (-99.74%) 5322.68 ( 35.28%)
Stddev 17 8829.49 ( 0.00%) 100.89 ( 98.86%) 16633.79 (-88.39%) 3884.20 ( 56.01%)
Stddev 18 7053.69 ( 0.00%) 1390.26 ( 80.29%) 18474.77 (-161.92%) 4296.24 ( 39.09%)
Stddev 19 6775.02 ( 0.00%) 1335.05 ( 80.29%) 18046.60 (-166.37%) 3698.15 ( 45.41%)
Stddev 20 7481.59 ( 0.00%) 4460.51 ( 40.38%) 17890.82 (-139.13%) 3406.39 ( 54.47%)
Stddev 21 8100.05 ( 0.00%) 2934.02 ( 63.78%) 19041.29 (-135.08%) 2966.54 ( 63.38%)
Stddev 22 6507.61 ( 0.00%) 3128.61 ( 51.92%) 17399.30 (-167.37%) 4242.58 ( 34.81%)
Stddev 23 6113.03 ( 0.00%) 4226.82 ( 30.86%) 18573.42 (-203.83%) 5575.06 ( 8.80%)
Stddev 24 5128.26 ( 0.00%) 1695.29 ( 66.94%) 18824.94 (-267.08%) 4011.27 ( 21.78%)
TPut 1 126400.00 ( 0.00%) 109871.00 (-13.08%) 124027.00 ( -1.88%) 125441.00 ( -0.76%)
TPut 2 251751.00 ( 0.00%) 220960.00 (-12.23%) 260345.00 ( 3.41%) 247696.00 ( -1.61%)
TPut 3 364589.00 ( 0.00%) 326942.00 (-10.33%) 383356.00 ( 5.15%) 362956.00 ( -0.45%)
TPut 4 458466.00 ( 0.00%) 377419.00 (-17.68%) 496518.00 ( 8.30%) 464421.00 ( 1.30%)
TPut 5 545057.00 ( 0.00%) 431317.00 (-20.87%) 602528.00 ( 10.54%) 558637.00 ( 2.49%)
TPut 6 608647.00 ( 0.00%) 492159.00 (-19.14%) 700441.00 ( 15.08%) 631645.00 ( 3.78%)
TPut 7 601541.00 ( 0.00%) 548532.00 ( -8.81%) 722773.00 ( 20.15%) 641342.00 ( 6.62%)
TPut 8 587591.00 ( 0.00%) 377299.00 (-35.79%) 738756.00 ( 25.73%) 639146.00 ( 8.77%)
TPut 9 567413.00 ( 0.00%) 414563.00 (-26.94%) 734371.00 ( 29.42%) 614177.00 ( 8.24%)
TPut 10 582096.00 ( 0.00%) 453041.00 (-22.17%) 717931.00 ( 23.34%) 583574.00 ( 0.25%)
TPut 11 518609.00 ( 0.00%) 394587.00 (-23.91%) 699566.00 ( 34.89%) 555591.00 ( 7.13%)
TPut 12 493253.00 ( 0.00%) 497363.00 ( 0.83%) 675837.00 ( 37.02%) 552108.00 ( 11.93%)
TPut 13 489771.00 ( 0.00%) 428673.00 (-12.47%) 659046.00 ( 34.56%) 540890.00 ( 10.44%)
TPut 14 481630.00 ( 0.00%) 428228.00 (-11.09%) 653402.00 ( 35.66%) 530849.00 ( 10.22%)
TPut 15 472946.00 ( 0.00%) 427496.00 ( -9.61%) 642555.00 ( 35.86%) 518395.00 ( 9.61%)
TPut 16 461756.00 ( 0.00%) 513859.00 ( 11.28%) 635352.00 ( 37.59%) 490170.00 ( 6.15%)
TPut 17 445601.00 ( 0.00%) 511478.00 ( 14.78%) 628765.00 ( 41.10%) 517818.00 ( 16.21%)
TPut 18 456674.00 ( 0.00%) 487052.00 ( 6.65%) 619315.00 ( 35.61%) 502697.00 ( 10.08%)
TPut 19 450489.00 ( 0.00%) 456942.00 ( 1.43%) 617521.00 ( 37.08%) 490768.00 ( 8.94%)
TPut 20 438871.00 ( 0.00%) 438246.00 ( -0.14%) 613167.00 ( 39.71%) 491197.00 ( 11.92%)
TPut 21 426560.00 ( 0.00%) 415619.00 ( -2.56%) 604215.00 ( 41.65%) 472678.00 ( 10.81%)
TPut 22 420692.00 ( 0.00%) 431464.00 ( 2.56%) 596995.00 ( 41.91%) 480248.00 ( 14.16%)
TPut 23 416038.00 ( 0.00%) 338157.00 (-18.72%) 591393.00 ( 42.15%) 478073.00 ( 14.91%)
TPut 24 410855.00 ( 0.00%) 342541.00 (-16.63%) 583373.00 ( 41.99%) 481359.00 ( 17.16%)
numacore is not handling the multiple JVM case well with numerous regressions
for lower number of threads. It is a bit better around the expected peak
of 12 warehouses per JVM for this configuration. There are also large
variances between the different JVMs throughput but note again that this
improves as the number of warehouses increase.
autonuma generally does very well in terms of throughput but the variance
between JVMs is massive.
balancenuma does reasonably well and improves upon the baseline kernel. It
shows regressions for small warehouses which was not evident in V6 and so it
is known to vary a bit. However, as the number of warehouses increases, it
shows some performance improvement and the variances are not too bad. It's
far short of what autonuma achieved but it's respectable.
SPECJBB PEAKS
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
Expctd Warehouse 12.00 ( 0.00%) 12.00 ( 0.00%) 12.00 ( 0.00%) 12.00 ( 0.00%)
Expctd Peak Bops 493253.00 ( 0.00%) 497363.00 ( 0.83%) 675837.00 ( 37.02%) 552108.00 ( 11.93%)
Actual Warehouse 6.00 ( 0.00%) 7.00 ( 16.67%) 8.00 ( 33.33%) 7.00 ( 16.67%)
Actual Peak Bops 608647.00 ( 0.00%) 548532.00 ( -9.88%) 738756.00 ( 21.38%) 641342.00 ( 5.37%)
SpecJBB Bops 451164.00 ( 0.00%) 439778.00 ( -2.52%) 624688.00 ( 38.46%) 503634.00 ( 11.63%)
SpecJBB Bops/JVM 112791.00 ( 0.00%) 109945.00 ( -2.52%) 156172.00 ( 38.46%) 125909.00 ( 11.63%)
Note the peak numbers for numacore. The peak performance regresses 9.88%
from the baseline kernel. In a previous 3.7-rc6 comparison it showed an
improvement in the specjbb score of 0.52% at the peak. This is not a fair
comparison any more because of the large differences in kernels but it's
still the case that the specjbb score looks better than the actual peak
throughput because of how the specjbb score is calculated.
autonuma sees an 21.38% performance gain at its peak and a 38.46% gain in
its specjbb score.
balancenuma does reasonably well with a 5.37% gain at its peak and 11.63%
on its overall specjbb score. Not as good as autonuma, but respectable.
MMTests Statistics: duration
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
User 177410.90 171382.97 177112.15 177078.17
System 175.57 5976.48 219.87 514.57
Elapsed 4035.05 4037.94 4037.14 4030.78
Note the system CPU usage. numacore is using 11 times more system CPU
than balancenuma is and 27 times more than autonuma (usual disclaimer
about threads).
MMTests Statistics: vmstat
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
Page Ins 38092 37968 37632 66512
Page Outs 50240 52836 48468 64196
Swap Ins 0 0 0 0
Swap Outs 0 0 0 0
Direct pages scanned 0 0 0 0
Kswapd pages scanned 0 0 0 0
Kswapd pages reclaimed 0 0 0 0
Direct pages reclaimed 0 0 0 0
Kswapd efficiency 100% 100% 100% 100%
Kswapd velocity 0.000 0.000 0.000 0.000
Direct efficiency 100% 100% 100% 100%
Direct velocity 0.000 0.000 0.000 0.000
Percentage direct scans 0% 0% 0% 0%
Page writes by reclaim 0 0 0 0
Page writes file 0 0 0 0
Page writes anon 0 0 0 0
Page reclaim immediate 0 0 0 0
Page rescued immediate 0 0 0 0
Slabs scanned 0 0 0 0
Direct inode steals 0 0 0 0
Kswapd inode steals 0 0 0 0
Kswapd skipped wait 0 0 0 0
THP fault alloc 65717 49223 56929 67137
THP collapse alloc 125 55 462 122
THP splits 370 211 383 367
THP fault fallback 0 0 0 0
THP collapse fail 0 0 0 0
Compaction stalls 0 0 0 0
Compaction success 0 0 0 0
Compaction failures 0 0 0 0
Page migrate success 0 0 0 51459156
Page migrate failure 0 0 0 0
Compaction pages isolated 0 0 0 0
Compaction migrate scanned 0 0 0 0
Compaction free scanned 0 0 0 0
Compaction cost 0 0 0 53414
NUMA PTE updates 0 0 0 415931339
NUMA hint faults 0 0 0 3089027
NUMA hint local faults 0 0 0 936873
NUMA pages migrated 0 0 0 51459156
AutoNUMA cost 0 0 0 19334
The main takeaways here is that there were THP allocations and all the
trees split THPs at very roughly the same rate overall. Migration stats
are not available for numacore or autonuma but the migration stats for
balancenuma show that it's migrating at a rate 49MB/sec on average. This
is far higher than I'd like and a proper policy on top should be able to
help get that down.
SPECJBB: Multiple JVMs (one per node, 4 nodes), THP is disabled
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
Mean 1 25460.75 ( 0.00%) 19041.25 (-25.21%) 25538.50 ( 0.31%) 25889.25 ( 1.68%)
Mean 2 53520.75 ( 0.00%) 36285.25 (-32.20%) 56045.00 ( 4.72%) 52424.00 ( -2.05%)
Mean 3 77555.00 ( 0.00%) 53221.25 (-31.38%) 83147.25 ( 7.21%) 76898.75 ( -0.85%)
Mean 4 100030.00 ( 0.00%) 65234.00 (-34.79%) 108965.25 ( 8.93%) 98110.75 ( -1.92%)
Mean 5 120309.25 ( 0.00%) 76315.25 (-36.57%) 132176.00 ( 9.86%) 119555.75 ( -0.63%)
Mean 6 136112.50 ( 0.00%) 89173.00 (-34.49%) 150532.75 ( 10.59%) 136993.00 ( 0.65%)
Mean 7 135358.75 ( 0.00%) 93026.00 (-31.27%) 159185.00 ( 17.60%) 138854.25 ( 2.58%)
Mean 8 134319.50 ( 0.00%) 97704.50 (-27.26%) 162122.25 ( 20.70%) 138954.25 ( 3.45%)
Mean 9 132189.75 ( 0.00%) 97305.75 (-26.39%) 161477.25 ( 22.16%) 135756.75 ( 2.70%)
Mean 10 128023.25 ( 0.00%) 86914.50 (-32.11%) 159014.25 ( 24.21%) 130314.75 ( 1.79%)
Mean 11 119226.75 ( 0.00%) 95627.25 (-19.79%) 155241.50 ( 30.21%) 123851.00 ( 3.88%)
Mean 12 111769.50 ( 0.00%) 88829.00 (-20.52%) 150002.75 ( 34.21%) 115657.25 ( 3.48%)
Mean 13 110908.25 ( 0.00%) 105153.00 ( -5.19%) 146769.75 ( 32.33%) 113916.00 ( 2.71%)
Mean 14 109063.25 ( 0.00%) 103905.50 ( -4.73%) 144350.50 ( 32.35%) 116530.75 ( 6.85%)
Mean 15 105400.50 ( 0.00%) 102274.25 ( -2.97%) 141991.50 ( 34.72%) 116928.50 ( 10.94%)
Mean 16 106195.50 ( 0.00%) 100147.00 ( -5.70%) 141436.25 ( 33.18%) 114429.25 ( 7.75%)
Mean 17 102077.00 ( 0.00%) 98444.50 ( -3.56%) 139735.25 ( 36.89%) 113637.00 ( 11.32%)
Mean 18 101157.00 ( 0.00%) 96963.25 ( -4.15%) 137867.50 ( 36.29%) 113728.75 ( 12.43%)
Mean 19 99892.75 ( 0.00%) 95881.00 ( -4.02%) 135465.25 ( 35.61%) 112367.50 ( 12.49%)
Mean 20 100012.50 ( 0.00%) 93851.50 ( -6.16%) 134840.25 ( 34.82%) 112712.25 ( 12.70%)
Mean 21 97157.25 ( 0.00%) 92788.25 ( -4.50%) 133454.25 ( 37.36%) 107491.50 ( 10.64%)
Mean 22 97807.25 ( 0.00%) 90831.25 ( -7.13%) 130811.00 ( 33.74%) 108284.00 ( 10.71%)
Mean 23 94287.00 ( 0.00%) 88404.50 ( -6.24%) 129693.00 ( 37.55%) 106024.25 ( 12.45%)
Mean 24 94142.00 ( 0.00%) 86549.00 ( -8.07%) 127417.25 ( 35.35%) 103483.00 ( 9.92%)
Stddev 1 873.15 ( 0.00%) 819.01 ( 6.20%) 805.93 ( 7.70%) 982.04 (-12.47%)
Stddev 2 828.04 ( 0.00%) 151.51 ( 81.70%) 641.04 ( 22.58%) 504.12 ( 39.12%)
Stddev 3 824.92 ( 0.00%) 3708.80 (-349.60%) 1092.76 (-32.47%) 2024.69 (-145.44%)
Stddev 4 607.86 ( 0.00%) 1768.43 (-190.93%) 1422.30 (-133.99%) 1298.14 (-113.56%)
Stddev 5 836.75 ( 0.00%) 1048.83 (-25.34%) 1656.67 (-97.99%) 2600.99 (-210.84%)
Stddev 6 641.16 ( 0.00%) 1010.82 (-57.66%) 990.71 (-54.52%) 1832.47 (-185.81%)
Stddev 7 4556.68 ( 0.00%) 2374.23 ( 47.90%) 1395.66 ( 69.37%) 3149.28 ( 30.89%)
Stddev 8 3770.88 ( 0.00%) 5926.66 (-57.17%) 1017.86 ( 73.01%) 3213.00 ( 14.79%)
Stddev 9 2396.64 ( 0.00%) 2946.42 (-22.94%) 1131.78 ( 52.78%) 5125.85 (-113.88%)
Stddev 10 2535.66 ( 0.00%) 2827.47 (-11.51%) 2330.35 ( 8.10%) 2662.72 ( -5.01%)
Stddev 11 2858.16 ( 0.00%) 4522.90 (-58.25%) 5970.58 (-108.90%) 3843.01 (-34.46%)
Stddev 12 4084.30 ( 0.00%) 2782.83 ( 31.87%) 9008.52 (-120.56%) 1062.12 ( 74.00%)
Stddev 13 3079.56 ( 0.00%) 1107.30 ( 64.04%) 9118.81 (-196.11%) 3075.82 ( 0.12%)
Stddev 14 2886.35 ( 0.00%) 1497.39 ( 48.12%) 9084.67 (-214.75%) 3209.97 (-11.21%)
Stddev 15 3302.30 ( 0.00%) 1942.68 ( 41.17%) 10684.80 (-223.56%) 1094.48 ( 66.86%)
Stddev 16 3868.79 ( 0.00%) 2024.71 ( 47.67%) 10202.01 (-163.70%) 1389.86 ( 64.08%)
Stddev 17 3318.20 ( 0.00%) 1031.66 ( 68.91%) 10295.90 (-210.29%) 1334.94 ( 59.77%)
Stddev 18 3926.91 ( 0.00%) 976.39 ( 75.14%) 11497.98 (-192.80%) 914.90 ( 76.70%)
Stddev 19 3169.02 ( 0.00%) 668.74 ( 78.90%) 10951.67 (-245.59%) 2192.84 ( 30.80%)
Stddev 20 3343.84 ( 0.00%) 727.51 ( 78.24%) 10974.75 (-228.21%) 991.99 ( 70.33%)
Stddev 21 3253.04 ( 0.00%) 1212.03 ( 62.74%) 11682.29 (-259.12%) 802.70 ( 75.32%)
Stddev 22 3320.18 ( 0.00%) 1017.95 ( 69.34%) 11224.85 (-238.08%) 536.20 ( 83.85%)
Stddev 23 3160.77 ( 0.00%) 1544.09 ( 51.15%) 11611.88 (-267.37%) 1076.64 ( 65.94%)
Stddev 24 3079.01 ( 0.00%) 739.34 ( 75.99%) 13124.55 (-326.26%) 1311.96 ( 57.39%)
TPut 1 101843.00 ( 0.00%) 76165.00 (-25.21%) 102154.00 ( 0.31%) 103557.00 ( 1.68%)
TPut 2 214083.00 ( 0.00%) 145141.00 (-32.20%) 224180.00 ( 4.72%) 209696.00 ( -2.05%)
TPut 3 310220.00 ( 0.00%) 212885.00 (-31.38%) 332589.00 ( 7.21%) 307595.00 ( -0.85%)
TPut 4 400120.00 ( 0.00%) 260936.00 (-34.79%) 435861.00 ( 8.93%) 392443.00 ( -1.92%)
TPut 5 481237.00 ( 0.00%) 305261.00 (-36.57%) 528704.00 ( 9.86%) 478223.00 ( -0.63%)
TPut 6 544450.00 ( 0.00%) 356692.00 (-34.49%) 602131.00 ( 10.59%) 547972.00 ( 0.65%)
TPut 7 541435.00 ( 0.00%) 372104.00 (-31.27%) 636740.00 ( 17.60%) 555417.00 ( 2.58%)
TPut 8 537278.00 ( 0.00%) 390818.00 (-27.26%) 648489.00 ( 20.70%) 555817.00 ( 3.45%)
TPut 9 528759.00 ( 0.00%) 389223.00 (-26.39%) 645909.00 ( 22.16%) 543027.00 ( 2.70%)
TPut 10 512093.00 ( 0.00%) 347658.00 (-32.11%) 636057.00 ( 24.21%) 521259.00 ( 1.79%)
TPut 11 476907.00 ( 0.00%) 382509.00 (-19.79%) 620966.00 ( 30.21%) 495404.00 ( 3.88%)
TPut 12 447078.00 ( 0.00%) 355316.00 (-20.52%) 600011.00 ( 34.21%) 462629.00 ( 3.48%)
TPut 13 443633.00 ( 0.00%) 420612.00 ( -5.19%) 587079.00 ( 32.33%) 455664.00 ( 2.71%)
TPut 14 436253.00 ( 0.00%) 415622.00 ( -4.73%) 577402.00 ( 32.35%) 466123.00 ( 6.85%)
TPut 15 421602.00 ( 0.00%) 409097.00 ( -2.97%) 567966.00 ( 34.72%) 467714.00 ( 10.94%)
TPut 16 424782.00 ( 0.00%) 400588.00 ( -5.70%) 565745.00 ( 33.18%) 457717.00 ( 7.75%)
TPut 17 408308.00 ( 0.00%) 393778.00 ( -3.56%) 558941.00 ( 36.89%) 454548.00 ( 11.32%)
TPut 18 404628.00 ( 0.00%) 387853.00 ( -4.15%) 551470.00 ( 36.29%) 454915.00 ( 12.43%)
TPut 19 399571.00 ( 0.00%) 383524.00 ( -4.02%) 541861.00 ( 35.61%) 449470.00 ( 12.49%)
TPut 20 400050.00 ( 0.00%) 375406.00 ( -6.16%) 539361.00 ( 34.82%) 450849.00 ( 12.70%)
TPut 21 388629.00 ( 0.00%) 371153.00 ( -4.50%) 533817.00 ( 37.36%) 429966.00 ( 10.64%)
TPut 22 391229.00 ( 0.00%) 363325.00 ( -7.13%) 523244.00 ( 33.74%) 433136.00 ( 10.71%)
TPut 23 377148.00 ( 0.00%) 353618.00 ( -6.24%) 518772.00 ( 37.55%) 424097.00 ( 12.45%)
TPut 24 376568.00 ( 0.00%) 346196.00 ( -8.07%) 509669.00 ( 35.35%) 413932.00 ( 9.92%)
numacore regresses without THP on multiple JVM configurations, particularly
for lower number of warehouses. Note that once again it improves as the
number of warehouses increase. SpecJBB reports based on peaks so this will
be missed if only the peak figures are quoted in other benchmark reports.
autonuma again performs very well although it's variances between JVMs
is nuts.
Without THP, balancenuma shows small regressions for small numbers of
warehouses but recovers to show decent performance gains. Note that the
gains vary between warehouses because it's completely at the mercy of the
default scheduler decisions which are getting no hints about NUMA placement.
SPECJBB PEAKS
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
Expctd Warehouse 12.00 ( 0.00%) 12.00 ( 0.00%) 12.00 ( 0.00%) 12.00 ( 0.00%)
Expctd Peak Bops 447078.00 ( 0.00%) 355316.00 (-20.52%) 600011.00 ( 34.21%) 462629.00 ( 3.48%)
Actual Warehouse 6.00 ( 0.00%) 13.00 (116.67%) 8.00 ( 33.33%) 8.00 ( 33.33%)
Actual Peak Bops 544450.00 ( 0.00%) 420612.00 (-22.75%) 648489.00 ( 19.11%) 555817.00 ( 2.09%)
SpecJBB Bops 409191.00 ( 0.00%) 382775.00 ( -6.46%) 551949.00 ( 34.89%) 447750.00 ( 9.42%)
SpecJBB Bops/JVM 102298.00 ( 0.00%) 95694.00 ( -6.46%) 137987.00 ( 34.89%) 111938.00 ( 9.42%)
numacore regresses from the peak by 22.75% and the specjbb overall score is down 6.46%.
autonuma does well with a 19.11% gain on the peak and 34.89% overall.
balancenuma does reasonably well -- 2.09% gain at the peak and 9.42%
gain overall.
MMTests Statistics: duration
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
User 177276.00 146602.11 176834.75 175649.50
System 91.09 27863.11 283.25 1455.39
Elapsed 4030.76 4042.32 4038.79 4038.06
numacores system CPU usage is extremely high.
autonumas is ok (kernel threads blah blah)
balancenumas is higher than I'd like. I want to describe is as "not crazy"
but it probably is to everybody else.
MMTests Statistics: vmstat
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
Page Ins 37836 37744 38072 37192
Page Outs 49440 51944 49024 51384
Swap Ins 0 0 0 0
Swap Outs 0 0 0 0
Direct pages scanned 0 0 0 0
Kswapd pages scanned 0 0 0 0
Kswapd pages reclaimed 0 0 0 0
Direct pages reclaimed 0 0 0 0
Kswapd efficiency 100% 100% 100% 100%
Kswapd velocity 0.000 0.000 0.000 0.000
Direct efficiency 100% 100% 100% 100%
Direct velocity 0.000 0.000 0.000 0.000
Percentage direct scans 0% 0% 0% 0%
Page writes by reclaim 0 0 0 0
Page writes file 0 0 0 0
Page writes anon 0 0 0 0
Page reclaim immediate 0 0 0 0
Page rescued immediate 0 0 0 0
Slabs scanned 0 0 0 0
Direct inode steals 0 0 0 0
Kswapd inode steals 0 0 0 0
Kswapd skipped wait 0 0 0 0
THP fault alloc 2 1 1 3
THP collapse alloc 2 0 20 0
THP splits 0 0 0 0
THP fault fallback 0 0 0 0
THP collapse fail 0 0 0 0
Compaction stalls 0 0 0 0
Compaction success 0 0 0 0
Compaction failures 0 0 0 0
Page migrate success 0 0 0 37212252
Page migrate failure 0 0 0 0
Compaction pages isolated 0 0 0 0
Compaction migrate scanned 0 0 0 0
Compaction free scanned 0 0 0 0
Compaction cost 0 0 0 38626
NUMA PTE updates 0 0 0 290219318
NUMA hint faults 0 0 0 267929465
NUMA hint local faults 0 0 0 69757534
NUMA pages migrated 0 0 0 37212252
AutoNUMA cost 0 0 0 1342385
First take-away is the lack of THP activity.
Here the stats balancenuma reports are useful because we're only dealing
with base pages. balancenuma migrates 36MB/second which is really high,
particularly when you bear in mind that with copying that's 72MB/sec of
data transferred. From earlier test results we know the scan rate adaption
helps keep this figure down and that average migration rates is something
we should keep an eye on.
>From here, we're onto the single JVM configuration. I suspect
this is tested much more commonly but note that it behaves very
differently to the multi JVM configuration as explained by Andrea
(http://choon.net/forum/read.php?21,1599976,page=4).
SPECJBB: Single JVM, THP is enabled
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
TPut 1 25219.00 ( 0.00%) 24994.00 ( -0.89%) 23003.00 ( -8.79%) 26876.00 ( 6.57%)
TPut 2 56218.00 ( 0.00%) 52603.00 ( -6.43%) 52412.00 ( -6.77%) 55372.00 ( -1.50%)
TPut 3 87560.00 ( 0.00%) 78545.00 (-10.30%) 82769.00 ( -5.47%) 87351.00 ( -0.24%)
TPut 4 114877.00 ( 0.00%) 110117.00 ( -4.14%) 109057.00 ( -5.07%) 116584.00 ( 1.49%)
TPut 5 145249.00 ( 0.00%) 126704.00 (-12.77%) 136402.00 ( -6.09%) 144194.00 ( -0.73%)
TPut 6 169591.00 ( 0.00%) 147129.00 (-13.24%) 153711.00 ( -9.36%) 170627.00 ( 0.61%)
TPut 7 194429.00 ( 0.00%) 171652.00 (-11.71%) 185094.00 ( -4.80%) 197385.00 ( 1.52%)
TPut 8 218492.00 ( 0.00%) 167754.00 (-23.22%) 212731.00 ( -2.64%) 225145.00 ( 3.04%)
TPut 9 242090.00 ( 0.00%) 200709.00 (-17.09%) 233781.00 ( -3.43%) 250624.00 ( 3.53%)
TPut 10 254513.00 ( 0.00%) 236769.00 ( -6.97%) 256599.00 ( 0.82%) 275834.00 ( 8.38%)
TPut 11 283694.00 ( 0.00%) 227999.00 (-19.63%) 281189.00 ( -0.88%) 300696.00 ( 5.99%)
TPut 12 306679.00 ( 0.00%) 263599.00 (-14.05%) 307239.00 ( 0.18%) 325723.00 ( 6.21%)
TPut 13 317050.00 ( 0.00%) 281988.00 (-11.06%) 320474.00 ( 1.08%) 346733.00 ( 9.36%)
TPut 14 281122.00 ( 0.00%) 306206.00 ( 8.92%) 348007.00 ( 23.79%) 363974.00 ( 29.47%)
TPut 15 344584.00 ( 0.00%) 327784.00 ( -4.88%) 370530.00 ( 7.53%) 390804.00 ( 13.41%)
TPut 16 355251.00 ( 0.00%) 325626.00 ( -8.34%) 388602.00 ( 9.39%) 412690.00 ( 16.17%)
TPut 17 358785.00 ( 0.00%) 372911.00 ( 3.94%) 406725.00 ( 13.36%) 431710.00 ( 20.33%)
TPut 18 362037.00 ( 0.00%) 358876.00 ( -0.87%) 423311.00 ( 16.92%) 447506.00 ( 23.61%)
TPut 19 366526.00 ( 0.00%) 397926.00 ( 8.57%) 434692.00 ( 18.60%) 454669.00 ( 24.05%)
TPut 20 365125.00 ( 0.00%) 387871.00 ( 6.23%) 441119.00 ( 20.81%) 475213.00 ( 30.15%)
TPut 21 367221.00 ( 0.00%) 446595.00 ( 21.61%) 473582.00 ( 28.96%) 483085.00 ( 31.55%)
TPut 22 352732.00 ( 0.00%) 436862.00 ( 23.85%) 479616.00 ( 35.97%) 494976.00 ( 40.33%)
TPut 23 358840.00 ( 0.00%) 464554.00 ( 29.46%) 484157.00 ( 34.92%) 507236.00 ( 41.35%)
TPut 24 355426.00 ( 0.00%) 474432.00 ( 33.48%) 477851.00 ( 34.44%) 503864.00 ( 41.76%)
TPut 25 354178.00 ( 0.00%) 456845.00 ( 28.99%) 476411.00 ( 34.51%) 505628.00 ( 42.76%)
TPut 26 352844.00 ( 0.00%) 477178.00 ( 35.24%) 474925.00 ( 34.60%) 496278.00 ( 40.65%)
TPut 27 351616.00 ( 0.00%) 461061.00 ( 31.13%) 461218.00 ( 31.17%) 507777.00 ( 44.41%)
TPut 28 342442.00 ( 0.00%) 458497.00 ( 33.89%) 442311.00 ( 29.16%) 495797.00 ( 44.78%)
TPut 29 330633.00 ( 0.00%) 492795.00 ( 49.05%) 444804.00 ( 34.53%) 512545.00 ( 55.02%)
TPut 30 330202.00 ( 0.00%) 503148.00 ( 52.38%) 428283.00 ( 29.70%) 494677.00 ( 49.81%)
TPut 31 318975.00 ( 0.00%) 488421.00 ( 53.12%) 445121.00 ( 39.55%) 498506.00 ( 56.28%)
TPut 32 321422.00 ( 0.00%) 469743.00 ( 46.15%) 437403.00 ( 36.08%) 490464.00 ( 52.59%)
TPut 33 322341.00 ( 0.00%) 465564.00 ( 44.43%) 422936.00 ( 31.21%) 485365.00 ( 50.58%)
TPut 34 306767.00 ( 0.00%) 462386.00 ( 50.73%) 407367.00 ( 32.79%) 467848.00 ( 52.51%)
TPut 35 304995.00 ( 0.00%) 476963.00 ( 56.38%) 407555.00 ( 33.63%) 471954.00 ( 54.74%)
TPut 36 296795.00 ( 0.00%) 455814.00 ( 53.58%) 403723.00 ( 36.03%) 467543.00 ( 57.53%)
TPut 37 295131.00 ( 0.00%) 414467.00 ( 40.43%) 367104.00 ( 24.39%) 453145.00 ( 53.54%)
TPut 38 285609.00 ( 0.00%) 418189.00 ( 46.42%) 357852.00 ( 25.29%) 436387.00 ( 52.79%)
TPut 39 288418.00 ( 0.00%) 432818.00 ( 50.07%) 345127.00 ( 19.66%) 424866.00 ( 47.31%)
TPut 40 284779.00 ( 0.00%) 416627.00 ( 46.30%) 330080.00 ( 15.91%) 429043.00 ( 50.66%)
TPut 41 275224.00 ( 0.00%) 406106.00 ( 47.55%) 332766.00 ( 20.91%) 412042.00 ( 49.71%)
TPut 42 272301.00 ( 0.00%) 387449.00 ( 42.29%) 330321.00 ( 21.31%) 409263.00 ( 50.30%)
TPut 43 261075.00 ( 0.00%) 369755.00 ( 41.63%) 322081.00 ( 23.37%) 416906.00 ( 59.69%)
TPut 44 259570.00 ( 0.00%) 383102.00 ( 47.59%) 310141.00 ( 19.48%) 401482.00 ( 54.67%)
TPut 45 268308.00 ( 0.00%) 370866.00 ( 38.22%) 309946.00 ( 15.52%) 397084.00 ( 48.00%)
TPut 46 251641.00 ( 0.00%) 371264.00 ( 47.54%) 308248.00 ( 22.50%) 367053.00 ( 45.86%)
TPut 47 248566.00 ( 0.00%) 381703.00 ( 53.56%) 296089.00 ( 19.12%) 362150.00 ( 45.70%)
TPut 48 256403.00 ( 0.00%) 392542.00 ( 53.10%) 302787.00 ( 18.09%) 368646.00 ( 43.78%)
TPut 49 252248.00 ( 0.00%) 377276.00 ( 49.57%) 330756.00 ( 31.12%) 385558.00 ( 52.85%)
TPut 50 247856.00 ( 0.00%) 351684.00 ( 41.89%) 344068.00 ( 38.82%) 373454.00 ( 50.67%)
TPut 51 251900.00 ( 0.00%) 332813.00 ( 32.12%) 332706.00 ( 32.08%) 385786.00 ( 53.15%)
TPut 52 255247.00 ( 0.00%) 373908.00 ( 46.49%) 338580.00 ( 32.65%) 357138.00 ( 39.92%)
TPut 53 254376.00 ( 0.00%) 354872.00 ( 39.51%) 366606.00 ( 44.12%) 367391.00 ( 44.43%)
TPut 54 239804.00 ( 0.00%) 375675.00 ( 56.66%) 347626.00 ( 44.96%) 387538.00 ( 61.61%)
TPut 55 243339.00 ( 0.00%) 411901.00 ( 69.27%) 345700.00 ( 42.07%) 379513.00 ( 55.96%)
TPut 56 253604.00 ( 0.00%) 379291.00 ( 49.56%) 366087.00 ( 44.35%) 367165.00 ( 44.78%)
TPut 57 238212.00 ( 0.00%) 376023.00 ( 57.85%) 347698.00 ( 45.96%) 346641.00 ( 45.52%)
TPut 58 246397.00 ( 0.00%) 399372.00 ( 62.08%) 372138.00 ( 51.03%) 377817.00 ( 53.34%)
TPut 59 244926.00 ( 0.00%) 389607.00 ( 59.07%) 367619.00 ( 50.09%) 373928.00 ( 52.67%)
TPut 60 247249.00 ( 0.00%) 382694.00 ( 54.78%) 339032.00 ( 37.12%) 377435.00 ( 52.65%)
TPut 61 249833.00 ( 0.00%) 383316.00 ( 53.43%) 340934.00 ( 36.46%) 345885.00 ( 38.45%)
TPut 62 247309.00 ( 0.00%) 390815.00 ( 58.03%) 345727.00 ( 39.80%) 359426.00 ( 45.33%)
TPut 63 246530.00 ( 0.00%) 390800.00 ( 58.52%) 369327.00 ( 49.81%) 351243.00 ( 42.47%)
TPut 64 238954.00 ( 0.00%) 404036.00 ( 69.09%) 359388.00 ( 50.40%) 354036.00 ( 48.16%)
TPut 65 245095.00 ( 0.00%) 398807.00 ( 62.72%) 341462.00 ( 39.32%) 336288.00 ( 37.21%)
TPut 66 250698.00 ( 0.00%) 387445.00 ( 54.55%) 352065.00 ( 40.43%) 374670.00 ( 49.45%)
TPut 67 235819.00 ( 0.00%) 385050.00 ( 63.28%) 337617.00 ( 43.17%) 365777.00 ( 55.11%)
TPut 68 233949.00 ( 0.00%) 372286.00 ( 59.13%) 365514.00 ( 56.24%) 344230.00 ( 47.14%)
TPut 69 229172.00 ( 0.00%) 370092.00 ( 61.49%) 370106.00 ( 61.50%) 364038.00 ( 58.85%)
TPut 70 237174.00 ( 0.00%) 375051.00 ( 58.13%) 366155.00 ( 54.38%) 351673.00 ( 48.28%)
TPut 71 235153.00 ( 0.00%) 375629.00 ( 59.74%) 365557.00 ( 55.45%) 328308.00 ( 39.61%)
TPut 72 235747.00 ( 0.00%) 356140.00 ( 51.07%) 378508.00 ( 60.56%) 334254.00 ( 41.79%)
numacore does not perform well here for low numbers of warehouses but rapidly
improves and by warehouse 18 is more or less level with the mainline kernel. After
that it improves quite dramatically. Note that specjbb reports on peak scores so
with THP enabled and a single JVM, numacore scores extremely well.
autonuma also regressed for lower number of warehouses in this run although
it is not clear why. In 3.7-rc6, the same patch ashowed very small gains
flor lower number of warehouses. As with numacore it improves for larger
number of warehouses and starts improveing from warehouse 12 as opposed
to 18 for numacore.
balancenuma regressed a little initially but improves sooner and shows
respectable performance gains similar to numacore and autonuma for larger
numbers of warehouses.
SPECJBB PEAKS
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
Expctd Warehouse 48.00 ( 0.00%) 48.00 ( 0.00%) 48.00 ( 0.00%) 48.00 ( 0.00%)
Expctd Peak Bops 256403.00 ( 0.00%) 392542.00 ( 53.10%) 302787.00 ( 18.09%) 368646.00 ( 43.78%)
Actual Warehouse 21.00 ( 0.00%) 30.00 ( 42.86%) 23.00 ( 9.52%) 29.00 ( 38.10%)
Actual Peak Bops 367221.00 ( 0.00%) 503148.00 ( 37.02%) 484157.00 ( 31.84%) 512545.00 ( 39.57%)
SpecJBB Bops 124837.00 ( 0.00%) 193615.00 ( 55.09%) 179465.00 ( 43.76%) 184854.00 ( 48.08%)
SpecJBB Bops/JVM 124837.00 ( 0.00%) 193615.00 ( 55.09%) 179465.00 ( 43.76%) 184854.00 ( 48.08%)
Here you can see that numacore scales to a higher number of warehouses
and sees a 37.02% performance gain at the peak and a 55.09% gain on the
specjbb score. The peaks are great but not the results for smaller number
of warehouses. As specjbb scores based on the peak, be mindful of this.
autonuma sees a 31.84% performance gain at the peak and a 43.76%
performance gain on the specjbb score.
balancenuma gets a 39.57% performance gain at the peak and a 48.08%
gain on the specjbb score.
For larger numbers of warehouses, all three trees do extremely well.
MMTests Statistics: duration
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
User 317746.38 311465.45 316147.49 315667.42
System 99.42 3043.75 355.53 459.73
Elapsed 7433.93 7436.53 7435.53 7433.49
Same comments about the system CPU usage. numacores is extremely high and
us using 6 times more CPU than balancenuma is.
MMTests Statistics: vmstat
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
Page Ins 37060 36916 37072 33400
Page Outs 59220 63380 57804 54436
Swap Ins 0 0 0 0
Swap Outs 0 0 0 0
Direct pages scanned 0 0 0 0
Kswapd pages scanned 0 0 0 0
Kswapd pages reclaimed 0 0 0 0
Direct pages reclaimed 0 0 0 0
Kswapd efficiency 100% 100% 100% 100%
Kswapd velocity 0.000 0.000 0.000 0.000
Direct efficiency 100% 100% 100% 100%
Direct velocity 0.000 0.000 0.000 0.000
Percentage direct scans 0% 0% 0% 0%
Page writes by reclaim 0 0 0 0
Page writes file 0 0 0 0
Page writes anon 0 0 0 0
Page reclaim immediate 0 0 0 0
Page rescued immediate 0 0 0 0
Slabs scanned 0 0 0 0
Direct inode steals 0 0 0 0
Kswapd inode steals 0 0 0 0
Kswapd skipped wait 0 0 0 0
THP fault alloc 53004 43971 51386 50126
THP collapse alloc 67 1 192 58
THP splits 82 39 107 77
THP fault fallback 0 0 0 0
THP collapse fail 0 0 0 0
Compaction stalls 0 0 0 0
Compaction success 0 0 0 0
Compaction failures 0 0 0 0
Page migrate success 0 0 0 47488580
Page migrate failure 0 0 0 0
Compaction pages isolated 0 0 0 0
Compaction migrate scanned 0 0 0 0
Compaction free scanned 0 0 0 0
Compaction cost 0 0 0 49293
NUMA PTE updates 0 0 0 359807386
NUMA hint faults 0 0 0 2024295
NUMA hint local faults 0 0 0 693439
NUMA pages migrated 0 0 0 47488580
AutoNUMA cost 0 0 0 13542
THP is in use. balancenuma migrated more than I'd like at an average
of 24M/sec.
SPECJBB: Single JVM, THP is disabled
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
TPut 1 19264.00 ( 0.00%) 17423.00 ( -9.56%) 18895.00 ( -1.92%) 19925.00 ( 3.43%)
TPut 2 45341.00 ( 0.00%) 38727.00 (-14.59%) 46448.00 ( 2.44%) 47567.00 ( 4.91%)
TPut 3 69495.00 ( 0.00%) 58775.00 (-15.43%) 69639.00 ( 0.21%) 72462.00 ( 4.27%)
TPut 4 93336.00 ( 0.00%) 71864.00 (-23.01%) 95667.00 ( 2.50%) 97095.00 ( 4.03%)
TPut 5 113997.00 ( 0.00%) 98727.00 (-13.40%) 123262.00 ( 8.13%) 121667.00 ( 6.73%)
TPut 6 135278.00 ( 0.00%) 111789.00 (-17.36%) 143619.00 ( 6.17%) 144664.00 ( 6.94%)
TPut 7 158037.00 ( 0.00%) 119202.00 (-24.57%) 168299.00 ( 6.49%) 169072.00 ( 6.98%)
TPut 8 180282.00 ( 0.00%) 124026.00 (-31.20%) 189608.00 ( 5.17%) 186262.00 ( 3.32%)
TPut 9 203033.00 ( 0.00%) 128233.00 (-36.84%) 211492.00 ( 4.17%) 207573.00 ( 2.24%)
TPut 10 221732.00 ( 0.00%) 139290.00 (-37.18%) 230843.00 ( 4.11%) 232814.00 ( 5.00%)
TPut 11 242479.00 ( 0.00%) 127751.00 (-47.31%) 255217.00 ( 5.25%) 255212.00 ( 5.25%)
TPut 12 257236.00 ( 0.00%) 149851.00 (-41.75%) 272681.00 ( 6.00%) 259541.00 ( 0.90%)
TPut 13 281727.00 ( 0.00%) 163583.00 (-41.94%) 287647.00 ( 2.10%) 299305.00 ( 6.24%)
TPut 14 303538.00 ( 0.00%) 142471.00 (-53.06%) 312506.00 ( 2.95%) 316094.00 ( 4.14%)
TPut 15 322025.00 ( 0.00%) 127744.00 (-60.33%) 312595.00 ( -2.93%) 279241.00 (-13.29%)
TPut 16 336713.00 ( 0.00%) 123808.00 (-63.23%) 335452.00 ( -0.37%) 307668.00 ( -8.63%)
TPut 17 356063.00 ( 0.00%) 111864.00 (-68.58%) 225754.00 (-36.60%) 355818.00 ( -0.07%)
TPut 18 371661.00 ( 0.00%) 147370.00 (-60.35%) 360233.00 ( -3.07%) 372634.00 ( 0.26%)
TPut 19 379312.00 ( 0.00%) 123923.00 (-67.33%) 387282.00 ( 2.10%) 361767.00 ( -4.63%)
TPut 20 401692.00 ( 0.00%) 138242.00 (-65.59%) 404094.00 ( 0.60%) 423420.00 ( 5.41%)
TPut 21 414513.00 ( 0.00%) 130297.00 (-68.57%) 407778.00 ( -1.62%) 391592.00 ( -5.53%)
TPut 22 428844.00 ( 0.00%) 137265.00 (-67.99%) 417451.00 ( -2.66%) 405080.00 ( -5.54%)
TPut 23 438020.00 ( 0.00%) 142830.00 (-67.39%) 429879.00 ( -1.86%) 408552.00 ( -6.73%)
TPut 24 448953.00 ( 0.00%) 134555.00 (-70.03%) 438014.00 ( -2.44%) 437712.00 ( -2.50%)
TPut 25 435304.00 ( 0.00%) 139353.00 (-67.99%) 421593.00 ( -3.15%) 434468.00 ( -0.19%)
TPut 26 440650.00 ( 0.00%) 138950.00 (-68.47%) 431110.00 ( -2.16%) 470865.00 ( 6.86%)
TPut 27 450883.00 ( 0.00%) 122023.00 (-72.94%) 363860.00 (-19.30%) 454628.00 ( 0.83%)
TPut 28 443898.00 ( 0.00%) 147767.00 (-66.71%) 432948.00 ( -2.47%) 435056.00 ( -1.99%)
TPut 29 441452.00 ( 0.00%) 146533.00 (-66.81%) 424264.00 ( -3.89%) 428605.00 ( -2.91%)
TPut 30 441326.00 ( 0.00%) 151533.00 (-65.66%) 422050.00 ( -4.37%) 460991.00 ( 4.46%)
TPut 31 439690.00 ( 0.00%) 153500.00 (-65.09%) 414679.00 ( -5.69%) 434294.00 ( -1.23%)
TPut 32 429590.00 ( 0.00%) 157455.00 (-63.35%) 419414.00 ( -2.37%) 428349.00 ( -0.29%)
TPut 33 417133.00 ( 0.00%) 144792.00 (-65.29%) 416503.00 ( -0.15%) 417916.00 ( 0.19%)
TPut 34 420403.00 ( 0.00%) 145986.00 (-65.27%) 405824.00 ( -3.47%) 433001.00 ( 3.00%)
TPut 35 416891.00 ( 0.00%) 147549.00 (-64.61%) 403946.00 ( -3.11%) 442290.00 ( 6.09%)
TPut 36 408666.00 ( 0.00%) 148456.00 (-63.67%) 407079.00 ( -0.39%) 394163.00 ( -3.55%)
TPut 37 404101.00 ( 0.00%) 155440.00 (-61.53%) 388615.00 ( -3.83%) 402274.00 ( -0.45%)
TPut 38 388909.00 ( 0.00%) 160695.00 (-58.68%) 394499.00 ( 1.44%) 427483.00 ( 9.92%)
TPut 39 383162.00 ( 0.00%) 152452.00 (-60.21%) 375101.00 ( -2.10%) 390608.00 ( 1.94%)
TPut 40 370984.00 ( 0.00%) 165686.00 (-55.34%) 374385.00 ( 0.92%) 377252.00 ( 1.69%)
TPut 41 370755.00 ( 0.00%) 164312.00 (-55.68%) 370951.00 ( 0.05%) 375261.00 ( 1.22%)
TPut 42 356921.00 ( 0.00%) 168220.00 (-52.87%) 365286.00 ( 2.34%) 361267.00 ( 1.22%)
TPut 43 346752.00 ( 0.00%) 164975.00 (-52.42%) 348567.00 ( 0.52%) 402065.00 ( 15.95%)
TPut 44 333574.00 ( 0.00%) 155288.00 (-53.45%) 346565.00 ( 3.89%) 359868.00 ( 7.88%)
TPut 45 330858.00 ( 0.00%) 158725.00 (-52.03%) 359029.00 ( 8.51%) 355606.00 ( 7.48%)
TPut 46 324668.00 ( 0.00%) 163932.00 (-49.51%) 351591.00 ( 8.29%) 375223.00 ( 15.57%)
TPut 47 317691.00 ( 0.00%) 154329.00 (-51.42%) 353301.00 ( 11.21%) 355017.00 ( 11.75%)
TPut 48 323505.00 ( 0.00%) 159024.00 (-50.84%) 344156.00 ( 6.38%) 372821.00 ( 15.24%)
TPut 49 323870.00 ( 0.00%) 142198.00 (-56.09%) 349592.00 ( 7.94%) 370188.00 ( 14.30%)
TPut 50 332865.00 ( 0.00%) 133112.00 (-60.01%) 355565.00 ( 6.82%) 366131.00 ( 9.99%)
TPut 51 325322.00 ( 0.00%) 139628.00 (-57.08%) 355764.00 ( 9.36%) 354747.00 ( 9.04%)
TPut 52 326365.00 ( 0.00%) 144885.00 (-55.61%) 364997.00 ( 11.84%) 358001.00 ( 9.69%)
TPut 53 312548.00 ( 0.00%) 167534.00 (-46.40%) 370090.00 ( 18.41%) 360848.00 ( 15.45%)
TPut 54 324755.00 ( 0.00%) 170174.00 (-47.60%) 373291.00 ( 14.95%) 362261.00 ( 11.55%)
TPut 55 317938.00 ( 0.00%) 177956.00 (-44.03%) 375091.00 ( 17.98%) 344495.00 ( 8.35%)
TPut 56 326050.00 ( 0.00%) 178906.00 (-45.13%) 375465.00 ( 15.16%) 369663.00 ( 13.38%)
TPut 57 302538.00 ( 0.00%) 176488.00 (-41.66%) 372899.00 ( 23.26%) 366090.00 ( 21.01%)
TPut 58 314612.00 ( 0.00%) 175755.00 (-44.14%) 385492.00 ( 22.53%) 354818.00 ( 12.78%)
TPut 59 312258.00 ( 0.00%) 170366.00 (-45.44%) 383785.00 ( 22.91%) 373003.00 ( 19.45%)
TPut 60 317391.00 ( 0.00%) 171247.00 (-46.05%) 379551.00 ( 19.58%) 365024.00 ( 15.01%)
TPut 61 289702.00 ( 0.00%) 171227.00 (-40.90%) 373473.00 ( 28.92%) 368090.00 ( 27.06%)
TPut 62 314272.00 ( 0.00%) 170611.00 (-45.71%) 369686.00 ( 17.63%) 367854.00 ( 17.05%)
TPut 63 318831.00 ( 0.00%) 170379.00 (-46.56%) 367372.00 ( 15.22%) 372475.00 ( 16.83%)
TPut 64 304071.00 ( 0.00%) 167930.00 (-44.77%) 368247.00 ( 21.11%) 370133.00 ( 21.73%)
TPut 65 294689.00 ( 0.00%) 170535.00 (-42.13%) 361717.00 ( 22.75%) 363054.00 ( 23.20%)
TPut 66 309932.00 ( 0.00%) 168917.00 (-45.50%) 356749.00 ( 15.11%) 351800.00 ( 13.51%)
TPut 67 309109.00 ( 0.00%) 168709.00 (-45.42%) 366841.00 ( 18.68%) 366473.00 ( 18.56%)
TPut 68 307969.00 ( 0.00%) 167717.00 (-45.54%) 345216.00 ( 12.09%) 372904.00 ( 21.08%)
TPut 69 315208.00 ( 0.00%) 165794.00 (-47.40%) 367136.00 ( 16.47%) 354816.00 ( 12.57%)
TPut 70 310438.00 ( 0.00%) 166529.00 (-46.36%) 364421.00 ( 17.39%) 362567.00 ( 16.79%)
TPut 71 304885.00 ( 0.00%) 165862.00 (-45.60%) 357377.00 ( 17.22%) 355774.00 ( 16.69%)
TPut 72 304734.00 ( 0.00%) 165487.00 (-45.69%) 331900.00 ( 8.91%) 348366.00 ( 14.32%)
Without THP, numacore suffers really badly. In an earlier run against
3.7-rc6, autonuma and balancenuma also did not do great but autonuma did
quite well this time with the same patch so something significant may have
changed between 3.7-rc6 and 3.7-rc7. balancenuma also did reasonably well
this time when it showed flat performance the last time. It has changed,
but mostly in how it treats THP which should not have affected this result.
Tip was based on 3.7-rc6 this time but maybe it'll benefit from the same
mystery change in 3.7-rc7 when it's tested.
So, while balancenuma did well here it's worth noting that if it continually
migrates then its scan rate does not drop and it incurs a higher system
CPU cost. It did not happen here but is worth bearing in mind.
SPECJBB PEAKS
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
Expctd Warehouse 48.00 ( 0.00%) 48.00 ( 0.00%) 48.00 ( 0.00%) 48.00 ( 0.00%)
Expctd Peak Bops 323505.00 ( 0.00%) 159024.00 (-50.84%) 344156.00 ( 6.38%) 372821.00 ( 15.24%)
Actual Warehouse 27.00 ( 0.00%) 56.00 (107.41%) 24.00 (-11.11%) 26.00 ( -3.70%)
Actual Peak Bops 450883.00 ( 0.00%) 178906.00 (-60.32%) 438014.00 ( -2.85%) 470865.00 ( 4.43%)
SpecJBB Bops 160079.00 ( 0.00%) 84224.00 (-47.39%) 186038.00 ( 16.22%) 185151.00 ( 15.66%)
SpecJBB Bops/JVM 160079.00 ( 0.00%) 84224.00 (-47.39%) 186038.00 ( 16.22%) 185151.00 ( 15.66%)
numacore regressed 60.32% at the peak and has a 47.39% loss on its specjbb
score.
autonuma regresses 2.85% at its peak but gained 16.22% on its overall
specjbb score.
balancenuma does gained 4.43 at its peak and a 15.66% on its overall score.
MMTests Statistics: duration
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
User 317176.63 168175.82 308607.83 308503.96
System 60.85 119763.49 3974.78 1879.45
Elapsed 7434.09 7451.39 7437.49 7437.41
numacores system CPU usage is excessive.
autonumas is high here as well and that's even with the kernel threads.
balancenumas is also higher than I'd like but it's the best of the three
trees.
MMTests Statistics: vmstat
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
Page Ins 62572 36844 37132 37100
Page Outs 60448 62928 58464 59028
Swap Ins 0 0 0 0
Swap Outs 0 0 0 0
Direct pages scanned 0 0 0 0
Kswapd pages scanned 0 0 0 0
Kswapd pages reclaimed 0 0 0 0
Direct pages reclaimed 0 0 0 0
Kswapd efficiency 100% 100% 100% 100%
Kswapd velocity 0.000 0.000 0.000 0.000
Direct efficiency 100% 100% 100% 100%
Direct velocity 0.000 0.000 0.000 0.000
Percentage direct scans 0% 0% 0% 0%
Page writes by reclaim 0 0 0 0
Page writes file 0 0 0 0
Page writes anon 0 0 0 0
Page reclaim immediate 0 0 0 0
Page rescued immediate 0 0 0 0
Slabs scanned 0 0 0 0
Direct inode steals 0 0 0 0
Kswapd inode steals 0 0 0 0
Kswapd skipped wait 0 0 0 0
THP fault alloc 3 3 3 3
THP collapse alloc 0 0 12 0
THP splits 0 0 0 0
THP fault fallback 0 0 0 0
THP collapse fail 0 0 0 0
Compaction stalls 0 0 0 0
Compaction success 0 0 0 0
Compaction failures 0 0 0 0
Page migrate success 0 0 0 25255063
Page migrate failure 0 0 0 0
Compaction pages isolated 0 0 0 0
Compaction migrate scanned 0 0 0 0
Compaction free scanned 0 0 0 0
Compaction cost 0 0 0 26214
NUMA PTE updates 0 0 0 206844060
NUMA hint faults 0 0 0 201377412
NUMA hint local faults 0 0 0 51864509
NUMA pages migrated 0 0 0 25255063
AutoNUMA cost 0 0 0 1008814
THP is not in use. Migrations for balancenuma were at 13MB/sec which is better
than has been seen before but should still be lower.
Next I ran NPB (http://www.nas.nasa.gov/publications/npb.htm) as an
example of a workload of interest to HPC. I made little or no attempt to
be clever here. Defaults were used instead of trying to tune to achieve
peak performance. I used the Class C problem set size as Class D was being
pushed to swap on my machine. This means that the benchmark is not using that
much memory but it will be using a lot of the CPUs so it is still useful.
For MPI, it is mostly process based and running in local mode was using
large files in /tmp/ to communicate. So it's using shared memory but not
system V shmem.
OpenMP is thread based.
I analysed neither set of workloads closely. It was just a blind punt.
NAS MPI
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
Time cg.C 59.92 ( 0.00%) 56.59 ( 5.56%) 58.66 ( 2.10%) 53.58 ( 10.58%)
Time ep.C 18.07 ( 0.00%) 18.96 ( -4.93%) 18.12 ( -0.28%) 18.86 ( -4.37%)
Time ft.C 51.57 ( 0.00%) 53.67 ( -4.07%) 53.60 ( -3.94%) 51.81 ( -0.47%)
Time is.C 2.85 ( 0.00%) 4.19 (-47.02%) 3.26 (-14.39%) 3.34 (-17.19%)
Time lu.C 160.07 ( 0.00%) 142.26 ( 11.13%) 138.43 ( 13.52%) 139.71 ( 12.72%)
Time mg.C 24.46 ( 0.00%) 23.57 ( 3.64%) 24.71 ( -1.02%) 22.73 ( 7.07%)
Everyone regressed on is.C and ep.C which are very short-lived. mg.C showed
gains and losses but again is very short-lived. Of what's left
cg.C balancenuma best but not by that great a margin
ft.C balancenuma "best" by a small margin and is close to mainline
lu.C autonuma best by a small margin
mg.C balancenuma best by a small margin
The differences between the trees is not massive any may be within the noise.
The fact is that the tests are too short-lived to be really useful. It's a
pity that class D is not usable on this machine because it starts using swap.
I'll investigate if something can be done about that.
MMTests Statistics: duration
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
User 8279.08 7415.87 7564.98 7427.82
System 2309.04 2608.66 2432.62 2306.59
Elapsed 366.62 350.35 349.25 341.20
numacore is a bit high on the system CPU usage side but not as excessive
as it can be.
MMTests Statistics: vmstat
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
Page Ins 33256 36576 36448 36508
Page Outs 732304 832596 745144 590296
Swap Ins 0 0 0 0
Swap Outs 0 0 0 0
Direct pages scanned 0 0 0 0
Kswapd pages scanned 0 0 0 0
Kswapd pages reclaimed 0 0 0 0
Direct pages reclaimed 0 0 0 0
Kswapd efficiency 100% 100% 100% 100%
Kswapd velocity 0.000 0.000 0.000 0.000
Direct efficiency 100% 100% 100% 100%
Direct velocity 0.000 0.000 0.000 0.000
Percentage direct scans 0% 0% 0% 0%
Page writes by reclaim 0 0 0 0
Page writes file 0 0 0 0
Page writes anon 0 0 0 0
Page reclaim immediate 0 0 0 0
Page rescued immediate 0 0 0 0
Slabs scanned 0 0 0 0
Direct inode steals 0 0 0 0
Kswapd inode steals 0 0 0 0
Kswapd skipped wait 0 0 0 0
THP fault alloc 7532 7524 7526 7530
THP collapse alloc 19 0 100 21
THP splits 0 0 8 1
THP fault fallback 0 0 0 0
THP collapse fail 0 0 0 0
Compaction stalls 0 0 0 0
Compaction success 0 0 0 0
Compaction failures 0 0 0 0
Page migrate success 0 0 0 1954996
Page migrate failure 0 0 0 0
Compaction pages isolated 0 0 0 0
Compaction migrate scanned 0 0 0 0
Compaction free scanned 0 0 0 0
Compaction cost 0 0 0 2029
NUMA PTE updates 0 0 0 106542884
NUMA hint faults 0 0 0 2634360
NUMA hint local faults 0 0 0 2385326
NUMA pages migrated 0 0 0 1954996
AutoNUMA cost 0 0 0 13954
THP was in use but otherwise it's hard to conclude anything useful. Each
workload is very different so we cannot draw reasonable conclusions from
the amount of data migrated.
NAS OMP
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15 numacore-20121126 autonuma-v28fastr4 balancenuma-v8r6
Time bt.C 167.76 ( 0.00%) 189.34 (-12.86%) 166.28 ( 0.88%) 169.68 ( -1.14%)
Time cg.C 44.52 ( 0.00%) 61.84 (-38.90%) 52.11 (-17.05%) 46.71 ( -4.92%)
Time ep.C 12.66 ( 0.00%) 15.41 (-21.72%) 12.35 ( 2.45%) 12.21 ( 3.55%)
Time ft.C 32.55 ( 0.00%) 37.77 (-16.04%) 35.21 ( -8.17%) 32.85 ( -0.92%)
Time is.C 1.69 ( 0.00%) 2.28 (-34.91%) 1.95 (-15.38%) 1.68 ( 0.59%)
Time lu.C 88.12 ( 0.00%) 135.42 (-53.68%) 120.73 (-37.01%) 91.07 ( -3.35%)
Time mg.C 26.62 ( 0.00%) 33.15 (-24.53%) 29.07 ( -9.20%) 28.08 ( -5.48%)
Time sp.C 783.74 ( 0.00%) 450.35 ( 42.54%) 384.51 ( 50.94%) 413.22 ( 47.28%)
Time ua.C 201.91 ( 0.00%) 173.32 ( 14.16%) 187.70 ( 7.04%) 172.80 ( 14.42%)
Note that OpenMP runs more tests. At some time in the past, the equivalent
tests were not compiling for OpenMPI and the MMTests script does not even try
and run time. I'll recheck if this is still the case of if it can be fixed.
numacore and autonuma did really badly on lu.C, worth looking at what that
benchmark is doing. balancenuma looks like it did ok but am cautious about it
and would prefer it if was more than once.
Otherwise, numacore regressed a number of the remaining tests but
saw large gains for sp and ua.
autonuma fares much better but there are large regressions there too.
balancenuma did ok. Generally though, this series of benchmark has issued
a few challenges that will need to be answered.
MMTests Statistics: duration
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
User 60286.11 46017.38 41803.90 42021.18
System 68.02 1430.31 118.75 166.79
Elapsed 1495.34 1236.03 1131.33 1103.99
numacores system CPU usage is comparatively very high again.
MMTests Statistics: vmstat
3.7.0-rc7 3.7.0-rc6 3.7.0-rc7 3.7.0-rc7
stats-v6r15numacore-20121126autonuma-v28fastr4balancenuma-v8r6
Page Ins 37544 37288 37428 37404
Page Outs 19240 17908 17244 17600
Swap Ins 0 0 0 0
Swap Outs 0 0 0 0
Direct pages scanned 0 0 0 0
Kswapd pages scanned 0 0 0 0
Kswapd pages reclaimed 0 0 0 0
Direct pages reclaimed 0 0 0 0
Kswapd efficiency 100% 100% 100% 100%
Kswapd velocity 0.000 0.000 0.000 0.000
Direct efficiency 100% 100% 100% 100%
Direct velocity 0.000 0.000 0.000 0.000
Percentage direct scans 0% 0% 0% 0%
Page writes by reclaim 0 0 0 0
Page writes file 0 0 0 0
Page writes anon 0 0 0 0
Page reclaim immediate 0 0 0 0
Page rescued immediate 0 0 0 0
Slabs scanned 0 0 0 0
Direct inode steals 0 0 0 0
Kswapd inode steals 0 0 0 0
Kswapd skipped wait 0 0 0 0
THP fault alloc 15700 15798 15495 15696
THP collapse alloc 13 2 98 8
THP splits 0 0 2 1
THP fault fallback 0 0 0 0
THP collapse fail 0 0 0 0
Compaction stalls 0 0 0 0
Compaction success 0 0 0 0
Compaction failures 0 0 0 0
Page migrate success 0 0 0 2814591
Page migrate failure 0 0 0 0
Compaction pages isolated 0 0 0 0
Compaction migrate scanned 0 0 0 0
Compaction free scanned 0 0 0 0
Compaction cost 0 0 0 2921
NUMA PTE updates 0 0 0 49389870
NUMA hint faults 0 0 0 1575920
NUMA hint local faults 0 0 0 961230
NUMA pages migrated 0 0 0 2814591
AutoNUMA cost 0 0 0 8278
THP is in use but as each workload is very different we cannot really draw
sensible conclusions from the other stats.
Finally, the following are just rudimentary tests to check some basics. I'm
not going into heavy details this time because the figures look very similar to
the previous report
kernbench - numacore -2.50%
autonuma -0.49%
balancenuma -0.60%
aim9 - everyone ok
hackbench-pipes - same as before. numacore, balancenuma ok. autonuma regressed heavily
hackbench-socket- same
pft - same as before. numacore, balancenuma ok. autonuma high system CPU usage
similar with fault rates. numacore, balancenuma ok. autonuma regresses heavily
There you have it. Some good results, some great, some bad results, some
disastrous. Of course this is for only one machine and other machines
might report differently.
numacore does very well with THP enabled on a single JVM for specjbb
and does very well for an adverse workload in autonumabench. However,
in other benchmarks it can regress heavily and it's system CPU usage can
be excessive. I'm still of the opinion that it should be rebased on top
of balancenuma and evaulated against it.
autonuma does very well in a number of configurations but there are too
many people unhappy with how it integrates with the core kernel. It would
also be nice if the placement policies part could be rebased on top of
balancenuma where it could get a fair like-like comparison with numacore.
balancenuma did pretty well overall. It generally was an improvement on
the baseline kernel but there are cases where it could really benefit
from a placement policy on top that could place the memory and quickly
reduce the PTE scan rates and number of migrations. I think it's the best
starting point we have available right now.
Comments?
--
Mel Gorman
SUSE Labs.
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