[RFC PATCH v0 0/3] sched/numa: Process Adaptive autoNUMA

From: Bharata B Rao
Date: Fri Jan 28 2022 - 00:29:18 EST

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Hi,

This patchset implements an adaptive algorithm for calculating the autonuma
scan period. In the existing mechanism of scan period calculation,

- scan period is derived from the per-thread stats.
- static threshold (NUMA_PERIOD_THRESHOLD) is used for changing the
scan rate.

In this new approach (Process Adaptive autoNUMA or PAN), we gather NUMA
fault stats at per-process level which allows for capturing the application
behaviour better. In addition, the algorithm learns and adjusts the scan
rate based on remote fault rate. By not sticking to a static threshold, the
algorithm can respond better to different workload behaviours.

Since the threads of a processes are already considered as a group,
we add a bunch of metrics to the task's mm to track the various
types of faults and derive the scan rate from them.

The new per-process fault stats contribute only to the per-process
scan period calculation, while the existing per-thread stats continue
to contribute towards the numa_group stats which eventually
determine the thresholds for migrating memory and threads
across nodes.

This patchset has been tested with a bunch of benchmarks on the
following system:

2 socket AMD Milan System
32 cores or 64 threads per socket
256GB memory per socket amounting to 512GB in total
transparent_hugepage=never has been used for all the below tests.
NPS1 NUMA configuration where each socket is a NUMA node

$ numactl -H
available: 2 nodes (0-1)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
node 0 size: 257645 MB
node 0 free: 255193 MB
node 1 cpus: 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
node 1 size: 257984 MB
node 1 free: 257017 MB
node distances:
node 0 1
0: 10 32
1: 32 10

While this is an early version that we are experimenting on NPS1
configuration with THP off, we plan to test it on other configurations
as well. However posting it now for some early feedback.

Here are the numbers from some of the benchmarks that we have
tried. A brief description of these benchmarks is also given at
end of this mail. The detailed results are available at
https://drive.google.com/drive/folders/1O7sY-YBsT3F5GHZMiOGQbXkgpp6O0BEo

Plots of how scan period varies in default vs PAN for a couple
of benchmarks are also present in the above folder.

------------------------------------------------------
% gain of PAN vs default (Avg of 3 runs)
------------------------------------------------------
NAS-BT -0.17
NAS-CG +9.39
NAS-MG +8.19
NAS-FT +2.23
Hashjoin +0.58
Graph500 +14.93
Pagerank +0.37
------------------------------------------------------
Default PAN %diff
------------------------------------------------------
NUMA hint faults(Total of 3 runs)
------------------------------------------------------
NAS-BT 758282358 539850429 +29
NAS-CG 2179458823 1180301361 +46
NAS-MG 517641172 346066391 +33
NAS-FT 297044964 230033861 +23
Hashjoin 201684863 268436275 -33
Graph500 261808733 154338827 +41
Pagerank 217917818 211260310 +03
------------------------------------------------------
Migrations(Total of 3 runs)
------------------------------------------------------
NAS-BT 106888517 86482076 +19
NAS-CG 81191368 12859924 +84
NAS-MG 83927451 39651254 +53
NAS-FT 61807715 38934618 +37
Hashjoin 45406983 59828843 -32
Graph500 22798837 21560714 +05
Pagerank 59072135 44968673 +24
------------------------------------------------------

And here are some tests from a few microbenchmarks of mmtests suite.
(The results are trimmed a bit here, the complete results can
be viewed in the above mentioned link)

Hackbench
---------
hackbench-process-pipes
hackbench hackbench
default pan
Min 256 23.5510 ( 0.00%) 23.1900 ( 1.53%)
Amean 256 24.4604 ( 0.00%) 24.0353 * 1.74%*
Stddev 256 0.4420 ( 0.00%) 0.7611 ( -72.18%)
CoeffVar 256 1.8072 ( 0.00%) 3.1666 ( -75.22%)
Max 256 25.4930 ( 0.00%) 30.5450 ( -19.82%)
BAmean-50 256 24.1074 ( 0.00%) 23.6616 ( 1.85%)
BAmean-95 256 24.4111 ( 0.00%) 23.9308 ( 1.97%)
BAmean-99 256 24.4499 ( 0.00%) 23.9696 ( 1.96%)

hackbench hackbench
default pan
Duration User 25810.02 25158.93
Duration System 276322.70 271729.32
Duration Elapsed 2707.75 2671.33

hackbench hackbench
default pan
Ops NUMA alloc hit 1082415453.00 1088025994.00
Ops NUMA alloc miss 0.00 0.00
Ops NUMA interleave hit 0.00 0.00
Ops NUMA alloc local 1082415441.00 1088025974.00
Ops NUMA base-page range updates 33475.00 228900.00
Ops NUMA PTE updates 33475.00 228900.00
Ops NUMA PMD updates 0.00 0.00
Ops NUMA hint faults 15758.00 222100.00
Ops NUMA hint local faults % 15371.00 214570.00
Ops NUMA hint local percent 97.54 96.61
Ops NUMA pages migrated 235.00 4029.00
Ops AutoNUMA cost 79.03 1112.18

tbench
------
tbench4
tbench tbench
default pan
Hmean 1 436.89 ( 0.00%) 432.73 * -0.95%*
Hmean 2 834.27 ( 0.00%) 848.11 * 1.66%*
Hmean 4 1629.50 ( 0.00%) 1614.22 * -0.94%*
Hmean 8 2944.06 ( 0.00%) 3031.66 * 2.98%*
Hmean 16 5418.25 ( 0.00%) 5674.74 * 4.73%*
Hmean 32 9959.60 ( 0.00%) 9009.82 * -9.54%*
Hmean 64 13999.14 ( 0.00%) 12160.51 * -13.13%*
Hmean 128 16797.09 ( 0.00%) 16506.14 * -1.73%*
Hmean 256 25344.27 ( 0.00%) 25683.66 * 1.34%*
Hmean 512 25289.03 ( 0.00%) 25513.77 * 0.89%*
BHmean-50 1 437.13 ( 0.00%) 433.01 ( -0.94%)
BHmean-50 2 836.35 ( 0.00%) 848.85 ( 1.49%)
BHmean-50 4 1631.39 ( 0.00%) 1618.43 ( -0.79%)
BHmean-50 8 2948.25 ( 0.00%) 3037.86 ( 3.04%)
BHmean-50 16 5425.17 ( 0.00%) 5684.25 ( 4.78%)
BHmean-50 32 9969.17 ( 0.00%) 9034.06 ( -9.38%)
BHmean-50 64 14013.93 ( 0.00%) 12202.07 ( -12.93%)
BHmean-50 128 16881.94 ( 0.00%) 16571.27 ( -1.84%)
BHmean-50 256 25379.59 ( 0.00%) 25819.18 ( 1.73%)
BHmean-50 512 25435.41 ( 0.00%) 25718.02 ( 1.11%)
BHmean-95 1 436.92 ( 0.00%) 432.81 ( -0.94%)
BHmean-95 2 834.59 ( 0.00%) 848.23 ( 1.63%)
BHmean-95 4 1629.73 ( 0.00%) 1614.83 ( -0.91%)
BHmean-95 8 2945.02 ( 0.00%) 3032.19 ( 2.96%)
BHmean-95 16 5418.86 ( 0.00%) 5675.91 ( 4.74%)
BHmean-95 32 9962.57 ( 0.00%) 9014.17 ( -9.52%)
BHmean-95 64 14002.44 ( 0.00%) 12164.32 ( -13.13%)
BHmean-95 128 16820.56 ( 0.00%) 16522.82 ( -1.77%)
BHmean-95 256 25347.34 ( 0.00%) 25692.56 ( 1.36%)
BHmean-95 512 25302.10 ( 0.00%) 25528.52 ( 0.89%)
BHmean-99 1 436.90 ( 0.00%) 432.75 ( -0.95%)
BHmean-99 2 834.35 ( 0.00%) 848.17 ( 1.66%)
BHmean-99 4 1629.57 ( 0.00%) 1614.38 ( -0.93%)
BHmean-99 8 2944.36 ( 0.00%) 3031.77 ( 2.97%)
BHmean-99 16 5418.40 ( 0.00%) 5675.01 ( 4.74%)
BHmean-99 32 9961.01 ( 0.00%) 9011.43 ( -9.53%)
BHmean-99 64 14000.68 ( 0.00%) 12161.34 ( -13.14%)
BHmean-99 128 16803.44 ( 0.00%) 16511.94 ( -1.73%)
BHmean-99 256 25344.93 ( 0.00%) 25685.57 ( 1.34%)
BHmean-99 512 25291.87 ( 0.00%) 25516.94 ( 0.89%)

tbench tbench
default pan
Duration User 8482.50 8289.35
Duration System 49462.63 49364.56
Duration Elapsed 2217.10 2217.08

tbench tbench
default pan
Ops NUMA alloc hit 388738400.00 378941469.00
Ops NUMA alloc miss 0.00 0.00
Ops NUMA interleave hit 0.00 0.00
Ops NUMA alloc local 388738391.00 378941455.00
Ops NUMA base-page range updates 266760.00 266275.00
Ops NUMA PTE updates 266760.00 266275.00
Ops NUMA PMD updates 0.00 0.00
Ops NUMA hint faults 241547.00 257790.00
Ops NUMA hint local faults % 145814.00 126410.00
Ops NUMA hint local percent 60.37 49.04
Ops NUMA pages migrated 51535.00 66083.00
Ops AutoNUMA cost 1210.58 1292.07

dbench
------
dbench4 Latency
dbench dbench
default pan
Amean latency-1 2.02 ( 0.00%) 2.05 * -1.52%*
Amean latency-2 2.60 ( 0.00%) 2.55 * 1.64%*
Amean latency-4 3.52 ( 0.00%) 3.56 * -1.17%*
Amean latency-8 12.79 ( 0.00%) 11.83 * 7.49%*
Amean latency-16 23.33 ( 0.00%) 19.09 * 18.19%*
Amean latency-32 19.30 ( 0.00%) 18.83 * 2.43%*
Amean latency-64 25.32 ( 0.00%) 24.30 * 4.00%*
Amean latency-128 45.25 ( 0.00%) 42.93 * 5.13%*
Amean latency-1024 0.00 ( 0.00%) 0.00 * 0.00%*
BAmean-50 latency-1 1.65 ( 0.00%) 1.74 ( -5.16%)
BAmean-50 latency-2 2.10 ( 0.00%) 2.10 ( -0.13%)
BAmean-50 latency-4 2.65 ( 0.00%) 2.71 ( -2.28%)
BAmean-50 latency-8 6.21 ( 0.00%) 4.64 ( 25.30%)
BAmean-50 latency-16 17.64 ( 0.00%) 14.08 ( 20.16%)
BAmean-50 latency-32 15.58 ( 0.00%) 15.90 ( -2.07%)
BAmean-50 latency-64 20.76 ( 0.00%) 20.31 ( 2.15%)
BAmean-50 latency-128 36.22 ( 0.00%) 34.85 ( 3.80%)
BAmean-50 latency-1024 0.00 ( 0.00%) 0.00 ( 0.00%)
BAmean-95 latency-1 1.88 ( 0.00%) 1.94 ( -3.17%)
BAmean-95 latency-2 2.25 ( 0.00%) 2.26 ( -0.26%)
BAmean-95 latency-4 3.00 ( 0.00%) 3.08 ( -2.71%)
BAmean-95 latency-8 11.66 ( 0.00%) 10.03 ( 13.97%)
BAmean-95 latency-16 22.30 ( 0.00%) 17.68 ( 20.73%)
BAmean-95 latency-32 17.95 ( 0.00%) 17.70 ( 1.38%)
BAmean-95 latency-64 23.57 ( 0.00%) 22.72 ( 3.62%)
BAmean-95 latency-128 42.44 ( 0.00%) 39.96 ( 5.84%)
BAmean-95 latency-1024 0.00 ( 0.00%) 0.00 ( 0.00%)
BAmean-99 latency-1 1.90 ( 0.00%) 1.96 ( -3.30%)
BAmean-99 latency-2 2.38 ( 0.00%) 2.37 ( 0.48%)
BAmean-99 latency-4 3.24 ( 0.00%) 3.34 ( -3.26%)
BAmean-99 latency-8 12.34 ( 0.00%) 10.71 ( 13.27%)
BAmean-99 latency-16 22.79 ( 0.00%) 18.27 ( 19.82%)
BAmean-99 latency-32 18.68 ( 0.00%) 18.32 ( 1.93%)
BAmean-99 latency-64 24.69 ( 0.00%) 23.69 ( 4.06%)
BAmean-99 latency-128 44.44 ( 0.00%) 42.15 ( 5.17%)
BAmean-99 latency-1024 0.00 ( 0.00%) 0.00 ( 0.00%)

dbench4 Throughput (misleading but traditional)
dbench dbench
default pan
Hmean 1 505.12 ( 0.00%) 492.96 * -2.41%*
Hmean 2 824.14 ( 0.00%) 824.06 * -0.01%*
Hmean 4 1174.61 ( 0.00%) 1207.86 * 2.83%*
Hmean 8 1665.10 ( 0.00%) 1667.27 * 0.13%*
Hmean 16 2215.59 ( 0.00%) 2160.93 * -2.47%*
Hmean 32 2727.05 ( 0.00%) 2633.26 * -3.44%*
Hmean 64 3128.64 ( 0.00%) 3098.73 * -0.96%*
Hmean 128 3282.89 ( 0.00%) 3340.26 * 1.75%*
Hmean 1024 2551.02 ( 0.00%) 2559.41 * 0.33%*
BHmean-50 1 509.87 ( 0.00%) 495.10 ( -2.90%)
BHmean-50 2 829.35 ( 0.00%) 828.14 ( -0.15%)
BHmean-50 4 1182.38 ( 0.00%) 1219.30 ( 3.12%)
BHmean-50 8 1678.49 ( 0.00%) 1678.83 ( 0.02%)
BHmean-50 16 2251.01 ( 0.00%) 2194.52 ( -2.51%)
BHmean-50 32 2751.39 ( 0.00%) 2678.45 ( -2.65%)
BHmean-50 64 3189.69 ( 0.00%) 3154.45 ( -1.10%)
BHmean-50 128 3396.18 ( 0.00%) 3451.59 ( 1.63%)
BHmean-50 1024 2836.80 ( 0.00%) 2836.84 ( 0.00%)
BHmean-95 1 506.13 ( 0.00%) 493.24 ( -2.55%)
BHmean-95 2 824.84 ( 0.00%) 824.30 ( -0.06%)
BHmean-95 4 1175.91 ( 0.00%) 1208.57 ( 2.78%)
BHmean-95 8 1666.46 ( 0.00%) 1668.22 ( 0.11%)
BHmean-95 16 2219.59 ( 0.00%) 2163.86 ( -2.51%)
BHmean-95 32 2731.26 ( 0.00%) 2640.34 ( -3.33%)
BHmean-95 64 3144.73 ( 0.00%) 3108.59 ( -1.15%)
BHmean-95 128 3306.51 ( 0.00%) 3363.33 ( 1.72%)
BHmean-95 1024 2658.37 ( 0.00%) 2668.88 ( 0.40%)
BHmean-99 1 505.37 ( 0.00%) 493.08 ( -2.43%)
BHmean-99 2 824.31 ( 0.00%) 824.12 ( -0.02%)
BHmean-99 4 1174.94 ( 0.00%) 1208.02 ( 2.81%)
BHmean-99 8 1665.40 ( 0.00%) 1667.48 ( 0.12%)
BHmean-99 16 2216.51 ( 0.00%) 2161.60 ( -2.48%)
BHmean-99 32 2728.09 ( 0.00%) 2635.09 ( -3.41%)
BHmean-99 64 3135.81 ( 0.00%) 3102.12 ( -1.07%)
BHmean-99 128 3291.11 ( 0.00%) 3349.16 ( 1.76%)
BHmean-99 1024 2645.54 ( 0.00%) 2655.67 ( 0.38%)

dbench dbench
default pan
Duration User 822.55 827.85
Duration System 8384.99 8164.83
Duration Elapsed 1671.36 1670.74

dbench dbench
default pan
Ops NUMA alloc hit 183324626.00 182350114.00
Ops NUMA alloc miss 0.00 0.00
Ops NUMA interleave hit 0.00 0.00
Ops NUMA alloc local 183324508.00 182350004.00
Ops NUMA base-page range updates 181531.00 515929.00
Ops NUMA PTE updates 181531.00 515929.00
Ops NUMA PMD updates 0.00 0.00
Ops NUMA hint faults 162742.00 510979.00
Ops NUMA hint local faults % 120309.00 426848.00
Ops NUMA hint local percent 73.93 83.54
Ops NUMA pages migrated 37605.00 59519.00
Ops AutoNUMA cost 815.70 2559.64

Netperf-RR
----------
netperf-udp-rr
netperf netperf
rr-default rr-pan
Min 1 104915.69 ( 0.00%) 104505.71 ( -0.39%)
Hmean 1 105865.46 ( 0.00%) 105899.22 * 0.03%*
Stddev 1 528.45 ( 0.00%) 881.92 ( -66.89%)
CoeffVar 1 0.50 ( 0.00%) 0.83 ( -66.83%)
Max 1 106410.28 ( 0.00%) 107196.52 ( 0.74%)
BHmean-50 1 106232.53 ( 0.00%) 106568.26 ( 0.32%)
BHmean-95 1 105972.05 ( 0.00%) 106056.35 ( 0.08%)
BHmean-99 1 105972.05 ( 0.00%) 106056.35 ( 0.08%)

netperf netperf
rr-default rr-pan
Duration User 11.20 10.74
Duration System 202.40 201.32
Duration Elapsed 303.09 303.08

netperf netperf
rr-default rr-pan
Ops NUMA alloc hit 183999.00 183853.00
Ops NUMA alloc miss 0.00 0.00
Ops NUMA interleave hit 0.00 0.00
Ops NUMA alloc local 183999.00 183853.00
Ops NUMA base-page range updates 0.00 24370.00
Ops NUMA PTE updates 0.00 24370.00
Ops NUMA PMD updates 0.00 0.00
Ops NUMA hint faults 539.00 24470.00
Ops NUMA hint local faults % 539.00 24447.00
Ops NUMA hint local percent 100.00 99.91
Ops NUMA pages migrated 0.00 23.00
Ops AutoNUMA cost 2.69 122.52

netperf-tcp-rr
netperf netperf
rr-default rr-pan
Min 1 96156.03 ( 0.00%) 96556.87 ( 0.42%)
Hmean 1 96627.24 ( 0.00%) 97551.38 * 0.96%*
Stddev 1 284.71 ( 0.00%) 637.74 (-123.99%)
CoeffVar 1 0.29 ( 0.00%) 0.65 (-121.87%)
Max 1 96974.45 ( 0.00%) 98554.94 ( 1.63%)
BHmean-50 1 96840.81 ( 0.00%) 98067.19 ( 1.27%)
BHmean-95 1 96679.89 ( 0.00%) 97663.14 ( 1.02%)
BHmean-99 1 96679.89 ( 0.00%) 97663.14 ( 1.02%)

netperf netperf
rr-default rr-pan
Duration User 10.21 10.26
Duration System 207.90 208.28
Duration Elapsed 302.99 303.02

netperf netperf
rr-default rr-pan
Ops NUMA alloc hit 183669.00 183695.00
Ops NUMA alloc miss 0.00 0.00
Ops NUMA interleave hit 0.00 0.00
Ops NUMA alloc local 183657.00 183695.00
Ops NUMA base-page range updates 3949.00 38561.00
Ops NUMA PTE updates 3949.00 38561.00
Ops NUMA PMD updates 0.00 0.00
Ops NUMA hint faults 4186.00 43328.00
Ops NUMA hint local faults % 4100.00 43195.00
Ops NUMA hint local percent 97.95 99.69
Ops NUMA pages migrated 9.00 73.00
Ops AutoNUMA cost 20.96 216.91

Autonumabench
-------------
autonumabench
autonumabench autonumabench
default pan
Amean syst-NUMA01 11664.40 ( 0.00%) 11616.17 * 0.41%*
Amean syst-NUMA01_THREADLOCAL 0.24 ( 0.00%) 0.22 * 7.78%*
Amean syst-NUMA02 1.55 ( 0.00%) 9.31 *-499.26%*
Amean syst-NUMA02_SMT 1.14 ( 0.00%) 4.04 *-254.39%*
Amean elsp-NUMA01 223.52 ( 0.00%) 221.43 * 0.93%*
Amean elsp-NUMA01_THREADLOCAL 0.95 ( 0.00%) 0.94 * 0.76%*
Amean elsp-NUMA02 6.83 ( 0.00%) 5.74 * 15.90%*
Amean elsp-NUMA02_SMT 6.65 ( 0.00%) 6.25 * 5.97%*
BAmean-50 syst-NUMA01 11455.44 ( 0.00%) 10985.76 ( 4.10%)
BAmean-50 syst-NUMA01_THREADLOCAL 0.22 ( 0.00%) 0.21 ( 7.46%)
BAmean-50 syst-NUMA02 1.11 ( 0.00%) 8.91 (-703.00%)
BAmean-50 syst-NUMA02_SMT 0.94 ( 0.00%) 3.42 (-262.19%)
BAmean-50 elsp-NUMA01 217.38 ( 0.00%) 214.03 ( 1.54%)
BAmean-50 elsp-NUMA01_THREADLOCAL 0.94 ( 0.00%) 0.94 ( 0.35%)
BAmean-50 elsp-NUMA02 6.66 ( 0.00%) 5.45 ( 18.08%)
BAmean-50 elsp-NUMA02_SMT 6.50 ( 0.00%) 6.09 ( 6.31%)
BAmean-95 syst-NUMA01 11611.74 ( 0.00%) 11448.30 ( 1.41%)
BAmean-95 syst-NUMA01_THREADLOCAL 0.23 ( 0.00%) 0.22 ( 7.14%)
BAmean-95 syst-NUMA02 1.27 ( 0.00%) 9.21 (-624.93%)
BAmean-95 syst-NUMA02_SMT 0.97 ( 0.00%) 3.90 (-300.34%)
BAmean-95 elsp-NUMA01 221.75 ( 0.00%) 218.53 ( 1.45%)
BAmean-95 elsp-NUMA01_THREADLOCAL 0.94 ( 0.00%) 0.94 ( 0.53%)
BAmean-95 elsp-NUMA02 6.75 ( 0.00%) 5.68 ( 15.81%)
BAmean-95 elsp-NUMA02_SMT 6.61 ( 0.00%) 6.23 ( 5.82%)
BAmean-99 syst-NUMA01 11611.74 ( 0.00%) 11448.30 ( 1.41%)
BAmean-99 syst-NUMA01_THREADLOCAL 0.23 ( 0.00%) 0.22 ( 7.14%)
BAmean-99 syst-NUMA02 1.27 ( 0.00%) 9.21 (-624.93%)
BAmean-99 syst-NUMA02_SMT 0.97 ( 0.00%) 3.90 (-300.34%)
BAmean-99 elsp-NUMA01 221.75 ( 0.00%) 218.53 ( 1.45%)
BAmean-99 elsp-NUMA01_THREADLOCAL 0.94 ( 0.00%) 0.94 ( 0.53%)
BAmean-99 elsp-NUMA02 6.75 ( 0.00%) 5.68 ( 15.81%)
BAmean-99 elsp-NUMA02_SMT 6.61 ( 0.00%) 6.23 ( 5.82%)

autonumabenchautonumabench
default pan
Duration User 94363.43 94436.71
Duration System 81671.72 81408.53
Duration Elapsed 1676.81 1647.99

autonumabench autonumabench
default pan
Ops NUMA alloc hit 539544115.00 539522029.00
Ops NUMA alloc miss 0.00 0.00
Ops NUMA interleave hit 0.00 0.00
Ops NUMA alloc local 279025768.00 281735736.00
Ops NUMA base-page range updates 69695169.00 84767502.00
Ops NUMA PTE updates 69695169.00 84767502.00
Ops NUMA PMD updates 0.00 0.00
Ops NUMA hint faults 69691818.00 87895044.00
Ops NUMA hint local faults % 56565519.00 65819747.00
Ops NUMA hint local percent 81.17 74.88
Ops NUMA pages migrated 5950362.00 8310169.00
Ops AutoNUMA cost 349060.01 440226.49

Here is a short description of different benchmarks used:

NAS Parallel benchmarks
-----------------------
Using OpenMP version from https://www.nas.nasa.gov/software/npb.html
Variations tried: BT, CG, MT and FT
Memory Footprint:
BT - 170GB
CG - 196GB
MG - 211GB
FT - 81GB
Results: Operations per second.

Hashjoin
--------
Benchmark from IISc that does SQL join between two tables.
Used the version from https://github.com/mitosis-project/mitosis-asplos20-artifact
It performs a fixed number of join operations
Memory Footprint: 80GB
Results: Time taken

Graph500
--------
Benchmark from https://graph500.org/ that does bread first search
on a graph. The score is reported as TEPS (Traversed Edges Per Second).
It comprises of both search and validation phases, but only the
score phase is contributing to the final score here.
Memory Footprint: 70GB
Results: TEPS

PageRank
--------
This is part of GAP Benchmark Suite from https://github.com/sbeamer/gapbs
It performs basic search operations.
Memory Footprint: 91GB
Results: Time taken

Disha Talreja (3):
sched/numa: Process based autonuma scan period framework
sched/numa: Add cumulative history of per-process fault stats
sched/numa: Add adaptive scan period calculation

include/linux/mm_types.h | 14 ++
kernel/sched/debug.c | 2 +
kernel/sched/fair.c | 344 ++++++++++++++++++++++++++++++++++++++-
kernel/sched/sched.h | 2 +
4 files changed, 358 insertions(+), 4 deletions(-)

--
2.25.1

Next message: Bharata B Rao: "[RFC PATCH v0 2/3] sched/numa: Add cumulative history of per-process fault stats"
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