Experimental Results:
====================
Test setup:
----------
x86 Sandybridge dual-socket quad core HT-enabled machine, with 128GB RAM.
Memory Region size = 512MB.
Testcase:
--------
Strategy:
Try to allocate and free large chunks of memory (comparable to that of memory
region size) in multiple threads, and examine the number of completely free
memory regions at the end of the run (when all the memory is freed). (Note
that we don't create any pagecache usage here).
Implementation:
Run 20 instances of multi-threaded ebizzy in parallel, with chunksize=256MB,
and no. of threads=32. This means, potentially 20 * 32 threads can allocate/free
memory in parallel, and each alloc/free size will be 256MB, which is half of
the memory region size.
Cmd-line of each ebizzy instance: ./ebizzy -s 268435456 -n 2 -t 32 -S 60
Effectiveness in consolidating allocations:
------------------------------------------
With the above test case, the higher the number of completely free memory
regions at the end of the run, the better is the memory management algorithm
in consolidating allocations.
Here are the results, with vanilla 3.11-rc7 and with this patchset applied:
Free regions at test-start Free regions after test-run
Without patchset 242 18
With patchset 238 121
This shows that this patchset performs tremendously better than vanilla
kernel in terms of keeping the memory allocations consolidated to a minimum
no. of memory regions. Note that the amount of memory consumed at the end of
the run is 0, so it shows the drastic extent to which the mainline kernel can
fragment memory by spreading a handful of pages across many memory regions.
And since this patchset teaches the kernel to understand the memory region
granularity/boundaries and influences the MM decisions effectively, it shows
a significant improvement over mainline. Also, this improvement is with the
allocator changes alone; targeted compaction (which was dropped in this
version) is expected to show even more benefits.
Below is the log of the variation of the no. of completely free regions
from the beginning to the end of the test, at 1 second intervals (total
test-run takes 1 minute).
Vanilla 3.11-rc7 With this patchset
242 238
242 238
242 238
242 238
242 238
239 236
221 215
196 181
171 139
144 112
117 78
69 48
49 24
27 21
15 21
15 21
15 21
15 21
15 21
15 21
15 22
15 22
15 23
15 23
15 27
15 29
15 29
15 30
15 30
15 30
15 30
15 30
15 30
15 30
15 32
15 33
15 33
15 33
15 33
15 36
15 42
15 42
15 44
15 48
16 111
17 114
17 114
17 114
17 115
17 115
17 115
17 115
17 115
17 115
17 115
17 115
17 115
17 115
17 115
17 115
17 115
17 115
17 115
17 116
17 116
17 116
17 116
17 116
17 116
17 116
17 116
17 116
17 116
17 116
17 116
18 121
It is interesting to also examine the fragmentation of memory by
looking at the per-region statistics added by this patchset.
Statistics for vanilla 3.11-rc7 kernel:
======================================
We can see from the statistics that there is a lot of fragmentation
among the MOVABLE migratetype.
Node 0, zone Normal
pages free 15751188
min 5575
low 6968
high 8362
scanned 0
spanned 16252928
present 16252928
managed 15989951
Per-region page stats present free
Region 0 1 1024
Region 1 131072 131072
Region 2 131072 131072
Region 3 131072 131072
Region 4 131072 131072
Region 5 131072 130045
Region 6 131072 131032
Region 7 131072 131023
Region 8 131072 131022
Region 9 131072 131062
Region 10 131072 131055
Region 11 131072 131064
Region 12 131072 131047
Region 13 131072 131051
Region 14 131072 131056
Region 15 131072 131046
Region 16 131072 131051
Region 17 131072 131061
Region 18 131072 131030
Region 19 131072 130168
Region 20 131072 131937
Region 21 131072 131067
Region 22 131072 131028
Region 23 131072 131051
Region 24 131072 131041
Region 25 131072 131047
Region 26 131072 131051
Region 27 131072 131054
Region 28 131072 131049
Region 29 131072 130994
Region 30 131072 131059
Region 31 131072 131060
Region 32 131072 131051
Region 33 131072 131047
Region 34 131072 131050
Region 35 131072 131050
Region 36 131072 131039
Region 37 131072 131053
Region 38 131072 131045
Region 39 131072 130275
Region 40 131072 131807
Region 41 131072 131050
Region 42 131072 131051
Region 43 131072 131037
Region 44 131072 131052
Region 45 131072 131011
Region 46 131072 131026
Region 47 131072 130285
Region 48 131072 131810
Region 49 131072 131046
Region 50 131072 131049
Region 51 131072 131054
Region 52 131072 131064
Region 53 131072 131053
Region 54 131072 131019
Region 55 131072 130997
Region 56 131072 131039
Region 57 131072 131058
Region 58 131072 130182
Region 59 131072 131057
Region 60 131072 131063
Region 61 131072 131046
Region 62 131072 131055
Region 63 131072 131060
Region 64 131072 131049
Region 65 131072 131042
Region 66 131072 131048
Region 67 131072 131052
Region 68 131072 130997
Region 69 131072 131046
Region 70 131072 131045
Region 71 131072 131028
Region 72 131072 131054
Region 73 131072 131048
Region 74 131072 131052
Region 75 131072 131043
Region 76 131072 131052
Region 77 131072 130542
Region 78 131072 131556
Region 79 131072 131048
Region 80 131072 131043
Region 81 131072 130548
Region 82 131072 131551
Region 83 131072 131019
Region 84 131072 131033
Region 85 131072 131047
Region 86 131072 131059
Region 87 131072 131054
Region 88 131072 131043
Region 89 131072 131035
Region 90 131072 131044
Region 91 131072 130538
Region 92 131072 131560
Region 93 131072 131063
Region 94 131072 131033
Region 95 131072 131046
Region 96 131072 131048
Region 97 131072 131049
Region 98 131072 131058
Region 99 131072 131048
Region 100 131072 130484
Region 101 131072 131557
Region 102 131072 131038
Region 103 131072 131044
Region 104 131072 131040
Region 105 131072 130988
Region 106 131072 131039
Region 107 131072 131009
Region 108 131072 131059
Region 109 131072 131049
Region 110 131072 131050
Region 111 131072 131042
Region 112 131072 131052
Region 113 131072 131053
Region 114 131072 131067
Region 115 131072 131062
Region 116 131072 131072
Region 117 131072 131072
Region 118 131072 129860
Region 119 131072 125402
Region 120 131072 63109
Region 121 131072 84301
Region 122 131072 17009
Region 123 131072 0
Region 124 131071 0
Page block order: 10
Pages per block: 1024
Free pages count per migrate type at order 0 1 2 3 4 5 6 7 8 9 10
Node 0, zone DMA, type Unmovable 1 2 2 1 3 2 0 0 1 1 0
Node 0, zone DMA, type Reclaimable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone DMA, type Movable 0 0 0 0 0 0 0 0 0 0 2
Node 0, zone DMA, type Reserve 0 0 0 0 0 0 0 0 0 0 1
Node 0, zone DMA, type Isolate 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone DMA32, type Unmovable 0 1 0 0 0 0 1 1 1 1 0
Node 0, zone DMA32, type Reclaimable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone DMA32, type Movable 8 10 12 8 10 8 8 6 5 7 436
Node 0, zone DMA32, type Reserve 0 0 0 0 0 0 0 0 0 0 1
Node 0, zone DMA32, type Isolate 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, type Unmovable 8982 9711 5941 2108 611 189 9 0 1 1 0
Node 0, zone Normal, type Reclaimable 0 0 0 0 1 0 0 1 0 0 0
Node 0, zone Normal, type Movable 2349 4937 5264 3716 2323 1859 1689 1602 1412 1310 13826
Node 0, zone Normal, type Reserve 0 0 0 0 0 0 0 0 0 0 2
Node 0, zone Normal, type Isolate 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 0 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 1 Movable 0 0 0 0 0 0 0 0 0 0 127
Node 0, zone Normal, R 2 Movable 0 0 0 0 0 0 0 0 0 0 128
Node 0, zone Normal, R 3 Movable 0 0 0 0 0 0 0 0 0 0 128
Node 0, zone Normal, R 4 Movable 0 0 0 0 0 0 0 0 0 0 128
Node 0, zone Normal, R 5 Movable 3 3 3 3 3 3 3 3 3 3 124
Node 0, zone Normal, R 6 Movable 18 25 25 24 23 22 23 19 19 14 111
Node 0, zone Normal, R 7 Movable 7 16 18 16 12 13 14 8 7 9 119
Node 0, zone Normal, R 8 Movable 12 17 18 17 11 11 13 11 10 11 117
Node 0, zone Normal, R 9 Movable 6 6 7 7 5 6 6 6 6 6 122
Node 0, zone Normal, R 10 Movable 7 10 11 11 11 11 11 11 11 9 118
Node 0, zone Normal, R 11 Movable 8 8 8 8 8 8 8 8 6 7 121
Node 0, zone Normal, R 12 Movable 5 7 11 11 11 11 11 11 11 11 117
Node 0, zone Normal, R 13 Movable 15 18 18 18 18 18 18 18 18 12 113
Node 0, zone Normal, R 14 Movable 6 9 10 8 9 9 9 9 9 9 119
Node 0, zone Normal, R 15 Movable 10 12 15 15 13 14 12 13 13 13 115
Node 0, zone Normal, R 16 Movable 3 4 6 7 7 7 7 7 5 6 122
Node 0, zone Normal, R 17 Movable 1 4 5 5 5 5 5 5 5 5 123
Node 0, zone Normal, R 18 Movable 14 22 25 23 22 21 22 22 22 20 107
Node 0, zone Normal, R 19 Movable 6 7 7 7 7 7 7 8 7 7 120
Node 0, zone Normal, R 20 Movable 9 10 11 13 13 13 11 11 12 10 118
Node 0, zone Normal, R 21 Movable 3 4 4 4 4 4 2 3 3 3 125
Node 0, zone Normal, R 22 Movable 6 11 16 11 14 12 13 13 11 12 116
Node 0, zone Normal, R 23 Movable 11 14 15 15 15 15 15 15 13 14 114
Node 0, zone Normal, R 24 Movable 7 11 13 14 14 14 12 13 13 13 115
Node 0, zone Normal, R 25 Movable 7 12 12 13 11 12 12 12 12 12 116
Node 0, zone Normal, R 26 Movable 5 9 11 11 11 11 11 11 9 10 118
Node 0, zone Normal, R 27 Movable 8 13 13 13 11 10 11 9 8 9 119
Node 0, zone Normal, R 28 Movable 11 13 13 12 11 12 12 10 9 8 119
Node 0, zone Normal, R 29 Movable 20 27 28 27 26 24 22 22 19 17 109
Node 0, zone Normal, R 30 Movable 5 9 9 9 9 9 9 9 9 7 120
Node 0, zone Normal, R 31 Movable 6 7 6 7 7 7 7 7 7 5 122
Node 0, zone Normal, R 32 Movable 1 5 8 8 8 8 8 8 8 8 120
Node 0, zone Normal, R 33 Movable 5 9 10 11 11 11 11 11 11 9 118
Node 0, zone Normal, R 34 Movable 6 8 9 10 8 7 8 8 8 8 120
Node 0, zone Normal, R 35 Movable 14 18 16 17 17 15 16 16 14 13 114
Node 0, zone Normal, R 36 Movable 11 16 19 19 17 18 16 17 15 16 112
Node 0, zone Normal, R 37 Movable 15 17 17 17 17 17 17 17 15 14 113
Node 0, zone Normal, R 38 Movable 7 13 15 15 15 15 15 15 13 12 115
Node 0, zone Normal, R 39 Movable 11 18 19 19 17 16 17 15 15 11 114
Node 0, zone Normal, R 40 Movable 13 21 18 18 19 15 15 16 13 13 115
Node 0, zone Normal, R 41 Movable 4 7 10 10 10 10 10 10 10 10 118
Node 0, zone Normal, R 42 Movable 13 15 16 14 11 13 13 13 13 11 116
Node 0, zone Normal, R 43 Movable 13 16 16 18 18 18 18 18 14 16 112
Node 0, zone Normal, R 44 Movable 10 11 11 12 12 12 12 12 12 12 116
Node 0, zone Normal, R 45 Movable 13 19 20 22 21 22 20 21 17 15 111
Node 0, zone Normal, R 46 Movable 10 16 16 19 19 19 19 19 15 15 112
Node 0, zone Normal, R 47 Movable 11 15 15 13 14 14 14 14 13 11 115
Node 0, zone Normal, R 48 Movable 8 15 17 17 15 16 14 15 12 14 115
Node 0, zone Normal, R 49 Movable 8 9 11 12 12 12 12 10 11 9 118
Node 0, zone Normal, R 50 Movable 9 12 14 14 14 12 13 13 13 13 115
Node 0, zone Normal, R 51 Movable 8 11 12 12 12 12 12 12 10 7 119
Node 0, zone Normal, R 52 Movable 8 8 8 8 8 8 8 8 8 8 120
Node 0, zone Normal, R 53 Movable 9 12 13 13 13 13 13 13 13 11 116
Node 0, zone Normal, R 54 Movable 11 14 19 19 18 19 15 17 15 10 115
Node 0, zone Normal, R 55 Movable 13 14 15 16 17 16 17 17 15 16 112
Node 0, zone Normal, R 56 Movable 3 8 11 12 12 12 12 10 9 10 118
Node 0, zone Normal, R 57 Movable 4 9 9 7 8 8 8 8 8 8 120
Node 0, zone Normal, R 58 Movable 6 8 8 8 8 8 8 8 6 7 120
Node 0, zone Normal, R 59 Movable 7 11 11 11 11 11 11 11 9 10 118
Node 0, zone Normal, R 60 Movable 3 4 5 5 5 5 5 5 5 5 123
Node 0, zone Normal, R 61 Movable 8 15 16 14 13 14 14 12 13 11 116
Node 0, zone Normal, R 62 Movable 7 10 11 11 11 11 11 11 11 11 117
Node 0, zone Normal, R 63 Movable 4 4 6 6 6 6 6 6 6 4 123
Node 0, zone Normal, R 64 Movable 9 12 14 14 14 14 14 14 12 13 115
Node 0, zone Normal, R 65 Movable 6 8 11 12 12 12 12 12 10 9 118
Node 0, zone Normal, R 66 Movable 20 22 22 16 19 19 15 17 13 11 115
Node 0, zone Normal, R 67 Movable 4 8 10 8 7 8 8 8 8 6 121
Node 0, zone Normal, R 68 Movable 13 20 22 23 23 24 18 19 20 18 109
Node 0, zone Normal, R 69 Movable 4 9 10 11 11 11 11 9 8 9 119
Node 0, zone Normal, R 70 Movable 9 14 16 16 16 16 14 15 13 12 115
Node 0, zone Normal, R 71 Movable 8 18 22 22 22 22 20 21 17 17 110
Node 0, zone Normal, R 72 Movable 4 5 8 8 8 8 8 8 8 8 120
Node 0, zone Normal, R 73 Movable 18 21 21 21 17 17 18 18 18 16 111
Node 0, zone Normal, R 74 Movable 4 8 10 10 10 10 10 10 10 8 119
Node 0, zone Normal, R 75 Movable 9 9 12 13 13 13 13 13 9 11 117
Node 0, zone Normal, R 76 Movable 12 16 16 14 13 14 14 14 8 9 118
Node 0, zone Normal, R 77 Movable 14 14 15 15 15 15 15 15 13 15 113
Node 0, zone Normal, R 78 Movable 8 10 14 14 14 14 14 14 12 12 116
Node 0, zone Normal, R 79 Movable 8 10 13 13 9 11 9 10 10 6 120
Node 0, zone Normal, R 80 Movable 11 14 15 16 16 16 16 16 12 14 114
Node 0, zone Normal, R 81 Movable 4 8 8 8 8 8 8 8 8 9 119
Node 0, zone Normal, R 82 Movable 17 23 24 24 22 23 19 21 21 12 112
Node 0, zone Normal, R 83 Movable 5 7 8 9 9 10 6 8 8 6 121
Node 0, zone Normal, R 84 Movable 17 22 25 25 23 24 24 20 16 19 109
Node 0, zone Normal, R 85 Movable 9 15 16 16 16 16 16 16 10 11 116
Node 0, zone Normal, R 86 Movable 3 8 8 8 8 8 6 7 5 6 122
Node 0, zone Normal, R 87 Movable 10 12 13 13 11 10 11 11 7 9 119
Node 0, zone Normal, R 88 Movable 15 20 17 15 15 16 16 14 9 12 116
Node 0, zone Normal, R 89 Movable 15 18 20 21 21 19 20 20 16 18 110
Node 0, zone Normal, R 90 Movable 8 16 15 14 15 15 13 14 12 13 115
Node 0, zone Normal, R 91 Movable 6 10 10 11 11 11 11 11 9 7 119
Node 0, zone Normal, R 92 Movable 14 15 17 17 17 17 17 17 15 13 114
Node 0, zone Normal, R 93 Movable 5 5 6 6 6 6 6 6 6 6 122
Node 0, zone Normal, R 94 Movable 15 27 25 26 26 26 26 26 20 19 107
Node 0, zone Normal, R 95 Movable 12 15 17 17 15 16 14 13 14 10 116
Node 0, zone Normal, R 96 Movable 10 15 16 16 16 16 16 14 15 15 113
Node 0, zone Normal, R 97 Movable 5 8 9 10 8 9 9 9 9 7 120
Node 0, zone Normal, R 98 Movable 8 11 11 11 11 11 11 9 10 10 118
Node 0, zone Normal, R 99 Movable 10 13 15 15 15 15 15 15 15 11 115
Node 0, zone Normal, R100 Movable 32 42 48 44 44 45 39 40 23 25 99
Node 0, zone Normal, R101 Movable 9 14 16 16 14 15 15 15 15 14 114
Node 0, zone Normal, R102 Movable 18 24 25 23 22 23 21 22 18 18 109
Node 0, zone Normal, R103 Movable 12 16 18 16 15 14 15 15 11 13 115
Node 0, zone Normal, R104 Movable 14 17 20 20 20 20 20 20 20 18 109
Node 0, zone Normal, R105 Movable 16 24 35 32 32 33 31 30 25 26 101
Node 0, zone Normal, R106 Movable 11 18 20 20 20 20 18 19 19 15 111
Node 0, zone Normal, R107 Movable 11 29 33 33 33 33 33 33 25 25 101
Node 0, zone Normal, R108 Movable 13 13 13 13 13 13 13 13 13 13 115
Node 0, zone Normal, R109 Movable 3 5 9 9 9 9 9 9 9 9 119
Node 0, zone Normal, R110 Movable 12 15 16 16 16 16 16 16 10 13 115
Node 0, zone Normal, R111 Movable 8 13 16 16 16 16 16 14 15 11 115
Node 0, zone Normal, R112 Movable 6 9 5 4 4 5 5 5 3 2 125
Node 0, zone Normal, R113 Movable 1 2 2 2 3 1 2 2 2 2 126
Node 0, zone Normal, R114 Movable 1 3 3 3 3 3 3 3 1 2 126
Node 0, zone Normal, R115 Movable 4 5 4 5 5 5 5 5 5 5 123
Node 0, zone Normal, R116 Movable 0 0 0 0 0 0 0 0 0 0 128
Node 0, zone Normal, R117 Movable 0 0 0 0 0 0 0 0 0 0 128
Node 0, zone Normal, R118 Movable 10 33 34 22 18 17 14 14 14 11 114
Node 0, zone Normal, R119 Movable 36 117 163 146 143 138 126 102 85 66 39
Node 0, zone Normal, R120 Movable 366 963 961 572 191 57 35 19 19 5 5
Node 0, zone Normal, R121 Movable 802 2065 2211 1260 425 128 45 14 7 0 0
Node 0, zone Normal, R122 Movable 123 328 322 160 37 6 1 0 0 0 0
Node 0, zone Normal, R123 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R124 Movable 0 0 0 0 0 0 0 0 0 0 0
Number of blocks type Unmovable Reclaimable Movable Reserve Isolate
Node 0, zone DMA 1 0 2 1 0
Node 0, zone DMA32 1 0 506 1 0
Node 0, zone Normal 227 38 15605 2 0
Node 0, zone DMA R 0 1 0 2 1 0
Node 0, zone DMA32 R 0 0 0 124 1 0
Node 0, zone DMA32 R 1 0 0 128 0 0
Node 0, zone DMA32 R 2 0 0 128 0 0
Node 0, zone DMA32 R 3 1 0 127 0 0
Node 0, zone DMA32 R 4 0 0 0 0 0
Node 0, zone DMA32 R 5 0 0 0 0 0
Node 0, zone DMA32 R 6 0 0 0 0 0
Node 0, zone DMA32 R 7 0 0 0 0 0
Node 0, zone Normal R 0 0 0 0 1 0
Node 0, zone Normal R 1 0 0 126 2 0
Node 0, zone Normal R 2 0 0 128 0 0
Node 0, zone Normal R 3 0 0 128 0 0
Node 0, zone Normal R 4 0 0 128 0 0
Node 0, zone Normal R 5 0 1 127 0 0
Node 0, zone Normal R 6 0 0 128 0 0
Node 0, zone Normal R 7 0 0 128 0 0
Node 0, zone Normal R 8 0 0 128 0 0
Node 0, zone Normal R 9 0 0 128 0 0
Node 0, zone Normal R 10 0 0 128 0 0
Node 0, zone Normal R 11 0 0 128 0 0
Node 0, zone Normal R 12 0 0 128 0 0
Node 0, zone Normal R 13 0 0 128 0 0
Node 0, zone Normal R 14 0 0 128 0 0
Node 0, zone Normal R 15 0 0 128 0 0
Node 0, zone Normal R 16 0 0 128 0 0
Node 0, zone Normal R 17 0 0 128 0 0
Node 0, zone Normal R 18 0 0 128 0 0
Node 0, zone Normal R 19 0 0 128 0 0
Node 0, zone Normal R 20 0 0 128 0 0
Node 0, zone Normal R 21 0 0 128 0 0
Node 0, zone Normal R 22 0 0 128 0 0
Node 0, zone Normal R 23 0 0 128 0 0
Node 0, zone Normal R 24 0 0 128 0 0
Node 0, zone Normal R 25 0 0 128 0 0
Node 0, zone Normal R 26 0 0 128 0 0
Node 0, zone Normal R 27 0 0 128 0 0
Node 0, zone Normal R 28 0 0 128 0 0
Node 0, zone Normal R 29 0 0 128 0 0
Node 0, zone Normal R 30 0 0 128 0 0
Node 0, zone Normal R 31 0 0 128 0 0
Node 0, zone Normal R 32 0 0 128 0 0
Node 0, zone Normal R 33 0 0 128 0 0
Node 0, zone Normal R 34 0 0 128 0 0
Node 0, zone Normal R 35 0 0 128 0 0
Node 0, zone Normal R 36 0 0 128 0 0
Node 0, zone Normal R 37 0 0 128 0 0
Node 0, zone Normal R 38 0 0 128 0 0
Node 0, zone Normal R 39 0 0 128 0 0
Node 0, zone Normal R 40 0 0 128 0 0
Node 0, zone Normal R 41 0 0 128 0 0
Node 0, zone Normal R 42 0 0 128 0 0
Node 0, zone Normal R 43 0 0 128 0 0
Node 0, zone Normal R 44 0 0 128 0 0
Node 0, zone Normal R 45 0 0 128 0 0
Node 0, zone Normal R 46 0 0 128 0 0
Node 0, zone Normal R 47 0 0 128 0 0
Node 0, zone Normal R 48 0 0 128 0 0
Node 0, zone Normal R 49 0 0 128 0 0
Node 0, zone Normal R 50 0 0 128 0 0
Node 0, zone Normal R 51 0 0 128 0 0
Node 0, zone Normal R 52 0 0 128 0 0
Node 0, zone Normal R 53 0 0 128 0 0
Node 0, zone Normal R 54 0 0 128 0 0
Node 0, zone Normal R 55 0 0 128 0 0
Node 0, zone Normal R 56 0 0 128 0 0
Node 0, zone Normal R 57 0 0 128 0 0
Node 0, zone Normal R 58 0 1 127 0 0
Node 0, zone Normal R 59 0 0 128 0 0
Node 0, zone Normal R 60 0 0 128 0 0
Node 0, zone Normal R 61 0 0 128 0 0
Node 0, zone Normal R 62 0 0 128 0 0
Node 0, zone Normal R 63 0 0 128 0 0
Node 0, zone Normal R 64 0 0 128 0 0
Node 0, zone Normal R 65 0 0 128 0 0
Node 0, zone Normal R 66 0 0 128 0 0
Node 0, zone Normal R 67 0 0 128 0 0
Node 0, zone Normal R 68 0 0 128 0 0
Node 0, zone Normal R 69 0 0 128 0 0
Node 0, zone Normal R 70 0 0 128 0 0
Node 0, zone Normal R 71 0 0 128 0 0
Node 0, zone Normal R 72 0 0 128 0 0
Node 0, zone Normal R 73 0 0 128 0 0
Node 0, zone Normal R 74 0 0 128 0 0
Node 0, zone Normal R 75 0 0 128 0 0
Node 0, zone Normal R 76 0 0 128 0 0
Node 0, zone Normal R 77 0 0 128 0 0
Node 0, zone Normal R 78 0 0 128 0 0
Node 0, zone Normal R 79 0 0 128 0 0
Node 0, zone Normal R 80 0 0 128 0 0
Node 0, zone Normal R 81 0 0 128 0 0
Node 0, zone Normal R 82 0 0 128 0 0
Node 0, zone Normal R 83 0 0 128 0 0
Node 0, zone Normal R 84 0 0 128 0 0
Node 0, zone Normal R 85 0 0 128 0 0
Node 0, zone Normal R 86 0 0 128 0 0
Node 0, zone Normal R 87 0 0 128 0 0
Node 0, zone Normal R 88 0 0 128 0 0
Node 0, zone Normal R 89 0 0 128 0 0
Node 0, zone Normal R 90 0 0 128 0 0
Node 0, zone Normal R 91 0 0 128 0 0
Node 0, zone Normal R 92 0 0 128 0 0
Node 0, zone Normal R 93 0 0 128 0 0
Node 0, zone Normal R 94 0 0 128 0 0
Node 0, zone Normal R 95 0 0 128 0 0
Node 0, zone Normal R 96 0 0 128 0 0
Node 0, zone Normal R 97 0 0 128 0 0
Node 0, zone Normal R 98 0 0 128 0 0
Node 0, zone Normal R 99 0 0 128 0 0
Node 0, zone Normal R100 0 0 128 0 0
Node 0, zone Normal R101 0 0 128 0 0
Node 0, zone Normal R102 0 0 128 0 0
Node 0, zone Normal R103 0 0 128 0 0
Node 0, zone Normal R104 0 0 128 0 0
Node 0, zone Normal R105 0 0 128 0 0
Node 0, zone Normal R106 0 0 128 0 0
Node 0, zone Normal R107 0 0 128 0 0
Node 0, zone Normal R108 0 0 128 0 0
Node 0, zone Normal R109 0 0 128 0 0
Node 0, zone Normal R110 0 0 128 0 0
Node 0, zone Normal R111 0 0 128 0 0
Node 0, zone Normal R112 0 0 128 0 0
Node 0, zone Normal R113 0 0 128 0 0
Node 0, zone Normal R114 0 0 128 0 0
Node 0, zone Normal R115 0 0 128 0 0
Node 0, zone Normal R116 0 0 128 0 0
Node 0, zone Normal R117 0 0 128 0 0
Node 0, zone Normal R118 0 1 127 0 0
Node 0, zone Normal R119 0 4 124 0 0
Node 0, zone Normal R120 62 18 48 0 0
Node 0, zone Normal R121 63 1 64 0 0
Node 0, zone Normal R122 102 12 14 0 0
Node 0, zone Normal R123 0 0 128 0 0
Node 0, zone Normal R124 0 0 128 0 0
Statistics with this patchset applied:
=====================================
Comparing these statistics with that of vanilla kernel, we see that the
fragmentation is significantly lesser, as seen in the MOVABLE migratetype.
Node 0, zone Normal
pages free 15731928
min 5575
low 6968
high 8362
scanned 0
spanned 16252928
present 16252928
managed 15989885
Per-region page stats present free
Region 0 1 1024
Region 1 131072 11137
Region 2 131072 83876
Region 3 131072 72134
Region 4 131072 116194
Region 5 131072 116393
Region 6 131072 130746
Region 7 131072 131040
Region 8 131072 131072
Region 9 131072 131072
Region 10 131072 131072
Region 11 131072 131035
Region 12 131072 131072
Region 13 131072 130112
Region 14 131072 131976
Region 15 131072 131061
Region 16 131072 131038
Region 17 131072 131045
Region 18 131072 131039
Region 19 131072 131029
Region 20 131072 131072
Region 21 131072 131051
Region 22 131072 131066
Region 23 131072 131070
Region 24 131072 131069
Region 25 131072 131032
Region 26 131072 131040
Region 27 131072 131072
Region 28 131072 131069
Region 29 131072 131056
Region 30 131072 131045
Region 31 131072 131070
Region 32 131072 131055
Region 33 131072 131053
Region 34 131072 131042
Region 35 131072 131065
Region 36 131072 130987
Region 37 131072 131072
Region 38 131072 131068
Region 39 131072 131014
Region 40 131072 131044
Region 41 131072 131067
Region 42 131072 131071
Region 43 131072 131045
Region 44 131072 131072
Region 45 131072 131068
Region 46 131072 131038
Region 47 131072 131069
Region 48 131072 131072
Region 49 131072 131070
Region 50 131072 131054
Region 51 131072 131064
Region 52 131072 131072
Region 53 131072 131042
Region 54 131072 131041
Region 55 131072 131072
Region 56 131072 131066
Region 57 131072 131072
Region 58 131072 131072
Region 59 131072 131068
Region 60 131072 131057
Region 61 131072 131072
Region 62 131072 131041
Region 63 131072 131046
Region 64 131072 131053
Region 65 131072 131072
Region 66 131072 131072
Region 67 131072 131072
Region 68 131072 131067
Region 69 131072 131041
Region 70 131072 131071
Region 71 131072 131052
Region 72 131072 131071
Region 73 131072 131072
Region 74 131072 131066
Region 75 131072 131072
Region 76 131072 131072
Region 77 131072 131065
Region 78 131072 131067
Region 79 131072 131072
Region 80 131072 131071
Region 81 131072 131056
Region 82 131072 131072
Region 83 131072 131072
Region 84 131072 131072
Region 85 131072 131072
Region 86 131072 131062
Region 87 131072 131072
Region 88 131072 131067
Region 89 131072 131057
Region 90 131072 131072
Region 91 131072 131026
Region 92 131072 131072
Region 93 131072 131067
Region 94 131072 131057
Region 95 131072 131072
Region 96 131072 131072
Region 97 131072 131072
Region 98 131072 131072
Region 99 131072 131037
Region 100 131072 131072
Region 101 131072 131072
Region 102 131072 131071
Region 103 131072 131072
Region 104 131072 131072
Region 105 131072 131072
Region 106 131072 131072
Region 107 131072 131072
Region 108 131072 131072
Region 109 131072 131072
Region 110 131072 131072
Region 111 131072 131056
Region 112 131072 131072
Region 113 131072 131072
Region 114 131072 131072
Region 115 131072 131072
Region 116 131072 131072
Region 117 131072 131072
Region 118 131072 131072
Region 119 131072 131072
Region 120 131072 131072
Region 121 131072 131072
Region 122 131072 128263
Region 123 131072 0
Region 124 131071 53
Page block order: 10
Pages per block: 1024
Free pages count per migrate type at order 0 1 2 3 4 5 6 7 8 9 10
Node 0, zone DMA, type Unmovable 1 2 2 1 3 2 0 0 1 1 0
Node 0, zone DMA, type Reclaimable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone DMA, type Movable 0 0 0 0 0 0 0 0 0 0 2
Node 0, zone DMA, type Reserve 0 0 0 0 0 0 0 0 0 0 1
Node 0, zone DMA, type Isolate 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone DMA32, type Unmovable 0 1 0 0 0 0 1 1 1 1 127
Node 0, zone DMA32, type Reclaimable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone DMA32, type Movable 9 10 12 8 10 8 8 6 5 7 309
Node 0, zone DMA32, type Reserve 0 0 0 0 0 0 0 0 0 0 1
Node 0, zone DMA32, type Isolate 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, type Unmovable 10879 9467 6585 2559 1859 630 81 7 1 2 108
Node 0, zone Normal, type Reclaimable 1 1 1 1 0 1 0 1 0 0 81
Node 0, zone Normal, type Movable 690 3282 4967 2628 1209 810 677 554 468 375 8006
Node 0, zone Normal, type Reserve 0 0 0 0 0 0 0 0 0 0 2
Node 0, zone Normal, type Isolate 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 0 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 1 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 2 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 3 Movable 50 2600 4277 1986 588 193 90 42 18 1 1
Node 0, zone Normal, R 4 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 5 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 6 Movable 52 65 71 57 60 57 51 45 39 29 91
Node 0, zone Normal, R 7 Movable 2 1 3 2 2 1 2 2 2 2 126
Node 0, zone Normal, R 8 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 9 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 10 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 11 Movable 5 7 8 5 6 7 7 3 3 4 124
Node 0, zone Normal, R 12 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 13 Movable 0 0 0 0 0 0 1 0 0 0 127
Node 0, zone Normal, R 14 Movable 24 26 29 29 26 28 27 28 24 18 107
Node 0, zone Normal, R 15 Movable 9 10 10 8 7 6 7 7 7 7 121
Node 0, zone Normal, R 16 Movable 8 13 15 16 14 13 14 14 14 10 116
Node 0, zone Normal, R 17 Movable 11 17 14 14 15 15 15 13 12 13 115
Node 0, zone Normal, R 18 Movable 9 7 8 5 4 6 6 4 3 4 124
Node 0, zone Normal, R 19 Movable 9 8 9 9 11 11 9 10 8 7 120
Node 0, zone Normal, R 20 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 21 Movable 13 9 11 10 11 9 10 10 10 8 119
Node 0, zone Normal, R 22 Movable 6 6 6 6 6 6 6 6 6 6 122
Node 0, zone Normal, R 23 Movable 2 2 2 2 2 2 2 2 2 2 126
Node 0, zone Normal, R 24 Movable 3 3 3 3 3 3 3 3 3 3 125
Node 0, zone Normal, R 25 Movable 10 11 14 12 12 13 11 12 8 6 120
Node 0, zone Normal, R 26 Movable 12 10 16 16 16 16 16 16 16 14 113
Node 0, zone Normal, R 27 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 28 Movable 1 0 1 1 1 1 1 1 1 1 127
Node 0, zone Normal, R 29 Movable 0 0 0 2 2 2 2 2 2 2 126
Node 0, zone Normal, R 30 Movable 1 2 2 3 2 1 2 2 2 0 127
Node 0, zone Normal, R 31 Movable 2 2 2 2 2 2 2 2 2 2 126
Node 0, zone Normal, R 32 Movable 1 3 2 2 1 2 2 2 2 2 126
Node 0, zone Normal, R 33 Movable 3 3 3 3 4 4 4 4 4 4 124
Node 0, zone Normal, R 34 Movable 2 2 1 3 2 3 1 2 2 2 126
Node 0, zone Normal, R 35 Movable 3 3 4 4 4 4 4 4 4 4 124
Node 0, zone Normal, R 36 Movable 3 32 32 35 35 35 35 33 32 23 100
Node 0, zone Normal, R 37 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 38 Movable 2 1 2 0 1 1 1 1 1 1 127
Node 0, zone Normal, R 39 Movable 4 3 3 2 4 3 2 3 3 1 126
Node 0, zone Normal, R 40 Movable 0 4 7 8 8 8 8 8 4 6 122
Node 0, zone Normal, R 41 Movable 1 1 2 2 2 2 2 2 2 2 126
Node 0, zone Normal, R 42 Movable 1 1 1 1 1 1 1 1 1 1 127
Node 0, zone Normal, R 43 Movable 3 13 12 11 12 12 12 12 10 7 119
Node 0, zone Normal, R 44 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 45 Movable 4 4 4 4 4 4 4 4 2 3 125
Node 0, zone Normal, R 46 Movable 8 13 15 16 16 16 16 16 14 15 113
Node 0, zone Normal, R 47 Movable 1 2 2 2 2 2 2 2 2 2 126
Node 0, zone Normal, R 48 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 49 Movable 2 2 2 2 2 2 2 2 2 2 126
Node 0, zone Normal, R 50 Movable 2 2 6 6 6 6 6 6 6 6 122
Node 0, zone Normal, R 51 Movable 2 1 1 0 1 1 1 1 1 1 127
Node 0, zone Normal, R 52 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 53 Movable 4 3 4 7 5 6 6 6 4 5 123
Node 0, zone Normal, R 54 Movable 3 3 4 1 2 3 3 3 3 3 125
Node 0, zone Normal, R 55 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 56 Movable 6 6 4 5 5 5 5 3 4 4 124
Node 0, zone Normal, R 57 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 58 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 59 Movable 0 0 1 1 1 1 1 1 1 1 127
Node 0, zone Normal, R 60 Movable 1 8 8 8 8 8 8 8 8 8 120
Node 0, zone Normal, R 61 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 62 Movable 1 0 0 0 2 2 2 2 0 1 127
Node 0, zone Normal, R 63 Movable 2 14 14 14 14 14 14 14 14 14 114
Node 0, zone Normal, R 64 Movable 5 12 12 10 11 11 11 9 10 8 119
Node 0, zone Normal, R 65 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 66 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 67 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 68 Movable 1 1 0 1 1 1 1 1 1 1 127
Node 0, zone Normal, R 69 Movable 3 3 4 5 2 4 4 4 4 2 125
Node 0, zone Normal, R 70 Movable 1 1 1 1 1 1 1 1 1 1 127
Node 0, zone Normal, R 71 Movable 0 2 6 6 6 6 6 6 6 6 122
Node 0, zone Normal, R 72 Movable 1 1 1 1 1 1 1 1 1 1 127
Node 0, zone Normal, R 73 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 74 Movable 2 2 1 2 2 2 2 2 2 2 126
Node 0, zone Normal, R 75 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 76 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 77 Movable 3 3 4 4 4 4 4 4 4 4 124
Node 0, zone Normal, R 78 Movable 1 1 0 1 1 1 1 1 1 1 127
Node 0, zone Normal, R 79 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 80 Movable 1 1 1 1 1 1 1 1 1 1 127
Node 0, zone Normal, R 81 Movable 16 16 16 16 16 16 16 16 16 16 112
Node 0, zone Normal, R 82 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 83 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 84 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 85 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 86 Movable 2 2 0 2 2 2 2 2 2 0 127
Node 0, zone Normal, R 87 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 88 Movable 1 1 2 0 1 1 1 1 1 1 127
Node 0, zone Normal, R 89 Movable 1 0 0 2 0 1 1 1 1 1 127
Node 0, zone Normal, R 90 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 91 Movable 2 6 5 4 5 6 6 4 5 5 123
Node 0, zone Normal, R 92 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 93 Movable 1 1 0 1 1 1 1 1 1 1 127
Node 0, zone Normal, R 94 Movable 1 2 1 1 2 2 2 0 1 1 127
Node 0, zone Normal, R 95 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 96 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 97 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 98 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R 99 Movable 5 4 4 4 4 5 5 5 5 5 123
Node 0, zone Normal, R100 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R101 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R102 Movable 1 1 1 1 1 1 1 1 1 1 127
Node 0, zone Normal, R103 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R104 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R105 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R106 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R107 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R108 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R109 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R110 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R111 Movable 2 1 1 1 2 2 2 2 2 0 127
Node 0, zone Normal, R112 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R113 Movable 0 0 0 0 0 0 0 0 0 0 128
Node 0, zone Normal, R114 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R115 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R116 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R117 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R118 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R119 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R120 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R121 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R122 Movable 351 298 271 239 212 203 182 127 94 60 31
Node 0, zone Normal, R123 Movable 0 0 0 0 0 0 0 0 0 0 0
Node 0, zone Normal, R124 Movable 1 0 1 0 1 1 0 0 0 0 0
Number of blocks type Unmovable Reclaimable Movable Reserve Isolate
Node 0, zone DMA 1 0 2 1 0
Node 0, zone DMA32 128 0 379 1 0
Node 0, zone Normal 384 128 15359 1 0
Node 0, zone Normal R 0 0 0 0 1 0
Node 0, zone Normal R 1 127 0 0 1 0
Node 0, zone Normal R 2 1 127 0 0 0
Node 0, zone Normal R 3 0 1 127 0 0
Node 0, zone Normal R 4 127 0 1 0 0
Node 0, zone Normal R 5 128 0 0 0 0
Node 0, zone Normal R 6 1 0 127 0 0
Node 0, zone Normal R 7 0 0 128 0 0
Node 0, zone Normal R 8 0 0 128 0 0
Node 0, zone Normal R 9 0 0 128 0 0
Node 0, zone Normal R 10 0 0 128 0 0
Node 0, zone Normal R 11 0 0 128 0 0
Node 0, zone Normal R 12 0 0 128 0 0
Node 0, zone Normal R 13 0 0 128 0 0
Node 0, zone Normal R 14 0 0 128 0 0
Node 0, zone Normal R 15 0 0 128 0 0
Node 0, zone Normal R 16 0 0 128 0 0
Node 0, zone Normal R 17 0 0 128 0 0
Node 0, zone Normal R 18 0 0 128 0 0
Node 0, zone Normal R 19 0 0 128 0 0
Node 0, zone Normal R 20 0 0 128 0 0
Node 0, zone Normal R 21 0 0 128 0 0
Node 0, zone Normal R 22 0 0 128 0 0
Node 0, zone Normal R 23 0 0 128 0 0
Node 0, zone Normal R 24 0 0 128 0 0
Node 0, zone Normal R 25 0 0 128 0 0
Node 0, zone Normal R 26 0 0 128 0 0
Node 0, zone Normal R 27 0 0 128 0 0
Node 0, zone Normal R 28 0 0 128 0 0
Node 0, zone Normal R 29 0 0 128 0 0
Node 0, zone Normal R 30 0 0 128 0 0
Node 0, zone Normal R 31 0 0 128 0 0
Node 0, zone Normal R 32 0 0 128 0 0
Node 0, zone Normal R 33 0 0 128 0 0
Node 0, zone Normal R 34 0 0 128 0 0
Node 0, zone Normal R 35 0 0 128 0 0
Node 0, zone Normal R 36 0 0 128 0 0
Node 0, zone Normal R 37 0 0 128 0 0
Node 0, zone Normal R 38 0 0 128 0 0
Node 0, zone Normal R 39 0 0 128 0 0
Node 0, zone Normal R 40 0 0 128 0 0
Node 0, zone Normal R 41 0 0 128 0 0
Node 0, zone Normal R 42 0 0 128 0 0
Node 0, zone Normal R 43 0 0 128 0 0
Node 0, zone Normal R 44 0 0 128 0 0
Node 0, zone Normal R 45 0 0 128 0 0
Node 0, zone Normal R 46 0 0 128 0 0
Node 0, zone Normal R 47 0 0 128 0 0
Node 0, zone Normal R 48 0 0 128 0 0
Node 0, zone Normal R 49 0 0 128 0 0
Node 0, zone Normal R 50 0 0 128 0 0
Node 0, zone Normal R 51 0 0 128 0 0
Node 0, zone Normal R 52 0 0 128 0 0
Node 0, zone Normal R 53 0 0 128 0 0
Node 0, zone Normal R 54 0 0 128 0 0
Node 0, zone Normal R 55 0 0 128 0 0
Node 0, zone Normal R 56 0 0 128 0 0
Node 0, zone Normal R 57 0 0 128 0 0
Node 0, zone Normal R 58 0 0 128 0 0
Node 0, zone Normal R 59 0 0 128 0 0
Node 0, zone Normal R 60 0 0 128 0 0
Node 0, zone Normal R 61 0 0 128 0 0
Node 0, zone Normal R 62 0 0 128 0 0
Node 0, zone Normal R 63 0 0 128 0 0
Node 0, zone Normal R 64 0 0 128 0 0
Node 0, zone Normal R 65 0 0 128 0 0
Node 0, zone Normal R 66 0 0 128 0 0
Node 0, zone Normal R 67 0 0 128 0 0
Node 0, zone Normal R 68 0 0 128 0 0
Node 0, zone Normal R 69 0 0 128 0 0
Node 0, zone Normal R 70 0 0 128 0 0
Node 0, zone Normal R 71 0 0 128 0 0
Node 0, zone Normal R 72 0 0 128 0 0
Node 0, zone Normal R 73 0 0 128 0 0
Node 0, zone Normal R 74 0 0 128 0 0
Node 0, zone Normal R 75 0 0 128 0 0
Node 0, zone Normal R 76 0 0 128 0 0
Node 0, zone Normal R 77 0 0 128 0 0
Node 0, zone Normal R 78 0 0 128 0 0
Node 0, zone Normal R 79 0 0 128 0 0
Node 0, zone Normal R 80 0 0 128 0 0
Node 0, zone Normal R 81 0 0 128 0 0
Node 0, zone Normal R 82 0 0 128 0 0
Node 0, zone Normal R 83 0 0 128 0 0
Node 0, zone Normal R 84 0 0 128 0 0
Node 0, zone Normal R 85 0 0 128 0 0
Node 0, zone Normal R 86 0 0 128 0 0
Node 0, zone Normal R 87 0 0 128 0 0
Node 0, zone Normal R 88 0 0 128 0 0
Node 0, zone Normal R 89 0 0 128 0 0
Node 0, zone Normal R 90 0 0 128 0 0
Node 0, zone Normal R 91 0 0 128 0 0
Node 0, zone Normal R 92 0 0 128 0 0
Node 0, zone Normal R 93 0 0 128 0 0
Node 0, zone Normal R 94 0 0 128 0 0
Node 0, zone Normal R 95 0 0 128 0 0
Node 0, zone Normal R 96 0 0 128 0 0
Node 0, zone Normal R 97 0 0 128 0 0
Node 0, zone Normal R 98 0 0 128 0 0
Node 0, zone Normal R 99 0 0 128 0 0
Node 0, zone Normal R100 0 0 128 0 0
Node 0, zone Normal R101 0 0 128 0 0
Node 0, zone Normal R102 0 0 128 0 0
Node 0, zone Normal R103 0 0 128 0 0
Node 0, zone Normal R104 0 0 128 0 0
Node 0, zone Normal R105 0 0 128 0 0
Node 0, zone Normal R106 0 0 128 0 0
Node 0, zone Normal R107 0 0 128 0 0
Node 0, zone Normal R108 0 0 128 0 0
Node 0, zone Normal R109 0 0 128 0 0
Node 0, zone Normal R110 0 0 128 0 0
Node 0, zone Normal R111 0 0 128 0 0
Node 0, zone Normal R112 0 0 128 0 0
Node 0, zone Normal R113 0 0 128 0 0
Node 0, zone Normal R114 0 0 128 0 0
Node 0, zone Normal R115 0 0 128 0 0
Node 0, zone Normal R116 0 0 128 0 0
Node 0, zone Normal R117 0 0 128 0 0
Node 0, zone Normal R118 0 0 128 0 0
Node 0, zone Normal R119 0 0 128 0 0
Node 0, zone Normal R120 0 0 128 0 0
Node 0, zone Normal R121 0 0 128 0 0
Node 0, zone Normal R122 0 0 128 0 0
Node 0, zone Normal R123 0 0 128 0 0
Node 0, zone Normal R124 0 0 128 0 0
Performance impact:
------------------
Kernbench was run with and without the patchset. It shows an overhead of
around 7.8% with the patchset applied.
Vanilla kernel:
Average Optimal load -j 32 Run (std deviation):
Elapsed Time 706.760000
User Time 4536.670000
System Time 1526.610000
Percent CPU 857.000000
Context Switches 2229643.000000
Sleeps 2211767.000000
With patchset:
Average Optimal load -j 32 Run (std deviation):
Elapsed Time 761.010000
User Time 4605.450000
System Time 1535.870000
Percent CPU 806.000000
Context Switches 2247690.000000
Sleeps 2213503.000000
This version (v3) of the patchset focussed more on improving the consolidation
ratio and less on the performance impact. There is plenty of room for
performance optimization, and I'll work on that in future versions.
Regards,
Srivatsa S. Bhat
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