hi,
- big and ugly mail. If you don't like them, delete it now :-) -
I have collected and classified some information of:
http://home.earthlink.net/~rwhron/kernel/bigbox.html
And I observed that ext3 performance is worse than previous
kernels(2.4.19...). -ac and -aa are here only as reference.
Complete information is in the upper URL.
dbench: Performance is worse.
dbench (Numbers are in MB/second, so bigger is better)
=====
dbench-1.3 ext3 192 processes Average +/- MB/sec
2.4.20-rc1aa1 79.3 5.3
2.4.19 61.1 1.1
2.4.21-pre4-ac3 60.1 1.7
2.4.20-rc1 60.6 3.2
2.4.21-rc6-ac1 49.9 7.5
2.4.23-rc1 45.4 0.8
2.4.22aa1 40.3 11.2
2.4.18 27.0 0.3
dbench-1.3 ext3 64 processes Averag +/- MB/sec
2.4.20-rc1aa1 102.6 16.0
2.4.21-rc6-ac1 86.1 14.5
2.4.21-pre4-ac3 84.9 14.6
2.4.19 83.6 12.8
2.4.20-rc1 81.3 12.4
2.4.22aa1 75.2 4.8
2.4.23-rc1 72.6 6.2
2.4.18 64.2 3.7
- tbench: Performance is worse than previous kernels, but not too much.
tbench (Numbers are in MB/second, so bigger is better)
=====
tbench-1.3 192 processes Average +/- MB/sec
2.4.22aa1 136.8 1.9
2.4.20-rc1aa1 105.4 3.4
2.4.21-rc6-ac1 103.4 2.8
2.4.21-pre4-ac3 101.7 2.1
2.4.18 29.8 0.1
2.4.19 29.6 0.1
2.4.20-rc1 28.1 0.2
2.4.23-rc1 26.4 0.3
tbench-1.3 64 processes Average +/- MB/sec
2.4.22aa1 135.2 5.4
2.4.20-rc1aa1 109.9 3.2
2.4.21-rc6-ac1 105.1 3.1
2.4.21-pre4-ac3 104.7 2.3
2.4.18 101.8 1.8
2.4.19 100.2 2.6
2.4.20-rc1 96.5 2.8
2.4.23-rc1 94.8 2.4
- tiobench(ext3):
In 'Sequential Reads' and 'Sequential Writes', 'Maximum
Latency' is _too much high_
tiobench
=======
Sequential Reads ext3
File Blk Num Avg
Maximum Lat% Lat% CPU
Kernel Size Size Thr Rate (CPU%) Latency
Latency &2s &10s Eff
---------------------------- ------ ----- ---
------------------------------------------------------------
2.4.20-pre10 8192 4096 1 37.28 21.64% 0.312
135.50 0.00000 0.00000 172
2.4.20-pre8 8192 4096 1 37.34 21.38% 0.311
133.76 0.00000 0.00000 175
2.4.20-rc1 8192 4096 1 37.36 21.44% 0.311
421.18 0.00000 0.00000 174
2.4.21-pre4-ac3 8192 4096 1 30.50 16.92% 0.382
549.18 0.00000 0.00000 180
2.4.21-pre4aa1 8192 4096 1 50.38 28.03% 0.230
529.88 0.00000 0.00000 180
2.4.21-rc6-ac1 8192 4096 1 31.17 17.28% 0.373
856.73 0.00000 0.00000 180
2.4.22-pre7aa1 8192 4096 1 49.77 28.51% 0.233
660.13 0.00000 0.00000 175
2.4.22aa1 8192 4096 1 50.60 28.60% 0.229
791.48 0.00000 0.00000 177
2.4.23-pre4 8192 4096 1 27.65 14.80% 0.421
761.52 0.00000 0.00000 187
2.4.23-rc1 8192 4096 1 27.54 14.89% 0.423
731.87 0.00000 0.00000 185
2.4.20-pre10 8192 4096 256 7.20 4.92% 358.227
46127.19 5.62634 0.02361 146
2.4.20-pre8 8192 4096 256 7.42 5.07% 343.312
43765.93 5.46589 0.02732 146
2.4.20-rc1 8192 4096 256 7.14 4.87% 360.645
43486.21 5.66969 0.02255 147
2.4.21-pre4-ac3 8192 4096 256 7.08 4.56% 335.749
43307.31 5.60594 0.01083 155
2.4.21-pre4aa1 8192 4096 256 8.09 9.48% 204.764
696991.89 0.59543 0.44203 85
2.4.21-rc6-ac1 8192 4096 256 7.86 16.80% 292.629
939153.21 0.77891 0.54994 47
2.4.22-pre7aa1 8192 4096 256 7.04 16.77% 418.784
84440.45 2.40402 2.22159 42
2.4.22aa1 8192 4096 256 6.69 14.81% 443.855
63577.04 2.40921 2.29164 45
2.4.23-pre4 8192 4096 256 5.10 6.83% 430.551
1602091.53 0.35501 0.31585 75
2.4.23-rc1 8192 4096 256 5.04 6.94% 432.486
1937701.66 0.33408 0.29884 73
Random Reads ext3
File Blk Num Avg
Maximum Lat% Lat% CPU
Kernel Size Size Thr Rate (CPU%) Latency
Latency &2s &10s Eff
---------------------------- ------ ----- ---
------------------------------------------------------------
2.4.20-pre10 8192 4096 1 0.95 0.81% 12.341
75.99 0.00000 0.00000 117
2.4.20-pre8 8192 4096 1 0.96 1.23% 12.185
62.69 0.00000 0.00000 78
2.4.20-rc1 8192 4096 1 0.96 0.96% 12.176
46.93 0.00000 0.00000 100
2.4.21-pre4-ac3 8192 4096 1 0.91 1.09% 12.859
112.29 0.00000 0.00000 84
2.4.21-pre4aa1 8192 4096 1 0.91 0.93% 12.879
116.53 0.00000 0.00000 98
2.4.21-rc6-ac1 8192 4096 1 0.95 0.81% 12.295
41.46 0.00000 0.00000 117
2.4.22-pre7aa1 8192 4096 1 0.90 0.98% 13.014
335.35 0.00000 0.00000 92
2.4.22aa1 8192 4096 1 0.92 1.01% 12.797
111.10 0.00000 0.00000 90
2.4.23-pre4 8192 4096 1 0.91 0.88% 12.817
99.40 0.00000 0.00000 104
2.4.23-rc1 8192 4096 1 0.89 0.82% 13.118
123.33 0.00000 0.00000 109
2.4.20-pre10 8192 4096 256 2.33 4.40% 661.619
18451.11 12.91666 0.00000 53
2.4.20-pre8 8192 4096 256 2.35 3.34% 678.482
18276.93 12.99479 0.00000 70
2.4.20-rc1 8192 4096 256 2.32 2.67% 672.370
18505.69 12.81250 0.00000 87
2.4.21-pre4-ac3 8192 4096 256 2.35 2.40% 668.279
18366.33 12.99479 0.00000 98
2.4.21-pre4aa1 8192 4096 256 3.31 5.30% 485.616
10704.34 5.72916 0.00000 62
2.4.21-rc6-ac1 8192 4096 256 2.26 4.72% 700.081
18934.72 12.78646 0.00000 48
2.4.22-pre7aa1 8192 4096 256 3.38 6.16% 671.347
8870.86 5.20833 0.00000 55
2.4.22aa1 8192 4096 256 3.22 11.08% 785.687
1793.92 0.00000 0.00000 29
2.4.23-pre4 8192 4096 256 2.20 4.49% 839.345
5697.90 0.00000 0.00000 49
2.4.23-rc1 8192 4096 256 2.28 4.10% 878.192
2519.29 0.00000 0.00000 56
Sequential Writes ext3
File Blk Num Avg
Maximum Lat% Lat% CPU
Kernel Size Size Thr Rate (CPU%) Latency
Latency &2s &10s Eff
---------------------------- ------ ----- ---
------------------------------------------------------------
2.4.20-pre10 8192 4096 1 37.71 56.08% 0.288
4315.58 0.00000 0.00000 67
2.4.20-pre8 8192 4096 1 37.80 53.97% 0.287
4157.16 0.00000 0.00000 70
2.4.20-rc1 8192 4096 1 37.68 55.47% 0.288
4225.93 0.00000 0.00000 68
2.4.21-pre4-ac3 8192 4096 1 37.36 46.88% 0.290
3403.73 0.00000 0.00000 80
2.4.21-pre4aa1 8192 4096 1 40.48 49.75% 0.251
909.26 0.00000 0.00000 81
2.4.21-rc6-ac1 8192 4096 1 34.55 42.89% 0.326
15687.97 0.00397 0.00000 81
2.4.22-pre7aa1 8192 4096 1 43.37 56.97% 0.235
3174.53 0.00005 0.00000 76
2.4.22aa1 8192 4096 1 44.25 57.99% 0.230
718.76 0.00000 0.00000 76
2.4.23-pre4 8192 4096 1 41.66 57.58% 0.264
1032.96 0.00000 0.00000 72
2.4.23-rc1 8192 4096 1 39.69 54.68% 0.278
730.02 0.00000 0.00000 73
2.4.20-pre10 8192 4096 256 9.94 71.13% 134.323
61604.97 2.87437 0.03022 14
2.4.20-pre8 8192 4096 256 9.88 75.43% 133.434
62461.37 2.83661 0.03186 13
2.4.20-rc1 8192 4096 256 9.97 73.84% 133.300
65690.42 2.93164 0.02885 14
2.4.21-pre4-ac3 8192 4096 256 9.22 44.18% 134.944
36902.34 2.99883 0.00290 21
2.4.21-pre4aa1 8192 4096 256 7.38 41.41% 168.063
151496.74 2.74157 0.28987 18
2.4.21-rc6-ac1 8192 4096 256 4.96 25.59% 284.662
387169.56 2.23074 0.83136 19
2.4.22-pre7aa1 8192 4096 256 8.66 49.63% 142.657
83844.75 2.59070 0.11811 17
2.4.22aa1 8192 4096 256 12.57 65.96% 117.692
29694.33 1.48821 0.00000 19
2.4.23-pre4 8192 4096 256 9.46 53.32% 150.534
172363.64 2.09446 0.27799 18
2.4.23-rc1 8192 4096 256 9.09 50.56% 160.462
161442.23 2.30537 0.28430 18
Random Writes ext3
File Blk Num Avg
Maximum Lat% Lat% CPU
Kernel Size Size Thr Rate (CPU%) Latency
Latency &2s &10s Eff
---------------------------- ------ ----- ---
------------------------------------------------------------
2.4.20-pre10 8192 4096 1 3.72 3.81% 0.080
0.68 0.00000 0.00000 98
2.4.20-pre8 8192 4096 1 3.71 3.25% 0.079
0.70 0.00000 0.00000 114
2.4.20-rc1 8192 4096 1 3.72 3.81% 0.080
0.71 0.00000 0.00000 98
2.4.21-pre4-ac3 8192 4096 1 3.72 3.33% 0.082
0.62 0.00000 0.00000 112
2.4.21-pre4aa1 8192 4096 1 4.49 4.98% 0.067
0.68 0.00000 0.00000 90
2.4.21-rc6-ac1 8192 4096 1 3.85 3.69% 0.082
0.64 0.00000 0.00000 104
2.4.22-pre7aa1 8192 4096 1 4.60 5.11% 0.082
1.20 0.00000 0.00000 90
2.4.22aa1 8192 4096 1 4.61 5.81% 0.083
1.08 0.00000 0.00000 79
2.4.23-pre4 8192 4096 1 3.94 5.05% 0.086
0.64 0.00000 0.00000 78
2.4.23-rc1 8192 4096 1 3.94 5.04% 0.087
0.62 0.00000 0.00000 78
2.4.20-pre10 8192 4096 256 3.63 10.31% 0.482
273.57 0.00000 0.00000 35
2.4.20-pre8 8192 4096 256 3.62 13.36% 0.599
372.91 0.00000 0.00000 27
2.4.20-rc1 8192 4096 256 3.62 10.86% 0.478
247.68 0.00000 0.00000 33
2.4.21-pre4-ac3 8192 4096 256 3.62 10.94% 0.255
3.48 0.00000 0.00000 33
2.4.21-pre4aa1 8192 4096 256 4.39 30.16% 0.199
6.97 0.00000 0.00000 15
2.4.21-rc6-ac1 8192 4096 256 3.68 17.09% 0.260
1.39 0.00000 0.00000 22
2.4.22-pre7aa1 8192 4096 256 4.45 31.24% 0.241
7.13 0.00000 0.00000 14
2.4.22aa1 8192 4096 256 4.44 21.90% 0.247
7.29 0.00000 0.00000 20
2.4.23-pre4 8192 4096 256 3.83 29.77% 0.248
55.60 0.00000 0.00000 13
2.4.23-rc1 8192 4096 256 3.77 29.99% 0.256
59.45 0.00000 0.00000 13
- bonnie++-1.02c(ext3): Performance is a little worse than previous kernels.
bonnie++-1.02c on ext3
============= --------------------- Sequential Output
------------------ -------- Sequential Input ---------- ----- Random -----
---- Per Char ----- ------ Block ----- ---- Rewrite ----
---- Per Char --- ----- Block ----- ----- Seeks -----
Kernel Size MB/sec %CPU Eff MB/sec %CPU Eff MB/sec %CPU Eff
MB/sec %CPU Eff MB/sec %CPU Eff /sec %CPU Eff
2.4.18 8192 9.03 99.0 9.12 28.65 38.3 75 18.35 25.0 73
9.13 96.3 9.5 30.40 18.0 169 383.9 2.67 14396
2.4.19 8192 8.97 98.0 9.15 41.43 51.3 81 19.94 21.0 95
9.15 97.0 9.4 30.85 18.3 168 385.9 2.33 16540
2.4.20-rc1 8192 8.85 97.0 9.12 41.20 52.3 79 19.78 21.0 94
9.16 97.0 9.4 30.71 18.3 167 617.7 5.00 12355
2.4.21-rc6-ac1 8192 7.92 87.0 9.10 43.34 47.0 92 17.38 17.0 102
9.38 99.0 9.5 31.04 14.0 222 604.0 2.67 22650
2.4.21-pre4-ac3 8192 8.85 97.0 9.13 41.51 45.3 92 17.02 16.0 106
9.37 99.0 9.5 31.41 14.7 214 614.5 3.00 20482
2.4.22aa1 8192 8.92 95.0 9.39 51.80 57.7 90 22.52 23.7 95
8.82 91.0 9.7 51.78 26.3 197 560.9 3.00 18698
2.4.23-rc1 8192 8.95 97.0 9.23 42.71 50.7 84 15.09 14.0 108
7.64 78.7 9.7 28.63 13.0 220 579.1 2.33 24819
----------------------Sequential---------------------
------------------------ Random -----------------------
----- Create ----- ----- Read ----- ----Delete ----
----- Create ---- ----- Read ----- ---- Delete ----
files /sec %CPU Eff /sec %CPU Eff /sec %CPU Eff
/sec %CPU Eff /sec %CPU Eff /sec %CPU Eff
2.4.18 65536 127 99.0 128 na na na 29074 97.0 2997
127 99.0 128 na na na 488 96.0 508
2.4.19 65536 126 99.0 127 na na na 30095 96.7 3113
129 99.0 130 na na na 490 96.0 511
2.4.20-rc1 65536 124 99.0 125 na na na 28556 99.7 2865
130 99.0 131 na na na 483 96.0 503
2.4.21-rc6-ac1 65536 121 94.7 128 na na na 26040 94.7 2750
121 95.0 128 na na na 450 89.3 504
2.4.21-pre4-ac3 65536 129 99.0 130 na na na 27719 97.7 2838
127 99.0 129 na na na 475 96.0 494
2.4.22aa1 65536 119 94.7 125 na na na 27655 95.0 2911
123 95.0 129 na na na 443 90.7 488
2.4.23-rc1 65536 124 94.7 131 na na na 26297 100.0 2629
121 95.0 128 na na na 442 89.0 497
is there any reasonable explication ?
-thanks-
hi,
- big and ugly mail. If you don't like them, delete it now :-) -
I have collected and classified some information of:
http://home.earthlink.net/~rwhron/kernel/bigbox.html
And I observed that ext3 performance is worse than previous
kernels(2.4.19...). -ac and -aa are here only as reference.
Complete information is in the upper URL.
dbench: Performance is worse.
dbench (Numbers are in MB/second, so bigger is better)
=====
dbench-1.3 ext3 192 processes Average +/- MB/sec
2.4.20-rc1aa1 79.3 5.3
2.4.19 61.1 1.1
2.4.21-pre4-ac3 60.1 1.7
2.4.20-rc1 60.6 3.2
2.4.21-rc6-ac1 49.9 7.5
2.4.23-rc1 45.4 0.8
2.4.22aa1 40.3 11.2
2.4.18 27.0 0.3
dbench-1.3 ext3 64 processes Averag +/- MB/sec
2.4.20-rc1aa1 102.6 16.0
2.4.21-rc6-ac1 86.1 14.5
2.4.21-pre4-ac3 84.9 14.6
2.4.19 83.6 12.8
2.4.20-rc1 81.3 12.4
2.4.22aa1 75.2 4.8
2.4.23-rc1 72.6 6.2
2.4.18 64.2 3.7
- tbench: Performance is worse than previous kernels, but not too much.
tbench (Numbers are in MB/second, so bigger is better)
=====
tbench-1.3 192 processes Average +/- MB/sec
2.4.22aa1 136.8 1.9
2.4.20-rc1aa1 105.4 3.4
2.4.21-rc6-ac1 103.4 2.8
2.4.21-pre4-ac3 101.7 2.1
2.4.18 29.8 0.1
2.4.19 29.6 0.1
2.4.20-rc1 28.1 0.2
2.4.23-rc1 26.4 0.3
tbench-1.3 64 processes Average +/- MB/sec
2.4.22aa1 135.2 5.4
2.4.20-rc1aa1 109.9 3.2
2.4.21-rc6-ac1 105.1 3.1
2.4.21-pre4-ac3 104.7 2.3
2.4.18 101.8 1.8
2.4.19 100.2 2.6
2.4.20-rc1 96.5 2.8
2.4.23-rc1 94.8 2.4
- tiobench(ext3):
In 'Sequential Reads' and 'Sequential Writes', 'Maximum
Latency' is _too much high_
tiobench
=======
Sequential Reads ext3
File Blk Num Avg
Maximum Lat% Lat% CPU
Kernel Size Size Thr Rate (CPU%) Latency
Latency &2s &10s Eff
---------------------------- ------ ----- ---
------------------------------------------------------------
2.4.20-pre10 8192 4096 1 37.28 21.64% 0.312
135.50 0.00000 0.00000 172
2.4.20-pre8 8192 4096 1 37.34 21.38% 0.311
133.76 0.00000 0.00000 175
2.4.20-rc1 8192 4096 1 37.36 21.44% 0.311
421.18 0.00000 0.00000 174
2.4.21-pre4-ac3 8192 4096 1 30.50 16.92% 0.382
549.18 0.00000 0.00000 180
2.4.21-pre4aa1 8192 4096 1 50.38 28.03% 0.230
529.88 0.00000 0.00000 180
2.4.21-rc6-ac1 8192 4096 1 31.17 17.28% 0.373
856.73 0.00000 0.00000 180
2.4.22-pre7aa1 8192 4096 1 49.77 28.51% 0.233
660.13 0.00000 0.00000 175
2.4.22aa1 8192 4096 1 50.60 28.60% 0.229
791.48 0.00000 0.00000 177
2.4.23-pre4 8192 4096 1 27.65 14.80% 0.421
761.52 0.00000 0.00000 187
2.4.23-rc1 8192 4096 1 27.54 14.89% 0.423
731.87 0.00000 0.00000 185
2.4.20-pre10 8192 4096 256 7.20 4.92% 358.227
46127.19 5.62634 0.02361 146
2.4.20-pre8 8192 4096 256 7.42 5.07% 343.312
43765.93 5.46589 0.02732 146
2.4.20-rc1 8192 4096 256 7.14 4.87% 360.645
43486.21 5.66969 0.02255 147
2.4.21-pre4-ac3 8192 4096 256 7.08 4.56% 335.749
43307.31 5.60594 0.01083 155
2.4.21-pre4aa1 8192 4096 256 8.09 9.48% 204.764
696991.89 0.59543 0.44203 85
2.4.21-rc6-ac1 8192 4096 256 7.86 16.80% 292.629
939153.21 0.77891 0.54994 47
2.4.22-pre7aa1 8192 4096 256 7.04 16.77% 418.784
84440.45 2.40402 2.22159 42
2.4.22aa1 8192 4096 256 6.69 14.81% 443.855
63577.04 2.40921 2.29164 45
2.4.23-pre4 8192 4096 256 5.10 6.83% 430.551
1602091.53 0.35501 0.31585 75
2.4.23-rc1 8192 4096 256 5.04 6.94% 432.486
1937701.66 0.33408 0.29884 73
Random Reads ext3
File Blk Num Avg
Maximum Lat% Lat% CPU
Kernel Size Size Thr Rate (CPU%) Latency
Latency &2s &10s Eff
---------------------------- ------ ----- ---
------------------------------------------------------------
2.4.20-pre10 8192 4096 1 0.95 0.81% 12.341
75.99 0.00000 0.00000 117
2.4.20-pre8 8192 4096 1 0.96 1.23% 12.185
62.69 0.00000 0.00000 78
2.4.20-rc1 8192 4096 1 0.96 0.96% 12.176
46.93 0.00000 0.00000 100
2.4.21-pre4-ac3 8192 4096 1 0.91 1.09% 12.859
112.29 0.00000 0.00000 84
2.4.21-pre4aa1 8192 4096 1 0.91 0.93% 12.879
116.53 0.00000 0.00000 98
2.4.21-rc6-ac1 8192 4096 1 0.95 0.81% 12.295
41.46 0.00000 0.00000 117
2.4.22-pre7aa1 8192 4096 1 0.90 0.98% 13.014
335.35 0.00000 0.00000 92
2.4.22aa1 8192 4096 1 0.92 1.01% 12.797
111.10 0.00000 0.00000 90
2.4.23-pre4 8192 4096 1 0.91 0.88% 12.817
99.40 0.00000 0.00000 104
2.4.23-rc1 8192 4096 1 0.89 0.82% 13.118
123.33 0.00000 0.00000 109
2.4.20-pre10 8192 4096 256 2.33 4.40% 661.619
18451.11 12.91666 0.00000 53
2.4.20-pre8 8192 4096 256 2.35 3.34% 678.482
18276.93 12.99479 0.00000 70
2.4.20-rc1 8192 4096 256 2.32 2.67% 672.370
18505.69 12.81250 0.00000 87
2.4.21-pre4-ac3 8192 4096 256 2.35 2.40% 668.279
18366.33 12.99479 0.00000 98
2.4.21-pre4aa1 8192 4096 256 3.31 5.30% 485.616
10704.34 5.72916 0.00000 62
2.4.21-rc6-ac1 8192 4096 256 2.26 4.72% 700.081
18934.72 12.78646 0.00000 48
2.4.22-pre7aa1 8192 4096 256 3.38 6.16% 671.347
8870.86 5.20833 0.00000 55
2.4.22aa1 8192 4096 256 3.22 11.08% 785.687
1793.92 0.00000 0.00000 29
2.4.23-pre4 8192 4096 256 2.20 4.49% 839.345
5697.90 0.00000 0.00000 49
2.4.23-rc1 8192 4096 256 2.28 4.10% 878.192
2519.29 0.00000 0.00000 56
Sequential Writes ext3
File Blk Num Avg
Maximum Lat% Lat% CPU
Kernel Size Size Thr Rate (CPU%) Latency
Latency &2s &10s Eff
---------------------------- ------ ----- ---
------------------------------------------------------------
2.4.20-pre10 8192 4096 1 37.71 56.08% 0.288
4315.58 0.00000 0.00000 67
2.4.20-pre8 8192 4096 1 37.80 53.97% 0.287
4157.16 0.00000 0.00000 70
2.4.20-rc1 8192 4096 1 37.68 55.47% 0.288
4225.93 0.00000 0.00000 68
2.4.21-pre4-ac3 8192 4096 1 37.36 46.88% 0.290
3403.73 0.00000 0.00000 80
2.4.21-pre4aa1 8192 4096 1 40.48 49.75% 0.251
909.26 0.00000 0.00000 81
2.4.21-rc6-ac1 8192 4096 1 34.55 42.89% 0.326
15687.97 0.00397 0.00000 81
2.4.22-pre7aa1 8192 4096 1 43.37 56.97% 0.235
3174.53 0.00005 0.00000 76
2.4.22aa1 8192 4096 1 44.25 57.99% 0.230
718.76 0.00000 0.00000 76
2.4.23-pre4 8192 4096 1 41.66 57.58% 0.264
1032.96 0.00000 0.00000 72
2.4.23-rc1 8192 4096 1 39.69 54.68% 0.278
730.02 0.00000 0.00000 73
2.4.20-pre10 8192 4096 256 9.94 71.13% 134.323
61604.97 2.87437 0.03022 14
2.4.20-pre8 8192 4096 256 9.88 75.43% 133.434
62461.37 2.83661 0.03186 13
2.4.20-rc1 8192 4096 256 9.97 73.84% 133.300
65690.42 2.93164 0.02885 14
2.4.21-pre4-ac3 8192 4096 256 9.22 44.18% 134.944
36902.34 2.99883 0.00290 21
2.4.21-pre4aa1 8192 4096 256 7.38 41.41% 168.063
151496.74 2.74157 0.28987 18
2.4.21-rc6-ac1 8192 4096 256 4.96 25.59% 284.662
387169.56 2.23074 0.83136 19
2.4.22-pre7aa1 8192 4096 256 8.66 49.63% 142.657
83844.75 2.59070 0.11811 17
2.4.22aa1 8192 4096 256 12.57 65.96% 117.692
29694.33 1.48821 0.00000 19
2.4.23-pre4 8192 4096 256 9.46 53.32% 150.534
172363.64 2.09446 0.27799 18
2.4.23-rc1 8192 4096 256 9.09 50.56% 160.462
161442.23 2.30537 0.28430 18
Random Writes ext3
File Blk Num Avg
Maximum Lat% Lat% CPU
Kernel Size Size Thr Rate (CPU%) Latency
Latency &2s &10s Eff
---------------------------- ------ ----- ---
------------------------------------------------------------
2.4.20-pre10 8192 4096 1 3.72 3.81% 0.080
0.68 0.00000 0.00000 98
2.4.20-pre8 8192 4096 1 3.71 3.25% 0.079
0.70 0.00000 0.00000 114
2.4.20-rc1 8192 4096 1 3.72 3.81% 0.080
0.71 0.00000 0.00000 98
2.4.21-pre4-ac3 8192 4096 1 3.72 3.33% 0.082
0.62 0.00000 0.00000 112
2.4.21-pre4aa1 8192 4096 1 4.49 4.98% 0.067
0.68 0.00000 0.00000 90
2.4.21-rc6-ac1 8192 4096 1 3.85 3.69% 0.082
0.64 0.00000 0.00000 104
2.4.22-pre7aa1 8192 4096 1 4.60 5.11% 0.082
1.20 0.00000 0.00000 90
2.4.22aa1 8192 4096 1 4.61 5.81% 0.083
1.08 0.00000 0.00000 79
2.4.23-pre4 8192 4096 1 3.94 5.05% 0.086
0.64 0.00000 0.00000 78
2.4.23-rc1 8192 4096 1 3.94 5.04% 0.087
0.62 0.00000 0.00000 78
2.4.20-pre10 8192 4096 256 3.63 10.31% 0.482
273.57 0.00000 0.00000 35
2.4.20-pre8 8192 4096 256 3.62 13.36% 0.599
372.91 0.00000 0.00000 27
2.4.20-rc1 8192 4096 256 3.62 10.86% 0.478
247.68 0.00000 0.00000 33
2.4.21-pre4-ac3 8192 4096 256 3.62 10.94% 0.255
3.48 0.00000 0.00000 33
2.4.21-pre4aa1 8192 4096 256 4.39 30.16% 0.199
6.97 0.00000 0.00000 15
2.4.21-rc6-ac1 8192 4096 256 3.68 17.09% 0.260
1.39 0.00000 0.00000 22
2.4.22-pre7aa1 8192 4096 256 4.45 31.24% 0.241
7.13 0.00000 0.00000 14
2.4.22aa1 8192 4096 256 4.44 21.90% 0.247
7.29 0.00000 0.00000 20
2.4.23-pre4 8192 4096 256 3.83 29.77% 0.248
55.60 0.00000 0.00000 13
2.4.23-rc1 8192 4096 256 3.77 29.99% 0.256
59.45 0.00000 0.00000 13
- bonnie++-1.02c(ext3): Performance is a little worse than previous kernels.
bonnie++-1.02c on ext3
============= --------------------- Sequential Output
------------------ -------- Sequential Input ---------- ----- Random -----
---- Per Char ----- ------ Block ----- ---- Rewrite ----
---- Per Char --- ----- Block ----- ----- Seeks -----
Kernel Size MB/sec %CPU Eff MB/sec %CPU Eff MB/sec %CPU Eff
MB/sec %CPU Eff MB/sec %CPU Eff /sec %CPU Eff
2.4.18 8192 9.03 99.0 9.12 28.65 38.3 75 18.35 25.0 73
9.13 96.3 9.5 30.40 18.0 169 383.9 2.67 14396
2.4.19 8192 8.97 98.0 9.15 41.43 51.3 81 19.94 21.0 95
9.15 97.0 9.4 30.85 18.3 168 385.9 2.33 16540
2.4.20-rc1 8192 8.85 97.0 9.12 41.20 52.3 79 19.78 21.0 94
9.16 97.0 9.4 30.71 18.3 167 617.7 5.00 12355
2.4.21-rc6-ac1 8192 7.92 87.0 9.10 43.34 47.0 92 17.38 17.0 102
9.38 99.0 9.5 31.04 14.0 222 604.0 2.67 22650
2.4.21-pre4-ac3 8192 8.85 97.0 9.13 41.51 45.3 92 17.02 16.0 106
9.37 99.0 9.5 31.41 14.7 214 614.5 3.00 20482
2.4.22aa1 8192 8.92 95.0 9.39 51.80 57.7 90 22.52 23.7 95
8.82 91.0 9.7 51.78 26.3 197 560.9 3.00 18698
2.4.23-rc1 8192 8.95 97.0 9.23 42.71 50.7 84 15.09 14.0 108
7.64 78.7 9.7 28.63 13.0 220 579.1 2.33 24819
----------------------Sequential---------------------
------------------------ Random -----------------------
----- Create ----- ----- Read ----- ----Delete ----
----- Create ---- ----- Read ----- ---- Delete ----
files /sec %CPU Eff /sec %CPU Eff /sec %CPU Eff
/sec %CPU Eff /sec %CPU Eff /sec %CPU Eff
2.4.18 65536 127 99.0 128 na na na 29074 97.0 2997
127 99.0 128 na na na 488 96.0 508
2.4.19 65536 126 99.0 127 na na na 30095 96.7 3113
129 99.0 130 na na na 490 96.0 511
2.4.20-rc1 65536 124 99.0 125 na na na 28556 99.7 2865
130 99.0 131 na na na 483 96.0 503
2.4.21-rc6-ac1 65536 121 94.7 128 na na na 26040 94.7 2750
121 95.0 128 na na na 450 89.3 504
2.4.21-pre4-ac3 65536 129 99.0 130 na na na 27719 97.7 2838
127 99.0 129 na na na 475 96.0 494
2.4.22aa1 65536 119 94.7 125 na na na 27655 95.0 2911
123 95.0 129 na na na 443 90.7 488
2.4.23-rc1 65536 124 94.7 131 na na na 26297 100.0 2629
121 95.0 128 na na na 442 89.0 497
is there any reasonable explication ?
-thanks-