http://contest.kolivas.org benchmarks with http://www.osdl.org hardware on
recent kernels
no_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 1 79 94.9 0.0 0.0 1.00
2.5.72 1 79 94.9 0.0 0.0 1.00
2.5.74 1 79 93.7 0.0 0.0 1.00
2.5.75 1 79 93.7 0.0 0.0 1.00
cacherun:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 1 75 98.7 0.0 0.0 0.95
2.5.72 1 76 98.7 0.0 0.0 0.96
2.5.74 1 75 98.7 0.0 0.0 0.95
2.5.75 1 76 97.4 0.0 0.0 0.96
process_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 2 109 67.9 63.5 28.4 1.38
2.5.72 2 107 70.1 65.0 28.7 1.35
2.5.74 2 109 67.9 65.0 28.4 1.38
2.5.75 2 109 68.8 64.5 28.4 1.38
ctar_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 3 103 75.7 0.0 0.0 1.30
2.5.72 3 103 75.7 0.0 0.0 1.30
2.5.74 3 104 75.0 0.0 0.0 1.32
2.5.75 3 112 71.4 1.0 5.4 1.42
xtar_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 3 106 72.6 1.0 3.8 1.34
2.5.72 3 104 74.0 1.0 3.8 1.32
2.5.74 3 106 72.6 1.0 3.8 1.34
2.5.75 3 122 63.1 2.0 4.9 1.54
io_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 5 326 21.5 112.9 18.7 4.13
2.5.72 4 356 21.9 128.9 19.3 4.51
2.5.74 4 331 23.9 117.5 18.7 4.19
2.5.75 4 119 64.7 43.8 19.3 1.51
io_other:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 2 122 63.9 53.8 22.1 1.54
2.5.72 2 120 65.0 51.2 23.0 1.52
2.5.74 2 121 64.5 50.8 22.1 1.53
2.5.75 2 116 67.2 48.2 20.7 1.47
read_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 2 104 75.0 6.3 4.8 1.32
2.5.72 2 104 75.0 6.3 4.8 1.32
2.5.74 2 104 76.0 6.6 4.8 1.32
2.5.75 2 106 74.5 8.3 6.6 1.34
list_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 2 96 80.2 0.0 7.3 1.22
2.5.72 2 97 79.4 0.0 7.2 1.23
2.5.74 2 97 79.4 0.0 7.2 1.23
2.5.75 2 95 81.1 0.0 7.4 1.20
mem_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 2 97 80.4 53.5 2.1 1.23
2.5.72 2 95 82.1 54.0 2.1 1.20
2.5.74 2 97 80.4 59.5 2.0 1.23
2.5.75 2 98 80.6 54.0 2.0 1.24
dbench_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.70 5 321 22.1 4.0 44.5 4.06
2.5.72 4 397 19.6 5.5 50.4 5.03
2.5.74 4 334 23.1 5.0 52.7 4.23
2.5.75 4 366 20.8 6.0 58.5 4.63
The anticipatory I/O scheduler changes are evident in .74->.75
Con
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