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Here are the contest (http://contest.kolivas.net) benchmarks for 2.5.41-mm3
and 2.5.41-mm3 with shared 3rd level pagetables enabled (2.5.41-mm3s)
noload:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.41 [1] 73.8 93 0 0 1.10
2.5.41-mm1 [3] 73.3 92 0 0 1.09
2.5.41-mm2 [2] 74.2 92 0 0 1.10
2.5.41-mm3 [1] 74.4 93 0 0 1.11
2.5.41-mm3s [1] 74.0 93 0 0 1.10
process_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.41 [1] 91.1 73 38 30 1.36
2.5.41-mm1 [3] 88.8 75 32 27 1.32
2.5.41-mm2 [2] 91.7 75 37 27 1.37
2.5.41-mm3 [1] 95.5 75 31 28 1.42
2.5.41-mm3s [2] 96.1 74 42 28 1.43
io_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.41 [2] 607.5 13 47 12 9.04
2.5.41-mm1 [3] 307.7 26 18 10 4.58
2.5.41-mm2 [3] 294.3 26 17 10 4.38
2.5.41-mm3 [1] 312.4 25 20 11 4.65
2.5.41-mm3s [2] 425.5 18 27 10 6.33
Here we see a difference with a bias towards more work being done by io
loading at the expense of kernel compilation time.
mem_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.41 [1] 101.6 73 30 3 1.51
2.5.41-mm1 [3] 144.6 50 37 2 2.15
2.5.41-mm2 [3] 139.2 52 36 2 2.07
2.5.41-mm3 [2] 107.1 68 27 2 1.59
2.5.41-mm3s [2] 116.5 62 28 2 1.73
Here we see a substantial improvement under mem_load with -mm3 compared to
previous -mm kernels with the new vm_swappiness feature to close to that of
vanilla 2.5.41. However adding shared pagetables seems to make the results a
little worse.
Experimental loads:
tarc_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.41 [1] 93.3 81 1 6 1.39
2.5.41-mm1 [3] 91.6 81 1 5 1.36
2.5.41-mm2 [2] 91.0 81 1 5 1.35
2.5.41-mm3 [1] 92.1 81 1 5 1.37
2.5.41-mm3s [1] 92.8 80 1 5 1.38
tarx_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.41 [2] 138.8 53 2 8 2.07
2.5.41-mm1 [3] 188.4 43 2 7 2.80
2.5.41-mm2 [2] 195.3 38 2 7 2.91
2.5.41-mm3 [1] 215.9 34 3 7 3.21
2.5.41-mm3s [1] 231.1 32 3 7 3.44
These seem to be suffering increasingly since vm_swappiness, and worse again
with shared pagetables.
read_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.41 [1] 101.1 75 7 4 1.51
2.5.41-mm1 [3] 106.8 70 5 3 1.59
2.5.41-mm2 [2] 104.2 71 6 4 1.55
2.5.41-mm3 [1] 102.0 74 6 4 1.52
2.5.41-mm3s [1] 105.2 72 7 4 1.57
lslr_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.41 [1] 93.6 75 1 18 1.39
2.5.41-mm1 [3] 96.8 72 1 21 1.44
2.5.41-mm2 [2] 97.4 72 1 21 1.45
2.5.41-mm3 [1] 95.9 74 1 22 1.43
2.5.41-mm3s [1] 97.4 73 1 22 1.45
Performance under heavy mem load seems to have been improved substantially
with -mm3. Performance under repeated tar x loading seems to be progressively
dropping off. The shared pagetables seem to only disadvantage contest based
benchmark results.
Con
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