Here are interbench numbers for a pentium4 HT with 2.6.16-ck1 and 2.6.16-mm1
The rules I use for flagging diffferences are:
1. Deadlines met is the primary endpoint.
2. When latency is out of bounds, what is the worst max latency as that will
be the most noticeable jerkiness, stutter etc, but I only flag them if at
least one value is >=7ms since that is required to be human perceptible.
Using 2036365 loops per ms, running every load for 30 seconds
Benchmarking kernel 2.6.16-ck1 at datestamp 200603250244
--- Benchmarking simulated cpu of Audio in the presence of simulated ---
Load Latency +/- SD (ms) Max Latency % Desired CPU % Deadlines Met
None 0.015 +/- 0.0159 0.023 100 100
Video 0.757 +/- 0.881 2 100 100
X 0.051 +/- 0.189 1.02 100 100
Burn 0.019 +/- 0.0201 0.056 * 100 100 *
Write 0.055 +/- 0.344 4.83 100 100
Read 0.024 +/- 0.0251 0.064 100 100
Compile 0.03 +/- 0.0888 1.69 100 100
Memload 0.321 +/- 4.94 112 99.8 99.8
--- Benchmarking simulated cpu of Video in the presence of simulated ---
Load Latency +/- SD (ms) Max Latency % Desired CPU % Deadlines Met
None 0.016 +/- 0.0162 0.028 100 100
X 0.043 +/- 0.17 2.01 * 100 100 *
Burn 0.188 +/- 2.33 45.3 * 99.6 99.2 *
Write 0.043 +/- 0.558 16.7 * 100 99.9 *
Read 0.021 +/- 0.0217 0.078 * 100 100
Compile 0.093 +/- 1.08 18.4 * 100 99.6 *
Memload 0.385 +/- 4.83 138 98.9 98.3 *
--- Benchmarking simulated cpu of X in the presence of simulated ---
Load Latency +/- SD (ms) Max Latency % Desired CPU % Deadlines Met
None 0.026 +/- 0.356 6 * 100 99 *
Video 14 +/- 26.5 72 * 35.6 26.5 *
Burn 51.4 +/- 98.4 456 * 15.1 7.91 *
Write 2.19 +/- 6.65 36 * 78.6 71.1
Read 0.756 +/- 3.33 24 * 90.6 86
Compile 34.5 +/- 53.8 165 * 20.7 11.6 *
Memload 4.05 +/- 12.6 80 73.3 66.8
--- Benchmarking simulated cpu of Gaming in the presence of simulated ---
Load Latency +/- SD (ms) Max Latency % Desired CPU
None 1.49 +/- 6.03 34.8 * 98.5 *
Video 68.7 +/- 68.9 74 * 59.3
X 60.7 +/- 70.6 143 62.2
Burn 514 +/- 534 602 * 16.3
Write 20.6 +/- 31.4 109 * 82.9
Read 7.77 +/- 9.04 31.3 92.8
Compile 436 +/- 459 697 * 18.7
Memload 27.1 +/- 58.3 755 78.7 *
Using 2036365 loops per ms, running every load for 30 seconds
Benchmarking kernel 2.6.16-mm1 at datestamp 200603250939
--- Benchmarking simulated cpu of Audio in the presence of simulated ---
Load Latency +/- SD (ms) Max Latency % Desired CPU % Deadlines Met
None 0.012 +/- 0.0121 0.023 100 100
Video 1.16 +/- 1.24 2.01 100 100
X 0.302 +/- 0.681 2.01 100 100
Burn 0.365 +/- 8.63 211 99.7 99.7
Write 0.017 +/- 0.0193 0.072 100 100
Read 0.02 +/- 0.0209 0.056 100 100
Compile 0.019 +/- 0.0196 0.046 100 100
Memload 0.092 +/- 0.623 11 * 100 * 100 *
--- Benchmarking simulated cpu of Video in the presence of simulated ---
Load Latency +/- SD (ms) Max Latency % Desired CPU % Deadlines Met
None 0.011 +/- 0.0114 0.04 100 100
X 0.885 +/- 3.73 18.7 100 95.8
Burn 0.977 +/- 22.6 934 98.4 95.9
Write 0.047 +/- 0.789 23.7 100 99.8
Read 0.017 +/- 0.0181 0.058 100 100
Compile 1.6 +/- 17.6 370 96.5 94.5
Memload 0.501 +/- 3.48 44.4 * 98.9 97.4
--- Benchmarking simulated cpu of X in the presence of simulated ---
Load Latency +/- SD (ms) Max Latency % Desired CPU % Deadlines Met
None 0.255 +/- 2.25 27 94.1 93.3
Video 14.8 +/- 27.7 76 34.8 25.5
Burn 39.4 +/- 75.6 505 13.1 7.07
Write 1.6 +/- 6.17 48 78.7 74.9 *
Read 0.709 +/- 3.26 30 91.2 88 *
Compile 42.9 +/- 80.5 667 11.3 5.61
Memload 2.23 +/- 7.24 42 * 71.4 66.8
--- Benchmarking simulated cpu of Gaming in the presence of simulated ---
Load Latency +/- SD (ms) Max Latency % Desired CPU
None 5.31 +/- 19 123 95
Video 69.8 +/- 70.1 80.1 58.9 *
X 60.3 +/- 70.3 120 * 62.4
Burn 295 +/- 310 710 25.3 *
Write 17.3 +/- 30.8 110 85.2 *
Read 5.64 +/- 6.45 20.3 * 94.7 *
Compile 392 +/- 420 713 20.3
Memload 27.8 +/- 47.8 430 * 78.3
Summary:
Deadlines Max Latencies
ck mm ck mm
Audio 1 1 1 1
Video 5 0 5 1
X 4 2 6 1
Game 2 4 5 3
Note that most of the differences between -ck and -mm on this benchmark are
due to the staircase cpu scheduler in -ck. It has staircase v14.2 as recently
posted to the mailing list.
Cheers,
Con
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