On 21 February 2011 14:57, Venkatesh Srinivas <[email protected]> wrote:
Hi,
Just have some numbers for interbench comparing dsched none to dsched FQ.
These numbers are from a 12/31/2010 kernel, on an Atom N270 running an SMP
kernel. The disk was an ata/100 disk connected via a USB bridge.
Interbench
dsched noop
(Audio)
Test Latency/SD (ms) Max latency % cpu % deadlines hit
None 0.03 +/- 0.0306 0.057 100 100
Video 0.045 +/- 0.033 8.04 100 100
X 0.033 +/- 0.033 0.074 100 100
Burn 0.051 +/- 0.266 6.45 100 100
Write 2.55 +/- 13.5 119 98.5 97.8
Read 0.132 ++/ 1.09 26.5 100 100
Compile 2.67 +/- 13.4 131 99 98.7
Memload 2.41 +/- 29.6 634 96.6 96.6
(Video)
Test Latency/SD (ms) Max latency % cpu % deadlines hit
None 0.06 +/- 0.88 33.4 99.9 99.9
X 0.097 +/- 1.86 65.9 99.8 99.8
Burn 33.7 +/- 93.6 535 45.1 43.4
Write 3.03 +/- 11.7 169 89.2 86.9
Read 0.108 +/- 0.87 36.2 99.9 99.9
Compile 25.8 +/- 60.7 434 49.6 40.1
Memload 1.69 +/- 23.8 603 95.3 94.7
dsched fq
(Audio)
Test Latency/SD (ms) Max latency % cpu % deadlines hit
None 0.087 +/- 1.06 24.2 100 100
Video 0.076 +/- 0.598 10.4 100 100
X 0.195 +/- 3.91 95.7 100 99.8
Burn 0.095 +/- 0.778 13.6 100 100
Write 2.1 +/- 10.8 134 99.2 99
Read 0.128 +/- 0.655 11.4 100 100
Compile 1.13 +/- 4.65 28.9 100 100
Memload 2.54 +/- 19.5 309 95.8 95.8
(Video)
Test Latency/SD (ms) Max latency % cpu % deadlines hit
None 0.087 +/- 2.26 95.8 99.8 99.8
X 0.14 +/- 1.57 28.3 100 100
Burn 36.7 +/- 103 615 42.6 40.9
Write 2.97 +/- 12 217 90.1 87.8
Read 0.11 +/- 0.99 33.8 99.8 99.8
Compile 29.8 +/- 76.2 608 46.3 38.4
Memload 1.25 +/- 14.1 317 95.4 94.5
------------------
Disabled bioqdisksort (for all requests to ordered):
noop disk scheduler
(Audio)
Test Latency/SD (ms) Max Latency % cpu % deadlines hit
None 0.03 +/- 0.0304 0.046 100 100
Video 0.034 +/- 0.0342 0.053 100 100
X 0.032 +/- 0.033 0.044 100 100
Burn 0.039 +/- 0.04 0.058 100 100
Write 3.05 +/- 13.2 129 98.5 98.1
Read 0.089 +/- 0.247 4.2 100 100
Compile 5.2 +/- 18 150 97.6 97.4
Memload 3.75 +/- 36.4 702 95.8 95.8
(video)
None 0.032 +/- 0.0328 0.076 100 100
X 0.066 +/- 0.91 27.4 100 99.9
Burn 36.4 +/- 104 772 43 41.3
Write 3.13 +/- 12.7 182 89.7 87.6
Read 0.084 +/- 0.131 392 100 100
Compile 29.7 +/- 77.3 510 47.4 42.4
Memload 1.3 +/- 18.4 583 95.1 94.3
FQ disk scheduler
(Audio)
None 0.031 +/- 0.0322 0.122 100 100
Video 0.057 +/- 0.467 11.4 100 100
X 0.034 +/- 0.0345 0.076 100 100
Burn 0.038 +/- 0.039 0.125 100 100
Write 2.63 +/- 13.4 225 99.8 98.7
Read 0.085 +/- 0.225 5.03 100 100
Compile 1.77 +/ 7.83 116 99.7 99.7
Memload 2.34 +/- 22.5 350 95.6 95.6
(Video)
None 0.057 +/- 0.741 26.6 100 100
X 0.046 +/- 0.396 16.7 100 99.9
Burn 38.6 +/- 106 610 42.4 40.7
Write 3.28 +/- 11.5 113 94.3 90
Read 0.086 +/- 0.181 5.01 100 100
Compile 31.3 +/- 85.2 739 46.8 41.3
Memload 2.17 +/- 28.1 673 94.5 92.7
-- vs
