Messages in this thread | | | Date | Sun, 09 Mar 2003 23:28:46 +1100 | From | Nick Piggin <> | Subject | 2.5.64-mm4 tiobench (as vs dl) |
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Hi All, We are making progress in the IO scheduler department. No benchmarks to the list for a while so here is everyone's favourite (formatted for readability).
If you are interested in IO performance, please try out the latest mm tree and test as vs. deadline. If AS damages important your IO loads, please report them to me and Andrew. Thanks.
UP PIII 1.0GHz 256MB Kernel is plain 2.5.64-mm4
Antched-8192 is simply Antsched with 8192 request slots each for reads and writes. It is there for interest - it hits platter speed on my rusty old IDE disk in the seq tests. Other results have standard number of requests.
File (set) size is 512MB Block size is 4096
Num Avg Max CPU Identifier Thr Rate CPU% Lat Lat Eff Sequential Reads ------------------ --- ---- ----- ------ ----- --- Deadline 32 10.8 3.8% 10 870 284 Deadline 64 10.1 3.5% 19 1706 288 Deadline 128 8.2 2.9% 32 32179 287 Antsched 32 21.3 7.8% 5 2056 275 Antsched 64 21.0 7.7% 8 9293 273 Antsched 128 18.7 6.9% 15 15417 272 Antsched-8192 32 19.7 7.5% 6 1804 261 Antsched-8192 64 26.3 9.2% 6 2834 285 Antsched-8192 128 23.0 8.6% 14 5005 266 Random Reads ------------------ --- ---- ----- ------ ----- --- Deadline 32 0.8 0.5% 122 405 158 Deadline 64 0.8 0.6% 234 593 135 Deadline 128 0.8 0.6% 369 1010 135 Antsched 32 0.9 0.7% 117 994 119 Antsched 64 0.9 0.7% 165 1946 121 Antsched 128 1.0 0.7% 262 3558 136 Antsched-8192 32 0.8 0.7% 129 1280 112 Antsched-8192 64 0.9 0.7% 177 2177 123 Antsched-8192 128 1.0 0.7% 294 3639 132 Sequential Writes ------------------ --- ---- ----- ------ ----- --- Deadline 32 19.6 22.4% 3 14430 87 Deadline 64 19.1 21.9% 6 22190 87 Deadline 128 18.7 21.9% 9 23285 86 Antsched 32 19.1 21.8% 3 14858 88 Antsched 64 19.1 22.1% 5 19031 87 Antsched 128 18.0 20.7% 10 25844 87 Antsched-8192 32 22.6 26.2% 3 9139 86 Antsched-8192 64 23.2 28.0% 3 8517 83 Antsched-8192 128 22.2 26.8% 3 10933 83 Random Writes ------------------ --- ---- ----- ------ ----- --- Deadline 32 0.8 0.6% 3 2501 129 Deadline 64 0.8 0.7% 10 5128 118 Deadline 128 0.8 0.6% 21 6611 122
Antsched 32 0.8 0.6% 1 1024 124 Antsched 64 0.8 0.7% 11 2687 114 Antsched 128 0.8 0.7% 13 7445 112
Antsched-8192 32 1.0 0.8% 0.02 1 130 Antsched-8192 64 1.0 0.8% 0.03 30 128 Antsched-8192 128 0.9 0.7% 0.03 21 128
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