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Results on both machines over per-connection emulated links: seven grace delay settings with a fifth client CPU; the promising ones over three link qualities (100 Mbit/s 2 ms 0.1%, 20 Mbit/s 5 ms 0.5%, 5 Mbit/s 25 ms 1%); copying against splice() with and without grace delay, the CONNECT mix included; and the slow link with waits matched to its rate (10 and 20 ms). Grace delay saves 35-46% of 3proxy's CPU per gigabyte on streams at 20 Mbit/s and 21-29% at 5 Mbit/s with a 10 ms wait, does nothing on fast links, and costs CPU with waits too short for the rate or once the CPU is exhausted. Over these links splice() and copying cost about the same in the mix scenarios. A caveat says that every scenario but the mix ones is synthetic. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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4.9 KiB
| 1 | proxy | scenario | rep | gbit | rate | p50_ms | p90_ms | p99_ms | errors | timeouts | retrans | prx_cpu_s | prx_task_s | cpu_s_per_gb | cpu_us_per_req | peak_mb | cli_util | prx_util | srv_util | cli_thread | srv_thread | bound |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 3proxy-devel-s0 | mix-connect-3k | 0 | 0.5026553528000001 | 2016.3 | 1769.472 | 3276.8 | 6029.312 | 0 | 0 | 0 | 9.07 | 5.4787170000000005 | 14.435338168749329 | 449.83385408917326 | 1624.10546875 | 0.7859016966940703 | 0.7752136752136752 | 0.26531552280055276 | 1.7160011364626462 | 0.3318112845458311 | client |
| 3 | 3proxy-devel-s | mix-connect-3k | 0 | 0.5055435112 | 2018.2 | 1572.864 | 3276.8 | 6029.312 | 0 | 0 | 0 | 8.73 | 4.983674000000001 | 13.814834619125461 | 432.5636705975622 | 1643.046875 | 0.7853107344632768 | 0.7611159546643418 | 0.2474964234620887 | 1.682817359760398 | 0.3133705694787233 | client |
| 4 | 3proxy-devel-s0-g8000,2,2 | mix-connect-3k | 0 | 0.5077507432 | 2027.1 | 1572.864 | 3145.728 | 6029.312 | 0 | 0 | 0 | 8.97 | 5.182219999999999 | 14.13291875217092 | 442.50406985348525 | 1628.4765625 | 0.7713158346200034 | 0.7614601018675722 | 0.2532169117647059 | 1.6409090179701302 | 0.3096839969383878 | client |
| 5 | 3proxy-devel-s-g8000,2,2 | mix-connect-3k | 0 | 0.492786896 | 1972 | 1441.792 | 3145.728 | 6029.312 | 0 | 0 | 0 | 8.93 | 5.155992 | 14.49713873885153 | 452.8397565922921 | 1648.78125 | 0.7797196746842014 | 0.7587085811384877 | 0.25252989880404786 | 1.5377254742818998 | 0.31142995915036503 | client |
| 6 | 3proxy-devel-s0-g6000,3,2 | mix-connect-3k | 0 | 0.5180710432 | 2059.2 | 1572.864 | 3014.656 | 5767.168 | 0 | 0 | 0 | 8.73 | 4.974272000000001 | 13.480776607126149 | 423.95104895104896 | 1624.7890625 | 0.7704663212435233 | 0.7480719794344473 | 0.2525533890436397 | 1.6337551510668915 | 0.30846803460564226 | client |
| 7 | 3proxy-devel-s-g6000,3,2 | mix-connect-3k | 0 | 0.5005130736 | 2002.1 | 1638.4 | 3276.8 | 5767.168 | 0 | 0 | 0 | 8.56 | 4.808815000000001 | 13.68196029475303 | 427.5510713750562 | 1657.8359375 | 0.788545486292998 | 0.740484429065744 | 0.246485473289597 | 1.6741640196162766 | 0.3037022737184374 | client |
| 8 | 3proxy-devel-s | mix-connect-3k | 1 | 0.501611408 | 2012.4 | 1572.864 | 3145.728 | 6029.312 | 0 | 0 | 0 | 8.7 | 5.0259730000000005 | 13.875282517498086 | 432.31961836613 | 1651.9296875 | 0.7911971830985915 | 0.759825327510917 | 0.25213270142180094 | 1.7217516572757408 | 0.3147178102317144 | client |
| 9 | 3proxy-devel-s0-g8000,2,2 | mix-connect-3k | 1 | 0.4731266224 | 1935.9 | 2097.152 | 3670.016 | 6553.6 | 0 | 0 | 0 | 9.38 | 6.211530999999999 | 15.860447594208347 | 484.52915956402705 | 1624.125 | 0.7885977337110481 | 0.8235294117647058 | 0.27073403241182076 | 1.6967236704681563 | 0.3475210945286125 | client |
| 10 | 3proxy-devel-s-g8000,2,2 | mix-connect-3k | 1 | 0.5073942288 | 2004.6 | 1638.4 | 3276.8 | 6029.312 | 0 | 0 | 0 | 9.1 | 5.489731 | 14.347817903284753 | 453.9559014267185 | 1652.72265625 | 0.7735391017860239 | 0.7811158798283262 | 0.2600373482726424 | 1.6689494274684802 | 0.3340759738875872 | client |
| 11 | 3proxy-devel-s0-g6000,3,2 | mix-connect-3k | 1 | 0.4832782848 | 1941.3 | 1769.472 | 3407.872 | 6029.312 | 0 | 0 | 0 | 9.52 | 6.0416859999999994 | 15.75903623137507 | 490.3930355947046 | 1621.59375 | 0.7744945567651633 | 0.8115942028985508 | 0.2722634508348794 | 1.6804565953110593 | 0.34377127665015755 | client |
| 12 | 3proxy-devel-s-g6000,3,2 | mix-connect-3k | 1 | 0.4924578528 | 1970 | 1703.936 | 3407.872 | 6291.456 | 0 | 0 | 0 | 9.16 | 5.66202 | 14.880461258429953 | 464.9746192893401 | 1654.5625 | 0.7813310285220397 | 0.7855917667238422 | 0.26139534883720933 | 1.6640131407202619 | 0.3442440271664262 | client |
| 13 | 3proxy-devel-s0 | mix-connect-3k | 1 | 0.4992314712 | 1970.7 | 1900.544 | 3538.944 | 6291.456 | 0 | 0 | 0 | 9.18 | 5.6932979999999995 | 14.710611056525076 | 465.8243263814888 | 1624.52734375 | 0.7835807860262008 | 0.7900172117039587 | 0.2626168224299065 | 1.7137227393703787 | 0.34112783016938886 | client |
| 14 | 3proxy-devel-s0-g8000,2,2 | mix-connect-3k | 2 | 0.4930580888 | 1971.3 | 1703.936 | 3276.8 | 6029.312 | 0 | 0 | 0 | 9.45 | 6.154132 | 15.332878968479058 | 479.3790899406483 | 1626.4375 | 0.7757137942896457 | 0.8125537403267412 | 0.26891143911439114 | 1.751814076984423 | 0.3489944950977998 | client |
| 15 | 3proxy-devel-s-g8000,2,2 | mix-connect-3k | 2 | 0.470694008 | 1898.1 | 1835.008 | 3538.944 | 6291.456 | 0 | 0 | 0 | 9.46 | 6.355941999999999 | 16.078386109389353 | 498.39312997207736 | 1648.43359375 | 0.791696113074205 | 0.8312829525483304 | 0.2665719696969697 | 1.6803208230109552 | 0.35431600310337713 | client |
| 16 | 3proxy-devel-s0-g6000,3,2 | mix-connect-3k | 2 | 0.49970959119999997 | 2002.9 | 1572.864 | 3145.728 | 6029.312 | 0 | 0 | 0 | 9.28 | 5.6852670000000005 | 14.856628991594988 | 463.32817414748615 | 1624.421875 | 0.768188057652711 | 0.7851099830795262 | 0.26172953081876726 | 1.6541433623643533 | 0.3376026904937915 | client |
| 17 | 3proxy-devel-s-g6000,3,2 | mix-connect-3k | 2 | 0.4930426048 | 1979.8 | 1638.4 | 3276.8 | 6029.312 | 0 | 0 | 0 | 8.65 | 5.057483999999999 | 14.03529823311529 | 436.91281947671484 | 1657.2578125 | 0.7802408797346831 | 0.7515204170286707 | 0.24506114769520226 | 1.6559641915334768 | 0.32044526316624616 | client |
| 18 | 3proxy-devel-s0 | mix-connect-3k | 2 | 0.508268592 | 2037.5 | 1572.864 | 3145.728 | 6029.312 | 0 | 0 | 0 | 9.02 | 5.386245000000001 | 14.197217993749256 | 442.6993865030675 | 1626.52734375 | 0.7777970511708586 | 0.7702818104184458 | 0.25405656003708854 | 1.6728295996411624 | 0.32472836537380906 | client |
| 19 | 3proxy-devel-s | mix-connect-3k | 2 | 0.515330956 | 2053.4 | 1507.328 | 3145.728 | 5767.168 | 0 | 0 | 0 | 8.7 | 5.001646999999999 | 13.505883780053763 | 423.68754261225286 | 1650.703125 | 0.7894550601556971 | 0.7591623036649214 | 0.24846190250828207 | 1.5811331699083153 | 0.31776826337477704 | client |