# Python Pipeline 性能测试

- [测试环境](#1)
- [性能指标与结论](#2)

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## 测试环境

测试环境如下表所示：
|          | GPU | 显存 | CPU | 内存 |
|----------|---------|----------|----------------------------------------------|------|
| Serving端 | 4x Tesla P4-8GB | 7611MiB | Intel(R) Xeon(R) Gold 5117 CPU @ 2.00GHz 48核 | 216G |
| Client端  | 4x Tesla P4-8GB | 7611MiB | Intel(R) Xeon(R) Gold 5117 CPU @ 2.00GHz 48核 | 216G |

使用单卡GPU，未开启TensorRT。
模型：ResNet_v2_50

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## 性能指标与结论

通过测试，使用 Python Pipeline 模式通过多进程并发，充分利用 GPU 显卡，具有较好的吞吐性能。


测试数据如下：

|model_name |thread_num |batch_size |CPU_util(%) |GPU_memory(mb) |GPU_util(%) |qps(samples/s) |total count |mean(ms) |median(ms) |80 percent(ms) |90 percent(ms) |99 percent(ms) |total cost(s) |each cost(s)|
|:--|:--|:--|:--|:--|:--|:--|:--|:--|:--|:--|:--|:--|:--|:--
|ResNet_v2_50 |1 |1 |2.2 |3327 |17.25 |17.633658869240787 |355 |56.428481238996476 |38.646728515625 |39.496826171875 |39.98369140625 |1273.1911083984373 |20.131953477859497 |20.033540725708008|
|ResNet_v2_50 |1 |4 |2.7 |3617 |28.122 |53.50748430453522 |268 |74.71539215543378 |74.6181640625 |75.3138671875 |75.6051025390625 |77.85322998046874 |20.03458046913147 |20.024930953979492|
|ResNet_v2_50 |1 |8 |1.7 |3877 |25.7869 |59.60582783086999 |150 |133.5897119140625 |132.7503662109375 |134.968310546875 |136.470703125 |140.79039062499996 |20.132259607315063 |20.03933620452881|
|ResNet_v2_50 |1 |16 |7.0 |4777 |27.0175 |63.2627646819339 |80 |252.30162048339844 |251.8448486328125 |253.046630859375 |253.91142578125 |263.361640625 |20.233070850372314 |20.18476152420044|
|ResNet_v2_50 |1 |32 |7.5 |6567 |38.532 |62.945314687348024 |40 |506.8969482421875 |507.3531494140625 |510.562353515625 |511.421240234375 |536.8068920898437 |20.335111618041992 |20.276386737823486|
|ResNet_v2_50 |2 |1 |4.7 |6567 |49.4828 |50.40600094376044 |1010 |39.63352195815285 |39.5345458984375 |40.452880859375 |41.1375 |42.940522460937494 |20.037296772003174 |20.01696753501892|
|ResNet_v2_50 |2 |4 |2.7 |6567 |44.4744 |83.4255836891382 |420 |95.38548002697172 |95.7069091796875 |97.599951171875 |98.098583984375 |102.39680908203125 |20.137707471847534 |20.03199553489685|
|ResNet_v2_50 |2 |8 |2.2 |6567 |42.898 |91.3727510505176 |230 |174.89108568274457 |175.0452880859375 |175.82001953125 |176.7634033203125 |178.64064453125002 |20.13729453086853 |20.1132071018219|
|ResNet_v2_50 |2 |16 |2.2 |6567 |45 |97.5591285698611 |124 |327.16720088835683 |328.6126708984375 |329.75185546875 |330.386962890625 |336.86397460937496 |20.336385011672974 |20.284939169883728|
|ResNet_v2_50 |2 |32 |3.2 |6567 |59.5714 |100.70765418116333 |64 |633.9812698364258 |637.8568115234375 |648.103515625 |650.7439697265625 |659.2212915039062 |20.336090803146362 |20.28787398338318|
|ResNet_v2_50 |4 |1 |3.1 |6567 |64.3333 |80.27845081929433 |1617 |49.56464230756223 |49.4873046875 |51.5537109375 |52.693408203125 |55.207568359374996 |20.142391681671143 |20.038144528865814|
|ResNet_v2_50 |4 |4 |3.3 |6567 |70.4563 |136.62061939701394 |688 |116.51574919944586 |121.8629150390625 |129.8181640625 |133.384423828125 |142.69500732421875 |20.143372297286987 |20.041599333286285|
|ResNet_v2_50 |4 |8 |3.0 |6567 |70.896 |158.46554975132275 |399 |201.30669079926378 |210.69775390625 |228.51748046875 |236.427294921875 |252.24822753906233 |20.143179416656494 |20.081032752990723|
|ResNet_v2_50 |4 |16 |3.2 |6567 |66.3832 |156.4935247130092 |197 |407.6668608224937 |423.974609375 |450.368212890625 |464.45986328125 |482.93658203125 |20.141408443450928 |20.078101694583893|
|ResNet_v2_50 |4 |32 |3.3 |6567 |72.4791 |162.01742190796557 |104 |785.5079204852765 |813.0341796875 |887.107958984375 |909.6556640625 |935.3334838867188 |20.541000843048096 |20.423666059970856|
|ResNet_v2_50 |8 |1 |3.5 |6567 |93.977 |115.9749228558386 |2337 |68.5580409078145 |65.45849609375 |76.13930664062501 |83.542041015625 |91.45666015624998 |20.15090799331665 |20.028797417879105|
|ResNet_v2_50 |8 |4 |4.2 |6567 |90.0952 |175.58748591910316 |889 |180.7330482920592 |170.5810546875 |218.99931640625 |240.06337890625002 |254.413759765625 |20.252012729644775 |20.084695398807526|
|ResNet_v2_50 |8 |8 |2.6 |6567 |93.8693 |206.76595246418208 |526 |306.52158695119414 |303.043212890625 |321.0791015625 |350.5477294921875 |400.32452392578125 |20.351513147354126 |20.15437400341034|
|ResNet_v2_50 |8 |16 |3.2 |6567 |85.7273 |205.31850043117367 |265 |614.1745522553066 |552.372314453125 |775.89169921875 |802.022607421875 |902.2763183593761 |20.650842428207397 |20.345011442899704|
|ResNet_v2_50 |8 |32 |5.0 |6567 |89.8717 |219.8410273718835 |146 |1138.4533474020761 |1039.640869140625 |1364.289794921875 |1474.6744384765625 |1788.2614379882834 |21.251720190048218 |20.777225106954575|
|ResNet_v2_50 |12 |1 |5.0 |6567 |89.4762 |110.00858327847862 |2218 |108.50048552943953 |103.015625 |121.09404296875003 |137.1392333984375 |151.80401123046872 |20.162063121795654 |20.055511037508648|
|ResNet_v2_50 |12 |4 |4.1 |6567 |77.7619 |153.7824464757549 |779 |309.68895575507463 |285.585205078125 |378.07421875 |413.481640625 |424.70853515625 |20.262390613555908 |20.104551911354065|
|ResNet_v2_50 |12 |8 |3.6 |6567 |72.6977 |165.36021780846013 |425 |571.1991590073529 |510.995849609375 |731.9383300781251 |747.6568359375 |757.304716796875 |20.56117272377014 |20.230452219645183|
|ResNet_v2_50 |12 |16 |1.5 |6567 |76.2222 |189.6414991568285 |252 |987.7153136238219 |926.00390625 |1080.99130859375 |1249.4956298828126 |1434.4802392578124 |21.26116919517517 |20.74245794614156|
|ResNet_v2_50 |12 |32 |2.8 |6567 |84.25 |203.868228281784 |138 |1811.640237559443 |1764.2760009765625 |1855.28046875 |2023.56826171875 |2586.8038134765625 |21.66105055809021 |20.834286351998646|
|ResNet_v2_50 |16 |1 |4.8 |6567 |94.3333 |116.34927733312234 |2347 |136.7957122373642 |135.959716796875 |144.1568359375 |146.105517578125 |175.05707519531248 |20.172020435333252 |20.067057371139526|
|ResNet_v2_50 |16 |4 |15.4 |6567 |83.6364 |160.59012047270738 |822 |393.3079394412447 |396.446533203125 |426.272216796875 |429.777734375 |564.1119360351562 |20.47448492050171 |20.206754431128502|
|ResNet_v2_50 |16 |8 |6.8 |6567 |81.0233 |169.95774070621547 |437 |741.5512622684854 |751.521484375 |763.199169921875 |948.8041992187501 |1001.156142578125 |20.56981921195984 |20.254074171185493|
|ResNet_v2_50 |16 |16 |3.5 |6567 |77.8706 |186.56600081516 |248 |1332.1007946383568 |1365.2745361328125 |1399.212255859375 |1432.4037353515625 |1771.4374853515626 |21.26861262321472 |20.64799252152443|
|ResNet_v2_50 |16 |32 |4.3 |6567 |83.6371 |201.1293408638195 |140 |2419.3400198800223 |2561.09228515625 |2616.081103515625 |2642.0835205078124 |2883.8197412109366 |22.274224042892456 |21.169659316539764|