Docker 限制与性能测试
宿主机使用 htop 及 ctop 查看进程及占用
Docker 限制：4Core/2G
容器使用 stress 及 hardinfo 进行测试
CPU Blowfish
------------
-CPU Blowfish-
<big><b>This Machine</b></big> 3100 MHz 24.643
Intel(R) Celeron(R) M processor 1.50GHz (null) 26.1876862
PowerPC 740/750 (280.00MHz) (null) 172.816713
CPU CryptoHash
--------------
-CPU CryptoHash-
<big><b>This Machine</b></big> 3100 MHz 68.646
CPU Fibonacci
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-CPU Fibonacci-
<big><b>This Machine</b></big> 3100 MHz 3.646
Intel(R) Celeron(R) M processor 1.50GHz (null) 8.1375674
PowerPC 740/750 (280.00MHz) (null) 58.07682
CPU N-Queens
------------
-CPU N-Queens-
<big><b>This Machine</b></big> 3100 MHz 9.097
FPU FFT
-------
-FPU FFT-
<big><b>This Machine</b></big> 3100 MHz 2.284
FPU Raytracing
--------------
-FPU Raytracing-
<big><b>This Machine</b></big> 3100 MHz 10.704
Intel(R) Celeron(R) M processor 1.50GHz (null) 40.8816714
PowerPC 740/750 (280.00MHz) (null) 161.312647
Cpu usage 200%-300% on the host
CPU Blowfish
------------
-CPU Blowfish-
<big><b>This Machine</b></big> 3100 MHz 6.055
Intel(R) Celeron(R) M processor 1.50GHz (null) 26.1876862
PowerPC 740/750 (280.00MHz) (null) 172.816713
CPU CryptoHash
--------------
-CPU CryptoHash-
<big><b>This Machine</b></big> 3100 MHz 274.023
CPU Fibonacci
-------------
-CPU Fibonacci-
<big><b>This Machine</b></big> 3100 MHz 1.239
Intel(R) Celeron(R) M processor 1.50GHz (null) 8.1375674
PowerPC 740/750 (280.00MHz) (null) 58.07682
CPU N-Queens
------------
-CPU N-Queens-
<big><b>This Machine</b></big> 3100 MHz 6.633
FPU FFT
-------
-FPU FFT-
<big><b>This Machine</b></big> 3100 MHz 0.692
FPU Raytracing
--------------
-FPU Raytracing-
<big><b>This Machine</b></big> 3100 MHz 6.301
Intel(R) Celeron(R) M processor 1.50GHz (null) 40.8816714
PowerPC 740/750 (280.00MHz) (null) 161.312647
Cpu usage 300%-400% on the host
CPU Blowfish
------------
-CPU Blowfish-
<big><b>This Machine</b></big> 3100 MHz 4.016
Intel(R) Celeron(R) M processor 1.50GHz (null) 26.1876862
PowerPC 740/750 (280.00MHz) (null) 172.816713
CPU CryptoHash
--------------
-CPU CryptoHash-
<big><b>This Machine</b></big> 3100 MHz 369.231
CPU Fibonacci
-------------
-CPU Fibonacci-
<big><b>This Machine</b></big> 3100 MHz 1.305
Intel(R) Celeron(R) M processor 1.50GHz (null) 8.1375674
PowerPC 740/750 (280.00MHz) (null) 58.07682
CPU N-Queens
------------
-CPU N-Queens-
<big><b>This Machine</b></big> 3100 MHz 4.748
FPU FFT
-------
-FPU FFT-
<big><b>This Machine</b></big> 3100 MHz 0.723
FPU Raytracing
--------------
-FPU Raytracing-
<big><b>This Machine</b></big> 3100 MHz 4.317
Intel(R) Celeron(R) M processor 1.50GHz (null) 40.8816714
PowerPC 740/750 (280.00MHz) (null) 161.312647
Cpu usage 200%-300% on the host
CPU Blowfish
------------
-CPU Blowfish-
<big><b>This Machine</b></big> 3100 MHz 8.323
Intel(R) Celeron(R) M processor 1.50GHz (null) 26.1876862
PowerPC 740/750 (280.00MHz) (null) 172.816713
CPU CryptoHash
--------------
-CPU CryptoHash-
<big><b>This Machine</b></big> 3100 MHz 204.086
CPU Fibonacci
-------------
-CPU Fibonacci-
<big><b>This Machine</b></big> 3100 MHz 1.253
Intel(R) Celeron(R) M processor 1.50GHz (null) 8.1375674
PowerPC 740/750 (280.00MHz) (null) 58.07682
CPU N-Queens
------------
-CPU N-Queens-
<big><b>This Machine</b></big> 3100 MHz 2.982
FPU FFT
-------
-FPU FFT-
<big><b>This Machine</b></big> 3100 MHz 0.718
FPU Raytracing
--------------
-FPU Raytracing-
<big><b>This Machine</b></big> 3100 MHz 3.430
Intel(R) Celeron(R) M processor 1.50GHz (null) 40.8816714
PowerPC 740/750 (280.00MHz) (null) 161.312647
| E1-512M | E1-2048M | E1-3072M | C1-2048M | |
|---|---|---|---|---|
| CPU(only) maximum usage | 32%/45% | 100%/110% | 200%/202% | 100%/105% |
| CPU(with RAM) maximum usage | 32%/45% | 136%/140% | 200%/400% | 80%/300% |
| CPU Blowfish(less is better) | 24.643 | 6.055 | 4.016 | 8.323 |
通过对比宿主机 CPU 使用，发现当容器负载增加时，所有核心的负载都有所上升，0，2，4，6 核心尤为显著，docker 指定 cpuset 似乎失效。
通过 cpuperiod 和 cpuquota 可以控制 cpu 性能和内存大小成正比，对应比例与issue给出比例相同；当容器分配性能为 1 核时，尽管负载平均分配到了宿主机的所有可用核心，但是容器性能仍为宿主机 1 核。
存在反复大量使用内存的进程时，宿主机的负载会超过存 CPU 负载极限，推测是 docker 在调配内存资源时需要额外占用 CPU 性能。