因此,我决定为此编写测试,并在实际数据上查看它。
测试图例
- Itr:迭代
- 序列:顺序方法。
- PrlEx:并行扩展-Parallel.ForEach
- TPL:任务并行库
- TPool:线程池
测试结果
单核CPU [Win7-32]-在VMWare下运行-
Test Environment: 1 physical cpus, 1 cores, 1 logical cpus.
Will be parsing a total of 10 feeds.
________________________________________________________________________________
Itr. Seq. PrlEx TPL TPool
________________________________________________________________________________
#1 10.82s 04.05s 02.69s 02.60s
#2 07.48s 03.18s 03.17s 02.91s
#3 07.66s 03.21s 01.90s 01.68s
#4 07.43s 01.65s 01.70s 01.76s
#5 07.81s 02.20s 01.75s 01.71s
#6 07.67s 03.25s 01.97s 01.63s
#7 08.14s 01.77s 01.72s 02.66s
#8 08.04s 03.01s 02.03s 01.75s
#9 08.80s 01.71s 01.67s 01.75s
#10 10.19s 02.23s 01.62s 01.74s
________________________________________________________________________________
Avg. 08.40s 02.63s 02.02s 02.02s
________________________________________________________________________________
单核CPU [WinXP]-在VMWare下运行-
Test Environment: 1 physical cpus, NotSupported cores, NotSupported logical cpus.
Will be parsing a total of 10 feeds.
________________________________________________________________________________
Itr. Seq. PrlEx TPL TPool
________________________________________________________________________________
#1 10.79s 04.05s 02.75s 02.13s
#2 07.53s 02.84s 02.08s 02.07s
#3 07.79s 03.74s 02.04s 02.07s
#4 08.28s 02.88s 02.73s 03.43s
#5 07.55s 02.59s 03.99s 03.19s
#6 07.50s 02.90s 02.83s 02.29s
#7 07.80s 04.32s 02.78s 02.67s
#8 07.65s 03.10s 02.07s 02.53s
#9 10.70s 02.61s 02.04s 02.10s
#10 08.98s 02.88s 02.09s 02.16s
________________________________________________________________________________
Avg. 08.46s 03.19s 02.54s 02.46s
________________________________________________________________________________
双核CPU [Win7-64]
Test Environment: 1 physical cpus, 2 cores, 2 logical cpus.
Will be parsing a total of 10 feeds.
________________________________________________________________________________
Itr. Seq. PrlEx TPL TPool
________________________________________________________________________________
#1 07.09s 02.28s 02.64s 01.79s
#2 06.04s 02.53s 01.96s 01.94s
#3 05.84s 02.18s 02.08s 02.34s
#4 06.00s 01.43s 01.69s 01.43s
#5 05.74s 01.61s 01.36s 01.49s
#6 05.92s 01.59s 01.73s 01.50s
#7 06.09s 01.44s 02.14s 02.37s
#8 06.37s 01.34s 01.46s 01.36s
#9 06.57s 01.30s 01.58s 01.67s
#10 06.06s 01.95s 02.88s 01.62s
________________________________________________________________________________
Avg. 06.17s 01.76s 01.95s 01.75s
________________________________________________________________________________
四核CPU [Win7-64]-支持HyprerThreading-
Test Environment: 1 physical cpus, 4 cores, 8 logical cpus.
Will be parsing a total of 10 feeds.
________________________________________________________________________________
Itr. Seq. PrlEx TPL TPool
________________________________________________________________________________
#1 10.56s 02.03s 01.71s 01.69s
#2 07.42s 01.63s 01.71s 01.69s
#3 11.66s 01.69s 01.73s 01.61s
#4 07.52s 01.77s 01.63s 01.65s
#5 07.69s 02.32s 01.67s 01.62s
#6 07.31s 01.64s 01.53s 02.17s
#7 07.44s 02.56s 02.35s 02.31s
#8 08.36s 01.93s 01.73s 01.66s
#9 07.92s 02.15s 01.72s 01.65s
#10 07.60s 02.14s 01.68s 01.68s
________________________________________________________________________________
Avg. 08.35s 01.99s 01.75s 01.77s
________________________________________________________________________________
总结
- 无论您是在单核环境还是多核环境下运行,Parallel Extensions,TPL和ThreadPool的行为都相同,并给出近似结果。
- TPL仍然具有优势,例如易于处理异常,取消支持以及轻松返回Task结果的能力。尽管并行扩展也是另一个可行的选择。
自行运行测试
您可以在此处下载源代码并自行运行。如果可以发布结果,我也会添加它们。
更新:修复了源链接。