有没有一种方法来设置线程亲和力与处理器核心与boost线程库？ [英] Is there a way to set thread affinity to a processor core with the boost thread library?

问题描述

如果我需要的处理器内核在100％运行十几秒，或者如果我让系统决定如何处理线程，我会得到更好的性能，这是一个好主意吗？

我需要的是快速执行，我担心系统可能花费几秒钟之前使用所有的内核，但我还没有找到任何方法这样做与boost线程。 / p>

解决方案

您首先需要调用 get_native_handle 成员函数，然后将获取句柄到一个平台特定的函数来设置线程的CPU亲和力（即pthread_setaffinity_np / SetThreadAffinityMask /...).//p>

至于如果这是一个好主意：profile&找出...

And would it be a good idea to do so if I needed the processor cores running on 100% for a dozen seconds or would I get better performance if I let the system decide how to handle the threads?

What I need is fast execution and I'm worried the system might spend a few seconds before using all the cores, but I haven't found any way of doing this with boost thread.

解决方案

You'll first need to call the get_native_handle member function then pass the obtained handle to a platform specific function to set the thread's CPU affinity (i.e. pthread_setaffinity_np/SetThreadAffinityMask/...).

As to if that's a good idea: profile & find out...

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