Java线程亲和力 [英] Java thread affinity

问题描述

是否有人知道将Java进程中的各个线程锁定到特定CPU内核（在Linux上）的方法？我在C中完成了这个，但是在Java中找不到如何做到这一点。我的直觉是这需要一个JNI电话，但我希望这里有人可能有一些见解或者可能以前做过。

Does anybody know of a way to lock down individual threads within a Java process to specific CPU cores (on Linux)? I've done this in C, but can't find how to do this in Java. My instincts are that this will require a JNI call, but I was hoping someone here might have some insight or might have done it before.

谢谢！

推荐答案

你不能在纯java中做到这一点。但是如果你真的需要它 - 你可以使用JNI来调用完成工作的本机代码。这是开始的地方：

You can't do this in pure java. But if you really need it -- you can use JNI to call native code which do the job. This is the place to start with:

http://ovatman.blogspot.com/2010/02/using-java-jni-to-set-thread-affinity.html

http://blog.toadhead.net/index.php/2011/01/22/cputhread-affinity-in-java/

UPD：经过一番思考后，我决定为此创建自己的类： ThreadAffinity.java 这是基于JNA的，非常简单 - 所以，如果你想在生产中使用它，可能就是你应该花一些时间让它更稳定，但是对于基准测试和测试它运作良好。

UPD: After some thinking, I've decided to create my own class for this: ThreadAffinity.java It's JNA-based, and very simple -- so, if you want to use it in production, may be you should spent some time making it more stable, but for benchmarking and testing it works well as is.

UPD 2：还有另一个库，用于在java中使用线程关联。它使用与前面提到的相同的方法，但有另一个接口

UPD 2: There is another library for working with thread affinity in java. It uses same method as previously noted, but has another interface

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