Minimizing Java Thread Context Switching Overhead

Posted by binil on Stack Overflow See other posts from Stack Overflow or by binil
Published on 2010-05-28T05:57:39Z Indexed on 2010/05/28 6:01 UTC
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Filed under:

java

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Performance

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multithreading

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solaris

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thread-pool

I have a Java application running on Sun 1.6 32-bit VM/Solaris 10 (x86)/Nahelem 8-core(2 threads per core).

A specific usecase in the application is to respond to some external message. In my performance test environment, when I prepare and send the response in the same thread that receives the external input, I get about 50 us advantage than when I hand off the message to a separate thread to send the response. I use a ThreadPoolExecutor with a SynchronousQueue to do the handoff.

In your experience what is the acceptable delay between scheduling a task to a thread pool and it getting picked up for execution? What ideas had worked for you in the past to try improve this?

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