reliable time-stamp counter (TSC) in multicore environment

This is a discussion on reliable time-stamp counter (TSC) in multicore environment within the C Programming forums, part of the General Programming Boards category; Hello, I am working on a project to measure the execution time of a program in multicore environment. I realized ...

  1. #1
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    reliable time-stamp counter (TSC) in multicore environment

    Hello,

    I am working on a project to measure the execution time of a program in multicore environment. I realized that TSC of one core is not synchronized with another core. How can I get an uniform and reliable TSC across 8 cores lets say.

    Thanks

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    There's no way. You can lock your thread to one core, however.

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    Basically, I tried to measure the latency of spinlock (from unlock -> acquire lock) in multicore environment. I have one thread with its affinity set on certain core to release the lock and the other thread with different affinity to acquire lock. So far the observed latency tend to fluctuate a lot.

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