Re: [boost] very poor thread performance

From: Frank Mori Hess (frank.hess_at_[hidden])
Date: 2008-05-14 17:23:41

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On Wednesday 14 May 2008 17:14 pm, James Sutherland wrote:
> Okay, then I am interpreting things correctly, and my internal timer
> seems to be consistent with the output of the "time" command that you
> refer to.  To restate, the sum of "real" and "system" time is the
> pertinent measure.  The results you posted then indicate that there is
> no speedup associated with increasing the number of threads.  I am now
> seeing the same thing...

No, the "real" time is the pertinent measure.  I'm saying the program took 
4.991s to complete with 2 threads and 9.668s to complete with 1 thread.  You 
might be less confused if you increase the number of loops in operator() so 
the program is slow enough you can measure the execution time by watching a 
clock.

- -- 
Frank
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