On Sat, Apr 30, 2011 at 02:30, Radu Brumariu <brum76_at_gmail.com> wrote:
> I have a small app written in C++ using boost::thread and in each
> thread I GET a url and then collect the TOTAL_TIME for the call.
> For some reason, the total time to complete the request is getting
> higher in direct proportion with the number of threads(however, the
> start time, doesn't fluctuate the same way ) :

> Since all threads are spawned about the same time ( 10 at each time )
> -- it is observed that every 10 threads the latency reported increases
>
> Any suggestions on what could cause this ?

Maybe I'm not quite following you but isn't this to be expected?

There is a fixed amount of CPU time to go around and it's being sliced
thinner and thinner as the number of threads grows. How can the
response times *not* go up?
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Received on 2011-04-30