[ExM Users] tasks per second in Swift/T

Justin M Wozniak wozniak at mcs.anl.gov
Mon Oct 29 12:58:02 CDT 2012


Hi Scott
     Yes, I can reproduce this.  Apparently, performance drops off past 
40K tasks on a single server.  Some data structure must be overloaded, I 
will check on this now.
     Justin

On 10/26/2012 04:14 PM, Scott Krieder wrote:
> Hi All,
>
> I'm running a swift script executing 100k sleep(0) calls to the 
> builtin sleep function, wrapped in a single foreach loop. However, in 
> a best case my runtime is roughly 1200 seconds with 8 workers (plus 1 
> server, 1 engine) and 100k bound on my foreach loop. This means that I 
> am only getting ~80 task per second. I was expecting to get something 
> closer to 1000 tasks per second, what else should I be doing to 
> improve my tasks per second? I have already disabled logging with the 
> hopes that this would increase performance.
>
> Thanks,
> Scott
>
>
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-- 
Justin M Wozniak

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