[691] in Pthreads mailing list archive
Re: CPU hog?
daemon@ATHENA.MIT.EDU (Thierry Baron)
Mon Jul 28 10:36:46 1997
Date: Mon, 28 Jul 1997 10:07:55 -0400
From: Thierry Baron <baron@cim.mcgill.ca>
To: "Andrew N. Edmond" <edmond@shaman.lycaeum.org>
Cc: pthreads@MIT.EDU
Andrew N. Edmond wrote:
>
> I have written a pretty simple mutlithreaded application with
> Pthreads/1.60b6. There are two threads, one waiting for input from a
> socket, the other processing data received.
>
> When I run this program (counterd), it's using 100% of the available CPU!
>
> So, I made another program, just one thread, that simply listens on a
> socket, and does nothing else. This too is using 100% of the available
> CPU!
>
> Is there a way to eliminate this behavior?
>
> Andy
>
you have to put a timeout (>~100ms) in the select for incoming socket
connections.
This enables to release the CPU. To enforce that, you can also add a
pthread_yield
in your loops.
--
Thierry
