2009/6/27 Chuck Swiger cswi...@mac.com:
On Jun 26, 2009, at 10:40 AM, Daniel Underwood wrote:
Suppose I'm running a multi-threaded program that's utilizing both
cores of my CPU. I'm not interested in it's speed, however, and would
like to free up another core for general purpose. Is there a way
(without altering/recompiling the program, obviously) to restricting a
process and its children to a single core?
The simple way would be to use renice to change the process priority; other
normal processes you run would get CPU first, but this task would be able to
use all system resources if nothing else is. I'm not sure whether FreeBSD
currently has a way to bind tasks to only running on a subset of available
CPUs (ie, CPUSETs mechanism in Linux, set CPU affinity in Windows, etc).
Regards,
--
-Chuck
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If you're running FreeBSD 7.1 or up, theres a program called cpuset.
man cpuset
I think that's what you're after. Allows binding of process to certain CPUs.
Regards
David N
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