linux-kernel - Re: pthread and multiple cores

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Message-ID: <4926F15A.4090203@nortel.com>
Date:	Fri, 21 Nov 2008 11:35:22 -0600
From:	"Chris Friesen" <cfriesen@...tel.com>
To:	tremolo_72@...oo.com
CC:	linux-kernel@...r.kernel.org
Subject: Re: pthread and multiple cores

Ryan Mak wrote:
> working with a multiple core box, there seems to be core(s) idle and
> not evenly distributed when threads are set(default) with system
> scope. is this a scheduler thing or am i not tuning my pthread
> parameters correctly? thanks.

Your report lacks information required for it to be useful.  Which 
kernel version are you running?  What is your architecture?  How many 
cores do you have, and how many threads?  Are you using cgroups?  If you 
can post your test app that would be even better.

Chris
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