From: "Chris Friesen" <cfriesen@nortel.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ken Chen <kenchen@google.com>, Ingo Molnar <mingo@elte.hu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Dhaval Giani <dhaval@linux.vnet.ibm.com>
Subject: Re: [patch] sched: add locking when update the task_group's cfs_rq[] array.
Date: Wed, 19 Nov 2008 15:50:45 -0600 [thread overview]
Message-ID: <49248A35.4080401@nortel.com> (raw)
In-Reply-To: <1227128331.29743.61.camel@lappy.programming.kicks-ass.net>
Peter Zijlstra wrote:
> Will it scale, half-way, I'd say. It races a little, but should
> converge. The biggest issue is that we're running with 10 bit fixed
> point math, and on large cpu machines you get into granularity problems.
Is there any way to get higher resolution math on 64-bit machines? (I'm
assuming that most larger SMP boxes will be 64-bit capable.)
Chris
next prev parent reply other threads:[~2008-11-19 21:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-19 6:48 [patch] sched: add locking when update the task_group's cfs_rq[] array Ken Chen
2008-11-19 7:53 ` Ingo Molnar
2008-11-19 8:22 ` Ken Chen
2008-11-19 16:54 ` Peter Zijlstra
2008-11-19 17:21 ` Ken Chen
2008-11-19 20:58 ` Peter Zijlstra
2008-11-19 21:50 ` Chris Friesen [this message]
2008-11-22 10:09 ` Peter Zijlstra
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