From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Bharata B Rao <bharata@linux.vnet.ibm.com>,
Balbir Singh <balbir@in.ibm.com>,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
Gautham Shenoy <ego@in.ibm.com>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] sched: rt group scheduling, compare child's limit against parent's
Date: Fri, 27 Mar 2009 17:23:59 +0100 [thread overview]
Message-ID: <1238171039.16890.308.camel@twins> (raw)
In-Reply-To: <20090327161915.GA8891@linux.vnet.ibm.com>
On Fri, 2009-03-27 at 21:49 +0530, Dhaval Giani wrote:
> Hi Ingo, Peter,
>
> I've not been able to follow the reasoning behind checking the sum of
> the children's runtime not exceeding the parent's runtime as opposed to
> the child's runtime not exceeding that of the parent.
>
> From what I understand, the limits only guarantee that the group cannot
> exceed a certain limit and not guarantee a group gets to run. If my
> understanding is corrct, maybe the following patch is needed?
NAK, rt needs that as it guarantees a min too.
prev parent reply other threads:[~2009-03-27 16:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-27 16:19 [PATCH] sched: rt group scheduling, compare child's limit against parent's Dhaval Giani
2009-03-27 16:23 ` Peter Zijlstra [this message]
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