linux-kernel - Re: [RFC PATCH 2/3] sched: add yield

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Message-ID: <20101203140607.GA9800@linux.vnet.ibm.com>
Date:	Fri, 3 Dec 2010 19:36:07 +0530
From:	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Rik van Riel <riel@...hat.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Avi Kiviti <avi@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Anthony Liguori <aliguori@...ux.vnet.ibm.com>
Subject: Re: [RFC PATCH 2/3] sched: add yield_to function

On Fri, Dec 03, 2010 at 03:03:30PM +0100, Peter Zijlstra wrote:
> No, because they do receive service (they spend some time spinning
> before being interrupted), so the respective vruntimes will increase, at
> some point they'll pass B0 and it'll get scheduled.

Is that sufficient to ensure that B0 receives its fair share (1/3 cpu in this
case)?

- vatsa
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