From: Mike Galbraith <bitbucket@online.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Peter Boonstoppel <pboonstoppel@nvidia.com>,
Ingo Molnar <mingo@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Paul Walmsley <pwalmsley@nvidia.com>
Subject: Re: [PATCH RFC] sched/rt: preserve global runtime/period ratio in do_balance_runtime()
Date: Wed, 22 May 2013 10:46:23 +0200 [thread overview]
Message-ID: <1369212383.5916.28.camel@marge.simpson.net> (raw)
In-Reply-To: <20130522081601.GP26912@twins.programming.kicks-ass.net>
On Wed, 2013-05-22 at 10:16 +0200, Peter Zijlstra wrote:
> I thought we already had a knob for that; RT_RUNTIME_SHARE. And as Mike
> said, we might consider flipping the default on that.
sched,rt: disable rt_runtime borrowing by default
Make the default RT_RUNTIME_SHARE setting reflect the most common
throttle role, that of safety mechanism to protect the box.
Signed-off-by: Mike Galbraith <bitbucket@online.de>
diff --git a/kernel/sched/features.h b/kernel/sched/features.h
index 99399f8..0945d38 100644
--- a/kernel/sched/features.h
+++ b/kernel/sched/features.h
@@ -57,7 +57,7 @@ SCHED_FEAT(NONTASK_POWER, true)
SCHED_FEAT(TTWU_QUEUE, true)
SCHED_FEAT(FORCE_SD_OVERLAP, false)
-SCHED_FEAT(RT_RUNTIME_SHARE, true)
+SCHED_FEAT(RT_RUNTIME_SHARE, false)
SCHED_FEAT(LB_MIN, false)
/*
next prev parent reply other threads:[~2013-05-22 8:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-21 21:30 [PATCH RFC] sched/rt: preserve global runtime/period ratio in do_balance_runtime() Peter Boonstoppel
2013-05-22 5:59 ` Mike Galbraith
2013-05-22 7:58 ` Michael Wang
2013-05-22 8:16 ` Peter Zijlstra
2013-05-22 8:46 ` Mike Galbraith [this message]
2013-05-23 22:24 ` Peter Boonstoppel
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