linux-kernel - Re: [PATCH v3] sched: modify how to compute a slice and check a preemptability

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Message-ID: <20150720044750.GH3956@byungchulpark-X58A-UD3R>
Date:	Mon, 20 Jul 2015 13:47:50 +0900
From:	Byungchul Park <byungchul.park@....com>
To:	Mike Galbraith <umgwanakikbuti@...il.com>
Cc:	mingo@...nel.org, peterz@...radead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] sched: modify how to compute a slice and check a
 preemptability

On Mon, Jul 20, 2015 at 05:42:38AM +0200, Mike Galbraith wrote:
> On Mon, 2015-07-20 at 09:34 +0900, Byungchul Park wrote:
> 
> > yes, i also think that a preemption granularity has little meaning, atually 
> > because of tick granularity.
> 
> See HR_TICK.  It's not cheap though, why it's default off.

yes, i thought so. now, thank to you, i am assured.

thank you,
byungchul

> 
> 	-Mike
> 
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