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

Started byPeter Zijlstra <peterz@infradead.org>
First post2015-07-19 13:20 +0200
Last post2015-07-20 02:10 +0200
Articles 2 — 2 participants

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  Re: [PATCH v3] sched: modify how to compute a slice and check a  preemptability Peter Zijlstra <peterz@infradead.org> - 2015-07-19 13:20 +0200
    Re: [PATCH v3] sched: modify how to compute a slice and check a  preemptability Byungchul Park <byungchul.park@lge.com> - 2015-07-20 02:10 +0200

#1187566 — Re: [PATCH v3] sched: modify how to compute a slice and check a preemptability

FromPeter Zijlstra <peterz@infradead.org>
Date2015-07-19 13:20 +0200
SubjectRe: [PATCH v3] sched: modify how to compute a slice and check a preemptability
Message-ID<pNUNr-14g-13@gated-at.bofh.it>
On Sun, Jul 19, 2015 at 06:11:00PM +0900, byungchul.park@lge.com wrote:
> doesn't it make sense?

No, people have already given you all kinds of reasons why this isn't a
good change. It is also a very invasive change and you have no
performance numbers one way or another.

I'm going to fully ignore this thread from now on.
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#1187883

FromByungchul Park <byungchul.park@lge.com>
Date2015-07-20 02:10 +0200
Message-ID<pO6OC-1sk-1@gated-at.bofh.it>
In reply to#1187566
On Sun, Jul 19, 2015 at 01:15:09PM +0200, Peter Zijlstra wrote:
> On Sun, Jul 19, 2015 at 06:11:00PM +0900, byungchul.park@lge.com wrote:
> > doesn't it make sense?
> 
> No, people have already given you all kinds of reasons why this isn't a

i feel sorry. but all kinds?. i got only a reason, that is, latency problem.
so i already mentioned both of two cases, because of the reason people told 
me. furthermore, nobody gave me a reason why the code should use local cfs's 
nr_running to get period at all.

> good change. It is also a very invasive change and you have no
> performance numbers one way or another.
> 
> I'm going to fully ignore this thread from now on.

sorry for bothering you.

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> the body of a message to majordomo@vger.kernel.org
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