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Re: [PATCH 12/13] hrtimer: create a "timer_slack" field in the task struct

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From: Arjan van de Ven
Subject: Re: [PATCH 12/13] hrtimer: create a "timer_slack" field in the task struct
Date: Tuesday, September 30, 2008 - 1:28 am

On Tue, 30 Sep 2008 14:16:09 +0900 (JST)
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:


setting timerslack to 0 has no real negative effects on the system on
the one hand, on the other hand, it'll be multimedia apps and games who
want to do this.

Requiring this type of app to be root doesn't sound like a good idea,
especially since all you get by "cheating" is ... the exact behavior
you ask for anyway. "Increased power consumption" isn't a root
privilege, the app can consume much more power just by a "while (1);"
loop for example.



-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
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Messages in current thread:
[PATCH 0/13] Turn hrtimers into a range capable timer, Arjan van de Ven, (Mon Sep 1, 4:03 pm)
[PATCH 1/13] hrtimer: add abstraction functions for access ..., Arjan van de Ven, (Mon Sep 1, 4:05 pm)
[PATCH 2/13] hrtimer: convert kvm to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:05 pm)
[PATCH 3/13] hrtimer: convert timerfd to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:06 pm)
[PATCH 4/13] hrtimer: convert net::sched_cbq to the new hr ..., Arjan van de Ven, (Mon Sep 1, 4:07 pm)
[PATCH 5/13] hrtimer: convert kernel/* to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:08 pm)
[PATCH 6/13] hrtimer: convert powerpc/oprofile to the new ..., Arjan van de Ven, (Mon Sep 1, 4:09 pm)
[PATCH 7/13] hrtimer: convert kvm-ia64 to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:09 pm)
[PATCH 8/13] hrtimer: convert s390 to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:10 pm)
[PATCH 9/13] hrtimer: convert sound/ to the new hrtimer apis, Arjan van de Ven, (Mon Sep 1, 4:11 pm)
[PATCH 10/13] hrtimer: rename the &quot;expires&quot; struct member ..., Arjan van de Ven, (Mon Sep 1, 4:12 pm)
[PATCH 10/13] hrtimer: rename the &quot;expires&quot; struct member ..., Arjan van de Ven, (Mon Sep 1, 4:12 pm)
[PATCH 11/13] hrtimer: turn hrtimers into range timers, Arjan van de Ven, (Mon Sep 1, 4:13 pm)
[PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in the ..., Arjan van de Ven, (Mon Sep 1, 4:14 pm)
[PATCH 13/13] hrtimer: make select() and poll() use the hr ..., Arjan van de Ven, (Mon Sep 1, 4:14 pm)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Peter Zijlstra, (Tue Sep 2, 1:22 am)
Re: [PATCH 13/13] hrtimer: make select() and poll() use th ..., Peter Zijlstra, (Tue Sep 2, 1:22 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Tue Sep 2, 3:04 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Peter Zijlstra, (Tue Sep 2, 4:08 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Peter Zijlstra, (Tue Sep 2, 4:15 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Tue Sep 2, 6:03 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Arjan van de Ven, (Tue Sep 2, 6:05 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Arjan van de Ven, (Tue Sep 2, 6:06 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Peter Zijlstra, (Tue Sep 2, 6:47 am)
Re: [PATCH 11/13] hrtimer: turn hrtimers into range timers, Arjan van de Ven, (Tue Sep 2, 9:02 am)
Re: [PATCH 13/13] hrtimer: make select() and poll() use th ..., Arjan van de Ven, (Tue Sep 2, 9:03 am)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Ingo Molnar, (Sat Sep 6, 7:56 am)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Arjan van de Ven, (Sat Sep 6, 9:30 am)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Ingo Molnar, (Sat Sep 6, 9:33 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Mon Sep 8, 6:27 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Mon Sep 8, 6:40 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Mon Sep 8, 7:15 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Mon Sep 8, 7:22 am)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Rusty Russell, (Thu Sep 11, 8:39 pm)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Arjan van de Ven, (Thu Sep 11, 10:42 pm)
Re: [PATCH 0/13] Turn hrtimers into a range capable timer, Thomas Gleixner, (Fri Sep 12, 1:24 pm)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Sat Sep 13, 9:24 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Ulrich Drepper, (Sun Sep 14, 8:21 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Sun Sep 14, 8:27 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Sun Sep 14, 8:57 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Ulrich Drepper, (Sun Sep 14, 9:04 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Arjan van de Ven, (Sun Sep 14, 9:14 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., Pavel Machek, (Wed Sep 17, 12:42 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., KOSAKI Motohiro, (Mon Sep 29, 10:16 pm)
Re: [PATCH 12/13] hrtimer: create a "timer_slack" field in ..., Arjan van de Ven, (Tue Sep 30, 1:28 am)
Re: [PATCH 12/13] hrtimer: create a &quot;timer_slack&quot; field in ..., KOSAKI Motohiro, (Tue Sep 30, 1:54 am)