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From: Thomas Gleixner <tglx@linutronix.de>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org,
	Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>,
	Daniel Walker <dwalker@mvista.com>,
	Oleg Nesterov <oleg@tv-sign.ru>, Esben Nielsen <simlo@phys.au.dk>
Subject: Re: [patch] Real-Time Preemption, plist fixes
Date: Sun, 05 Jun 2005 10:53:44 +0200	[thread overview]
Message-ID: <1117961624.20785.258.camel@tglx.tec.linutronix.de> (raw)
In-Reply-To: <20050605082616.GA26824@elte.hu>

On Sun, 2005-06-05 at 10:26 +0200, Ingo Molnar wrote:

> > Date: Sun, 05 Jun 2005 02:17:12 +0200

:)

> but i think the fundamental question remains even on Sunday mornings -
> is the plist overhead worth it? Compared to the simple sorted list we 
> exchange O(nr_RT_tasks_running) for O(nr_RT_levels_used) [which is in 
> the 1-100 range], is that a significant practical improvement? By 
> overhead i dont just mean cycle cost, but also architectural flexibility 
> and maintainability.

That was my question too. 

tglx



  reply	other threads:[~2005-06-05  8:53 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-05  0:17 patch] Real-Time Preemption, plist fixes Thomas Gleixner
2005-06-05  0:53 ` Daniel Walker
2005-06-05  2:33   ` Plist cleanup on RT Daniel Walker
2005-06-05  8:32   ` patch] Real-Time Preemption, plist fixes Thomas Gleixner
2005-06-05 10:53     ` Thomas Gleixner
2005-06-05  7:58 ` Esben Nielsen
2005-06-05  8:05   ` Thomas Gleixner
2005-06-05  8:42     ` Esben Nielsen
2005-06-05  8:53       ` Ingo Molnar
2005-06-05  9:00         ` Esben Nielsen
2005-06-05  8:18 ` Ingo Molnar
2005-06-05  8:21   ` Thomas Gleixner
2005-06-05  8:26 ` [patch] " Ingo Molnar
2005-06-05  8:53   ` Thomas Gleixner [this message]
2005-06-05  9:47     ` Ingo Molnar
2005-06-05 15:08       ` Daniel Walker
2005-06-05  8:54   ` Esben Nielsen
2005-06-05 13:49     ` Ingo Molnar
2005-06-05 14:35       ` Esben Nielsen
2005-06-06  7:32     ` Ingo Molnar
2005-06-06  8:57       ` Esben Nielsen
2005-06-06 12:08         ` Ingo Molnar
2005-06-06 15:04       ` Daniel Walker
2005-06-05 14:51   ` Daniel Walker
2005-06-05 15:17     ` Thomas Gleixner
2005-06-05 15:21       ` Daniel Walker
2005-06-05 15:02   ` Daniel Walker
2005-06-05 16:29   ` Daniel Walker
2005-06-06  7:44     ` Ingo Molnar
2005-06-06 14:49       ` Daniel Walker
2005-06-06  7:44 Perez-Gonzalez, Inaky
2005-06-06  7:57 ` Ingo Molnar
2005-06-06 14:56   ` Daniel Walker

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