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From: Peter Williams <pwil3058@bigpond.net.au>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Michal Kaczmarski <fallow@op.pl>,
	Shane Shrybman <shrybman@aei.ca>
Subject: Re: [PATCH] V-3.0 Single Priority Array O(1) CPU Scheduler Evaluation
Date: Tue, 03 Aug 2004 10:33:36 +1000	[thread overview]
Message-ID: <410EDD60.8040406@bigpond.net.au> (raw)
In-Reply-To: <20040802134257.GE2334@holomorphy.com>

William Lee Irwin III wrote:
> On Mon, Aug 02, 2004 at 04:31:46PM +1000, Peter Williams wrote:
> 
>>3. Priority based O(1) scheduler with active/expired arrays replaced by 
>>a single array and an O(1) promotion mechanism plus scheduling 
>>statistics with new interactive bonus mechanism and throughput bonus 
>>mechanism:
> 
> 
> Hmm. Given do_promotions() I'd expect fenceposts, not iteration over
> the priority levels of the runqueue.

I don't understand what you mean.  Do you mean something like the more 
complex promotion mechanism in the (earlier) EBS scheduler where tasks 
only get promoted if they've been on a queue without being serviced 
within a given time?

Peter
-- 
Peter Williams                                   pwil3058@bigpond.net.au

"Learning, n. The kind of ignorance distinguishing the studious."
  -- Ambrose Bierce


  reply	other threads:[~2004-08-03  0:40 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-08-02  6:31 [PATCH] V-3.0 Single Priority Array O(1) CPU Scheduler Evaluation Peter Williams
2004-08-02 13:42 ` William Lee Irwin III
2004-08-03  0:33   ` Peter Williams [this message]
2004-08-03  2:03     ` William Lee Irwin III
2004-08-03  3:39       ` Peter Williams
2004-08-03 10:49         ` William Lee Irwin III
2004-08-04  0:37           ` Peter Williams
2004-08-04  0:50             ` William Lee Irwin III
2004-08-04  1:36               ` Peter Williams
2004-08-04  1:51                 ` William Lee Irwin III
2004-08-04  2:40                   ` Peter Williams
2004-08-04  7:05                     ` Ingo Molnar
2004-08-04  7:44                     ` William Lee Irwin III
2004-08-05  1:06                       ` Peter Williams
2004-08-05  2:00                         ` William Lee Irwin III
2004-08-05  2:12                           ` Peter Williams
     [not found] <2oEEn-197-9@gated-at.bofh.it>
2004-08-02 13:27 ` Andi Kleen
2004-08-03  0:27   ` Peter Williams
2004-08-03  3:53     ` Andrew Morton
2004-08-03  4:38       ` Peter Williams
2004-08-03  6:51       ` Andi Kleen
  -- strict thread matches above, loose matches on Subject: below --
2004-08-07  1:44 Peter Williams

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