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From: William Lee Irwin III <wli@holomorphy.com>
To: Jamie Lokier <jamie@shareable.org>
Cc: Con Kolivas <kernel@kolivas.org>,
	Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de>,
	Mike Galbraith <efault@gmx.de>,
	linux kernel mailing list <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
	gaxt <gaxt@rogers.com>, Nick Piggin <piggin@cyberone.com.au>
Subject: Re: Scheduler activations (IIRC) question
Date: Sun, 17 Aug 2003 17:23:25 -0700	[thread overview]
Message-ID: <20030818002325.GQ32488@holomorphy.com> (raw)
In-Reply-To: <20030817200253.GA3543@mail.jlokier.co.uk>

On Sun, Aug 17, 2003 at 09:02:53PM +0100, Jamie Lokier wrote:
> Vectorizing doesn't help.  In the example of 5 stat() calls, those
> calls could easily be due to 5 different service state machines, each
> responding to a different user request.  There's no easy way to work
> out that they could have been submitted as a single vector.

Well, it's pretty much orthogonal to "making everything async", but it
does have the advantage of batching and hence reducing the number of
system call traps that need to be made to get a given amount of work
done. It's unfortunate there aren't more users of the vectored API's.


-- wli

  reply	other threads:[~2003-08-18  0:22 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-08-15 15:49 [PATCH] O16int for interactivity Con Kolivas
2003-08-15 18:26 ` Timothy Miller
2003-08-15 18:45   ` Richard B. Johnson
2003-08-16  2:31   ` Con Kolivas
2003-08-18 15:46     ` Timothy Miller
2003-08-18 15:43       ` Nick Piggin
2003-08-18 19:48         ` Timothy Miller
2003-08-18 22:46           ` Nick Piggin
2003-08-15 19:00 ` Felipe Alfaro Solana
2003-08-16  2:14   ` [PATCH]O16.1int was " Con Kolivas
2003-08-15 21:01 ` Mike Fedyk
2003-08-15 23:03 ` Scheduler activations (IIRC) question Jamie Lokier
2003-08-15 23:54   ` Mike Fedyk
2003-08-16  0:54     ` Jamie Lokier
2003-08-16  6:14       ` Mike Galbraith
2003-08-16 14:18         ` Jamie Lokier
2003-08-17  5:51           ` Mike Galbraith
2003-08-17  6:55             ` Jamie Lokier
2003-08-17  7:05               ` Nick Piggin
2003-08-17  8:34               ` Mike Galbraith
2003-08-17 17:12                 ` Jamie Lokier
2003-08-17 17:15                   ` Arjan van de Ven
2003-08-17 18:26                     ` Jamie Lokier
2003-08-17 18:27                   ` Mike Galbraith
2003-08-17 18:29                     ` Jamie Lokier
2003-08-17 18:46                     ` Jamie Lokier
2003-08-16 20:54         ` Ingo Oeser
2003-08-16 21:39           ` Jamie Lokier
     [not found]             ` <20030817144203.J670@nightmaster.csn.tu-chemnitz.de>
2003-08-17 20:02               ` Jamie Lokier
2003-08-18  0:23                 ` William Lee Irwin III [this message]
2003-08-18 10:38                 ` Ingo Oeser
2003-08-18 13:09                   ` Jamie Lokier
2003-08-16  7:01 ` [PATCH] O16int for interactivity Con Kolivas
2003-08-18 10:08 ` Apurva Mehta
2003-08-18 10:30   ` Con Kolivas
2003-08-18 12:13     ` Apurva Mehta

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