From: Gerold Jury <gjury@hal.grips.com>
To: <mingo@elte.hu>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: aio
Date: Mon, 24 Dec 2001 12:08:49 +0100 [thread overview]
Message-ID: <200112241108.fBOB8oi28275@hal.grips.com> (raw)
In-Reply-To: <Pine.LNX.4.33.0112211446370.5098-100000@localhost.localdomain> <200112211527.fBLFR6X07357@hal.grips.com>
In-Reply-To: <200112211527.fBLFR6X07357@hal.grips.com>
> On Friday 21 December 2001 14:48, Ingo Molnar wrote:
> > is this a fundamental limitation expressed in the interface, or just an
> > implementational limitation? On sockets this is indeed a big problem,
> > HTTP pipelining wants completely separate receive/send queues.
> >
> > Ingo
>
I got the _POSIX_SYNCHRONIZED_IO completely wrong.
It has nothing to do with the ordering of the aio read/write requests.
Aio_read and aio_write work with absolute positions inside the file size.
The order of requests is unspecified in SUSV V2.
SUSV V2 does neither prevent nor force the desired behaviour.
It seems like it is up to the implementation how to deal with the request
order.
As mentioned earlier, SGI-kaio does the right thing with the same interface.
I want to add, that a combination of sigwaitinfo / sigtimedwait and aio is a
very efficient way to deal with sockets. The accept may be handled with real
time signals as well by using fcntl F_SETSIG and F_SETFL FASYNC.
Gerold
next prev parent reply other threads:[~2001-12-24 11:09 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20011218020456.A11541@redhat.com>
2001-12-18 16:50 ` Scheduler ( was: Just a second ) Linus Torvalds
2001-12-18 16:56 ` Rik van Riel
2001-12-18 17:18 ` Linus Torvalds
2001-12-18 19:04 ` Alan Cox
2001-12-18 21:02 ` Larry McVoy
2001-12-18 21:14 ` David S. Miller
2001-12-18 21:17 ` Larry McVoy
2001-12-18 21:19 ` Rik van Riel
2001-12-18 21:30 ` David S. Miller
2001-12-18 21:18 ` Rik van Riel
2001-12-19 17:44 ` IRC (was: Scheduler) Daniel Phillips
2001-12-19 17:51 ` Larry McVoy
2001-12-19 18:24 ` Daniel Phillips
2001-12-19 18:19 ` M. Edward (Ed) Borasky
2001-12-19 18:27 ` Daniel Phillips
2001-12-19 18:40 ` J Sloan
2001-12-19 16:50 ` Scheduler ( was: Just a second ) Daniel Phillips
[not found] ` <Pine.LNX.4.33.0112190859050.1872-100000@penguin.transmeta.com>
2001-12-19 18:57 ` aio Ben LaHaise
2001-12-19 19:29 ` aio Dan Kegel
2001-12-20 4:04 ` aio Benjamin LaHaise
2001-12-19 20:09 ` aio Daniel Phillips
2001-12-19 20:21 ` aio Davide Libenzi
[not found] ` <mailman.1008792601.3391.linux-kernel2news@redhat.com>
2001-12-19 20:23 ` aio Pete Zaitcev
2001-12-20 0:13 ` aio David S. Miller
2001-12-20 0:21 ` aio Benjamin LaHaise
2001-12-20 0:36 ` aio Andrew Morton
2001-12-20 0:55 ` aio H. Peter Anvin
2001-12-20 0:47 ` aio Davide Libenzi
2001-12-20 1:16 ` aio Bill Huey
2001-12-20 1:20 ` aio David S. Miller
2001-12-20 2:26 ` aio Bill Huey
2001-12-20 2:45 ` aio David S. Miller
2001-12-19 18:57 ` aio John Heil
2001-12-20 3:06 ` aio David S. Miller
2001-12-19 19:30 ` aio John Heil
2001-12-20 5:29 ` aio David S. Miller
2001-12-20 3:21 ` aio Bill Huey
2001-12-27 9:36 ` aio Martin Dalecki
2001-12-20 3:07 ` aio Bill Huey
2001-12-20 3:13 ` aio David S. Miller
2001-12-20 3:47 ` aio Benjamin LaHaise
2001-12-20 5:39 ` aio David S. Miller
2001-12-20 5:58 ` aio Benjamin LaHaise
2001-12-20 6:00 ` aio David S. Miller
2001-12-20 6:46 ` aio Mike Castle
2001-12-20 6:55 ` aio Robert Love
2001-12-20 7:13 ` aio Mike Castle
2001-12-20 7:01 ` aio David S. Miller
2001-12-20 7:27 ` aio Daniel Phillips
[not found] ` <Pine.LNX.4.33.0112201127400.2656-100000@localhost.localdomain>
2001-12-20 11:49 ` aio William Lee Irwin III
2001-12-20 16:32 ` aio Dan Kegel
2001-12-20 18:05 ` aio Davide Libenzi
2001-12-20 21:45 ` aio Lincoln Dale
2001-12-20 21:59 ` aio Linus Torvalds
2001-12-24 11:44 ` aio Gerold Jury
2001-12-20 23:02 ` aio Lincoln Dale
2001-12-21 17:24 ` aio Alan Cox
2001-12-21 17:16 ` aio Benjamin LaHaise
2001-12-23 5:35 ` aio Bill Huey
2001-12-20 14:38 ` aio Luigi Genoni
2001-12-20 17:26 ` aio Henning Schmiedehausen
2001-12-20 20:04 ` aio M. Edward (Ed) Borasky
2001-12-20 23:53 ` aio David S. Miller
2001-12-21 0:28 ` Offtopic Java/C# [Re: aio] Bill Huey
[not found] ` <mailman.1008817860.10606.linux-kernel2news@redhat.com>
2001-12-20 5:16 ` aio Pete Zaitcev
2001-12-20 16:16 ` aio Dan Kegel
2001-12-21 11:44 ` aio Gerold Jury
2001-12-21 13:48 ` aio Ingo Molnar
2001-12-21 15:27 ` aio Gerold Jury
2001-12-24 11:08 ` Gerold Jury [this message]
2001-12-20 17:24 ` aio Henning Schmiedehausen
2001-12-20 2:37 ` aio Cameron Simpson
2001-12-20 2:47 ` aio David S. Miller
2001-12-20 2:52 ` aio Cameron Simpson
2001-12-20 2:58 ` aio David S. Miller
2001-12-20 5:47 ` aio Linus Torvalds
2001-12-20 5:57 ` aio David S. Miller
2001-12-20 5:59 ` aio Benjamin LaHaise
2001-12-20 6:02 ` aio David S. Miller
2001-12-20 6:07 ` aio Benjamin LaHaise
2001-12-20 6:12 ` aio David S. Miller
2001-12-20 6:23 ` aio Linus Torvalds
2001-12-20 10:18 ` aio Ingo Molnar
2001-12-20 18:20 ` aio Robert Love
2001-12-20 22:30 ` aio Cameron Simpson
2001-12-20 22:46 ` aio Benjamin LaHaise
2001-12-20 6:09 ` aio Linus Torvalds
2001-12-20 17:28 ` aio Suparna Bhattacharya
[not found] ` <mailman.1008816001.10138.linux-kernel2news@redhat.com>
2001-12-20 5:07 ` aio Pete Zaitcev
2001-12-20 5:10 ` aio Cameron Simpson
2001-12-21 17:28 ` aio Alan Cox
2001-12-23 5:46 ` aio Bill Huey
2001-12-23 6:34 ` aio Dan Kegel
2001-12-23 18:43 ` aio Davide Libenzi
2001-12-26 20:42 ` Java and Flam^H^H^H^H AIO (was: aio) Daniel Phillips
2001-12-18 19:11 ` Scheduler ( was: Just a second ) Mike Galbraith
2001-12-18 19:15 ` Rik van Riel
2001-12-18 22:32 ` in defense of the linux-kernel mailing list Ingo Molnar
2001-12-18 17:55 ` Scheduler ( was: Just a second ) Davide Libenzi
2001-12-18 19:43 ` Alexander Viro
2001-12-20 2:56 aio Mikael Pettersson
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