linux-kernel - Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

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Date:	Wed, 21 Feb 2007 15:46:45 -0800
From:	Ulrich Drepper <drepper@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	"Michael K. Edwards" <medwards.linux@...il.com>,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@....com.au>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Zach Brown <zach.brown@...cle.com>,
	Evgeniy Polyakov <johnpol@....mipt.ru>,
	"David S. Miller" <davem@...emloft.net>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Davide Libenzi <davidel@...ilserver.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

Ingo Molnar wrote:
> in terms of AIO, the best queueing model is i think what the kernel uses 
> internally: freely ordered, with barrier support.

Speaking of AIO, how do you imagine lio_listio is implemented?  If there
is no asynchronous syscall it would mean creating a threadlet for each
request but this means either waiting or creating several/many threads.

-- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖


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