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Date: Thu, 22 Feb 2007 13:42:04 -0800
From: "Michael K. Edwards" <medwards.linux@gmail.com>
To: "Ingo Molnar" <mingo@elte.hu>
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3
Cc: "David Miller" <davem@davemloft.net>, johnpol@2ka.mipt.ru,
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       alan@lxorguk.ukuu.org.uk, zach.brown@oracle.com, suparna@in.ibm.com,
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On 2/22/07, Ingo Molnar <mingo@elte.hu> wrote:
> Secondly, even assuming lots of pending requests/async-threads and a
> naive queueing model, an open request will eat up resources on the
> server no matter what.

Another fundamental misconception.  Kernel AIO is not for servers.
One programmer in a hundred is working on a server codebase, and one
in a thousand dares to touch server plumbing.  Kernel AIO is for
clients, especially when mated to GUIs with an event delivery
mechanism.  Ask yourself why the one and only thing that Windows NT
has ever gotten right about networking is I/O completion ports.

Cheers,
- Michael