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

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Message-ID: <45E5B00E.8090003@cfl.rr.com>
Date:	Wed, 28 Feb 2007 11:38:38 -0500
From:	Phillip Susi <psusi@....rr.com>
To:	"Michael K. Edwards" <medwards.linux@...il.com>
CC:	Theodore Tso <tytso@....edu>,
	Evgeniy Polyakov <johnpol@....mipt.ru>,
	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ulrich Drepper <drepper@...hat.com>,
	linux-kernel@...r.kernel.org, Arjan van de Ven
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

Michael K. Edwards wrote:
> State machines are much harder to write without going through a real
> on-paper design phase first.  But multi-threaded code is much harder
> for a team of average working coders to write correctly, judging from
> the numerous train wrecks that I've been called in to salvage over the
> last ten years or so.

I have to agree; state machines are harder to design and read, but 
multithreaded programs are harder to write and debug _correctly_.

Another way of putting it is that the threadlet approach is easier to 
do, but harder to do _right_.

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