linux-kernel - Re: workqueue thing

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Message-ID: <4B31D3E7.5000302@linux.intel.com>
Date:	Wed, 23 Dec 2009 09:25:11 +0100
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>, awalls@...ix.net,
	linux-kernel@...r.kernel.org, jeff@...zik.org,
	akpm@...ux-foundation.org, jens.axboe@...cle.com,
	rusty@...tcorp.com.au, cl@...ux-foundation.org,
	dhowells@...hat.com, avi@...hat.com, johannes@...solutions.net,
	andi@...stfloor.org
Subject: Re: workqueue thing

On 12/23/2009 8:09, Tejun Heo wrote:
> Doing several conversions shouldn't be difficult at all.  I'll try to
> convert async and slow work.

btw for async, it is essential that all the scheduled async functions runs as soon as possible;
so make sure that no async work is held back for lack of threads.. just make more immediately.
(the async work is rather latency sensitive, in general it is <poke hardware> <wait a long time> <done>,
the <poke hardware> step needs to be done as soon as possible to cut down the total time; latencies are often
cumulative in async due to dependencies)
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