Date: Sat, 19 Jun 2010 11:15:18 +0200
From: Andi Kleen <andi@firstfloor.org>
To: Tejun Heo <tj@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>, Andy Walls <awalls@md.metrocast.net>,
       Daniel Walker <dwalker@codeaurora.org>, mingo@elte.hu,
       linux-kernel@vger.kernel.org, jeff@garzik.org,
       akpm@linux-foundation.org, rusty@rustcorp.com.au,
       cl@linux-foundation.org, dhowells@redhat.com, arjan@linux.intel.com,
       johannes@sipsolutions.net, oleg@redhat.com, axboe@kernel.dk
Subject: Re: Overview of concurrency managed workqueue
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> Well, in general, queueing to execution latency should be fairly low
> especially if it's put at the front of the queue but well it's nothing
> with any kind of guarantee.

This is not a hard real time situation with a hard deadline,
just "ASAP"

> I'm currently writing a kthread wrapper which basically provides
> similar interface to wq but guarantees binding to a specific thread
> which can be RT of course.  If single threadedness is acceptable, I
> think this would render better behavior.  What do you think?

I think I would prefer simply high priority, but normal work item.

Otherwise we have the thread hanging around all the time 
and on a large system it's still only a single one, so
it'll never scale.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.
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