linux-kernel - Re: workqueue thing

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Message-ID: <4B31B508.5040903@garzik.org>
Date:	Wed, 23 Dec 2009 01:13:28 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>, awalls@...ix.net,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	jens.axboe@...cle.com, rusty@...tcorp.com.au,
	cl@...ux-foundation.org, dhowells@...hat.com,
	arjan@...ux.intel.com, avi@...hat.com, johannes@...solutions.net,
	andi@...stfloor.org
Subject: Re: workqueue thing

On 12/23/2009 01:02 AM, Ingo Molnar wrote:
> One key thing i havent seen in this discussion are actual measurements. I
> think a lot could be decided by simply testing this patch-set, by looking at
> the hard numbers: how much faster (or slower) did a particular key workload
> get before/after these patches.

We are dealing with situations where drivers are using workqueues to 
provide a sleep-able context, and trying to solve problems related to that.

"faster or slower?" is not very relevant for such cases.

	Jeff


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