linux-kernel - Re: [RFC PATCH 0/6] Convert all tasklets to workqueues

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Message-ID: <20070629190404.GA4064@ms2.inr.ac.ru>
Date:	Fri, 29 Jun 2007 23:04:05 +0400
From:	Alexey Kuznetsov <kuznet@....inr.ac.ru>
To:	Oleg Nesterov <oleg@...sign.ru>
Cc:	Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...e.hu>,
	Jeff Garzik <jeff@...zik.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Christoph Hellwig <hch@...radead.org>,
	john stultz <johnstul@...ibm.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>, matthew.wilcox@...com
Subject: Re: [RFC PATCH 0/6] Convert all tasklets to workqueues

Hello!

> Also, create_workqueue() is very costly. The last 2 lines should be
> reverted.

Indeed.

The result improves from 3988 nanoseconds to 3975. :-)
Actually, the difference is within statistical variance,
which is about 20 ns.

Alexey
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