netdev - Re: OFT - reserving CPU's for networking

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Date:	Sat, 01 May 2010 15:13:33 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	gandalf@...fs.se
Cc:	tglx@...utronix.de, shemminger@...tta.com, eric.dumazet@...il.com,
	ak@...goyle.fritz.box, netdev@...r.kernel.org, andi@...stfloor.org,
	peterz@...radead.org
Subject: Re: OFT - reserving CPU's for networking

From: Martin Josefsson <gandalf@...fs.se>
Date: Sat, 1 May 2010 22:31:05 +0200 (CEST)

> On Fri, 30 Apr 2010, David Miller wrote:
> 
>> Then we can do cool tricks like having the cpu spin on a mwait() on
>> the
>> network device's status descriptor in memory.
> 
> Can you have mwait monitor multiple cachelines for stores?

The idea is that if you have hundreds of cpus threads (several of my
machines do, and it's not too long before these kinds of boxes will be
common) in your machine you can spare one for each NIC.
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