linux-kernel - Re: [RFC PATCH 00/17] virtual-bus

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Message-ID: <20090403111854.GA11935@one.firstfloor.org>
Date:	Fri, 3 Apr 2009 13:18:54 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Gerd Hoffmann <kraxel@...hat.com>
Cc:	Avi Kivity <avi@...hat.com>,
	Herbert Xu <herbert@...dor.apana.org.au>, ghaskins@...ell.com,
	anthony@...emonkey.ws, andi@...stfloor.org,
	linux-kernel@...r.kernel.org, agraf@...e.de, pmullaney@...ell.com,
	pmorreale@...ell.com, rusty@...tcorp.com.au,
	netdev@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [RFC PATCH 00/17] virtual-bus

> Check shared ring status when stuffing a request.  If there are requests

That means you're bouncing cache lines all the time. Probably not a big
issue on single socket but could be on larger systems.

-Andi

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