netdev - Re: [Patch] fix ia64 build failure when CONFIG

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Message-Id: <20080729.140040.72089155.davem@davemloft.net>
Date:	Tue, 29 Jul 2008 14:00:40 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	bhutchings@...arflare.com
Cc:	tony.luck@...el.com, jgarzik@...hat.com,
	linux-kernel@...r.kernel.org, linux-ia64@...r.kernel.org,
	netdev@...r.kernel.org, matthew@....cx, holt@....com,
	linux-net-drivers@...arflare.com
Subject: Re: [Patch] fix ia64 build failure when CONFIG_SFC=m

From: Ben Hutchings <bhutchings@...arflare.com>
Date: Tue, 29 Jul 2008 18:48:41 +0100

> I think a single core in each package can generally saturate the
> memory bus and this is why spreading the load wider is not useful.

I disagree, especially for routing and firewall setups.

You want as many cpu threads as possible, even on the same core,
doing the routing and firewall lookups through the various
datastructures, in parallel.
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