netdev - Re: [PATCH v3] rps: optimize rps_get

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Date:	Sat, 24 Apr 2010 12:04:12 -0400
From:	jamal <hadi@...erus.ca>
To:	Changli Gao <xiaosuo@...il.com>
Cc:	David Miller <davem@...emloft.net>,
	Tom Herbert <therbert@...gle.com>,
	Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH v3] rps: optimize rps_get_cpu()

By the time you hit this code (at least on machines that make sense for
RPS), you already have the ethernet header, IP header and transport
ports in cache, no?
I think the sport << 16 shifting is avoided - but i dont think theres
any effect on mem access.

cheers,
jamal

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