netdev - Re: [PATCH] bnx2x: add support for receive hashing

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Message-Id: <20100427.100602.52191517.davem@davemloft.net>
Date:	Tue, 27 Apr 2010 10:06:02 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	bmb@...enacr.com
Cc:	therbert@...gle.com, eric.dumazet@...il.com,
	netdev@...r.kernel.org, rick.jones2@...com
Subject: Re: [PATCH] bnx2x: add support for receive hashing

From: Brian Bloniarz <bmb@...enacr.com>
Date: Tue, 27 Apr 2010 13:02:08 -0400

> Maybe I'm misunderstanding... won't it distribute the
> packet handling load to multiple cores, but then all
> those cores will contend trying to deliver those packets
> to the single socket?
> 
> I was assuming that this'd be a net loss over just doing
> all the protocol handling on a single core. I haven't
> done any benchmarks yet.

Whether it's a new loss depends upon the application.

Also, on the non-application side f.e. a router or firewall, this is
exactly the behavior you want.
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