netdev - Re: [PATCH 1/2] rps: core implementation

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Message-Id: <20091120.145224.181250500.davem@davemloft.net>
Date:	Fri, 20 Nov 2009 14:52:24 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jarkao2@...il.com
Cc:	therbert@...gle.com, netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] rps: core implementation

From: Jarek Poplawski <jarkao2@...il.com>
Date: Thu, 19 Nov 2009 08:08:31 +0000

> On 16-11-2009 17:43, Tom Herbert wrote:
>> NET_RPS_SOFTIRQ is intended to provide coalescing of IPIs.
> 
> It seems calling net_rps_action() at the end of net_rx_action() should
> do (mostly) the same, at least for napi drivers. And I'm not sure it's
> worth to add a new softirq because of non-napis.

I agree.  This is how we handle all of these kinds of issues.

And with GRO, any arguable latency problem this may have you're
going to eat most of the time anyways.
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