netdev - Re: [PATCH v6] net: batch skb dequeueing from softnet input_pkt

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Date:	Mon, 3 May 2010 00:06:42 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	David Miller <davem@...emloft.net>, hadi@...erus.ca,
	xiaosuo@...il.com, therbert@...gle.com, shemminger@...tta.com,
	netdev@...r.kernel.org, lenb@...nel.org
Subject: Re: [PATCH v6] net: batch skb dequeueing from softnet
	input_pkt_queue

> But a task blocked on disk IO is probably blocked for a small amount of
> time, while on network, it can be for a long time. I am not sure its the
> right metric.

I think it needs a dynamic timeout.

I agree the reference count as is will not work well for networking.

> 
> I was expecting something based on recent history.
> Say if we have 20.000 wakeups per second, most likely we should not
> enter C2/C3 states...

That's what the menu governour already does, it just doesn't work
in some cases :/

-Andi

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