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Date: Tue, 1 Jul 2008 12:07:40 +0800
From: "Adrian Chadd" <adrian@freebsd.org>
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To: "Sepherosa Ziehau" <sepherosa@gmail.com>
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Cc: freebsd-net@freebsd.org, Paul <paul@gtcomm.net>
Subject: Re: Freebsd IP Forwarding performance (question,
	and some info) [7-stable, current, em, smp]
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2008/7/1 Sepherosa Ziehau <sepherosa@gmail.com>:


> Properly configured #RX desc and timer intr interval will be required
> to make sure that the RX desc collection could keep up with the
> hardware speed.  I used pure timer intr (8000Hz) on nfe(4) in dfly w/
> good result, i.e. TX/RX @linespeed without livelocking the system.
> The drawback of pure timer intr is that you waste extra cpu power,
> when there is nothing to process.

What packet rate is "linespeed" ? With what size packets?



arian