netdev - Re: [ofa-general] Re: [PATCH 2/3][NET

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Date:	Wed, 10 Oct 2007 18:02:11 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>
Cc:	David Miller <davem@...emloft.net>, andi@...stfloor.org,
	hadi@...erus.ca, shemminger@...ux-foundation.org, jeff@...zik.org,
	johnpol@....mipt.ru, herbert@...dor.apana.org.au,
	gaagaan@...il.com, Robert.Olsson@...a.slu.se,
	netdev@...r.kernel.org, rdreier@...co.com, mcarlson@...adcom.com,
	jagana@...ibm.com, general@...ts.openfabrics.org,
	mchan@...adcom.com, tgraf@...g.ch, randy.dunlap@...cle.com,
	sri@...ibm.com, kaber@...sh.net
Subject: Re: [ofa-general] Re: [PATCH 2/3][NET_BATCH] net core use batching

> We've done similar testing with ixgbe to push maximum descriptor counts,
> and we lost performance very quickly in the same range you're quoting on
> NIU.

Did you try it with WC writes to the ring or CLFLUSH?

-Andi
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