netdev - Re: Getting physical packet counts with LRO enabled with ixgbe?

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Message-ID: <20090925220115.GA3684@gondor.apana.org.au>
Date:	Fri, 25 Sep 2009 15:01:15 -0700
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	greearb@...delatech.com, peter.p.waskiewicz.jr@...el.com,
	netdev@...r.kernel.org
Subject: Re: Getting physical packet counts with LRO enabled with ixgbe?

On Fri, Sep 25, 2009 at 02:59:15PM -0700, David Miller wrote:
> From: Ben Greear <greearb@...delatech.com>
> Date: Fri, 25 Sep 2009 14:50:44 -0700
> 
> > I get aggregate 18Gbps with LRO v/s 12Gbps without, so it's very
> > much a useful feature for me.
> 
> And it'll stay like that until you work with Herbert to fix
> that performance difference.

Actually I believe he's talking about hardware LRO which is a
different beast.

AFAICS the ixgbe driver doesn't use software LRO anymore.

So if it is hardware LRO then what we need is for the hardware
to switch over :)

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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