netdev - Re: [PATCH 4/5] r8169: more alignment for the 0x8168

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Message-ID: <20070213081439.GA21261@electric-eye.fr.zoreil.com>
Date:	Tue, 13 Feb 2007 09:14:39 +0100
From:	Francois Romieu <romieu@...zoreil.com>
To:	Philip Craig <philipc@...pgear.com>
Cc:	Jeff Garzik <jeff@...zik.org>, netdev@...r.kernel.org,
	isely@...ox.com
Subject: Re: [PATCH 4/5] r8169: more alignment for the 0x8168

Philip Craig <philipc@...pgear.com> :
[...]
> This patch caused a drop in throughput from 178 Mbits/sec to 135 Mbits/sec
> on an Intel XScale IXP465.

Which distribution of packet sizes ?

> It seems like there is some confusion about what the align parameter
> here means. It was originally an offset from an aligned address so that
> the IP header aligned, and this patch changes it to the alignment of the
> ethernet header. But align is still set to NET_IP_ALIGN for some chips.

Yes, I should have distinguished both in the first place.

Can you describe which chipset from realtek the board is using (lspci -vxx) ?

-- 
Ueimor
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