netdev - Re: linux-3.0.18+r8169+ipv4/tcp forwarding = tso/gso weirdness and performance degration

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Message-ID: <20120314205319.GA28394@electric-eye.fr.zoreil.com>
Date:	Wed, 14 Mar 2012 21:53:19 +0100
From:	Francois Romieu <romieu@...zoreil.com>
To:	Timo Teras <timo.teras@....fi>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Ben Hutchings <bhutchings@...arflare.com>,
	netdev@...r.kernel.org
Subject: Re: linux-3.0.18+r8169+ipv4/tcp forwarding = tso/gso weirdness and performance degration

Timo Teras <timo.teras@....fi> :
[...]
> # ethtool -S eth2
> NIC statistics:
>      tx_packets: 2069391193
>      rx_packets: 3245815642
>      tx_errors: 0
>      rx_errors: 645238
>      rx_missed: 31414

It does not look like stuff for the higher layers guys.

Can you tshark -w foobar on the sender side and
'while : ; do sleep 1; ethtool -S eth2 >> glop; done' on the receiver
during a bad wget (a big zero filled file should compress well).

-- 
Ueimor
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