netdev - RE: Extremely bad performance with RTL8111/8168B

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Message-ID: <88C0E945471D46EEA556B43C7EB384AB@realtek.com.tw>
Date:	Tue, 9 Jul 2013 10:24:20 +0800
From:	hayeswang <hayeswang@...ltek.com>
To:	'Francois Romieu' <romieu@...zoreil.com>,
	'Eric Dumazet' <eric.dumazet@...il.com>
CC:	'Pavel Machek' <pavel@....cz>, <netdev@...r.kernel.org>,
	'nic_swsd' <nic_swsd@...ltek.com>
Subject: RE: Extremely bad performance with RTL8111/8168B

Francois Romieu [mailto:romieu@...zoreil.com] 
> Sent: Tuesday, July 09, 2013 6:02 AM
> To: Eric Dumazet
> Cc: Pavel Machek; Hayeswang; netdev@...r.kernel.org
> Subject: Re: Extremely bad performance with RTL8111/8168B
> 
> Eric Dumazet <eric.dumazet@...il.com> :
> [8168d failure]
> > It looks like TSO packets are not transmitted, so TCP only 'works'
> > because retransmits use non TSO packets.
> > 
> > Could you report "ethtool -k eth0" ?
> > 
> > try : ethtool -K eth0 tso off
> 
> If so it could be worth adding a test for RTL_GIGA_MAC_VER_25 in
> rtl_test_hw_pad_bug as has been done for RTL_GIGA_MAC_VER_34 (see
> b423e9ae49d78ea3f53b131c8d5a6087aed16fd6).

I don't think it is necessary for RTL_GIGA_MAC_VER_25. I don't find any issue
about checksum or TSO for 8111d yet.
 
Best Regards,
Hayes


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