linux-kernel - Re: Mass udp flow reboot linux with RealTek RTL-8169 Gigabit

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Date:	Fri, 18 Feb 2011 10:30:00 +0100
From:	Francois Romieu <romieu@...zoreil.com>
To:	Seblu <seblu@...lu.net>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	lkml <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>, Ivan Vecera <ivecera@...hat.com>
Subject: Re: Mass udp flow reboot linux with RealTek RTL-8169 Gigabit

Seblu <seblu@...lu.net> :
[...]
> I've applyed your patch on 2.6.38-rc5. Host have rebooted 2mn after udp start.
> After this reboot, host is still on after 2 hour under a 1Gbit/s udp flow.

Thanks for testing.

> I attached a dmesg output before reboot. Do you need anything else?

Mostly :
1. .config
2. the size of the udp packets and the mtu

As an option :
3. a few seconds of 'vmstat 1' from the host under test
4. an 'ethtool -s eth0' from the host under test
5. /proc/interrupts from the host under test
6. lspci -tv 

Can you apply the two attached patches on top of the previous ones and
give it a try ? The debug should not be too verbose if things are stationary
enough.

Do you have a serial cable and a second computer at hand by chance (don't
go for netconsole with the r8169 driver) ?

-- 
Ueimor

View attachment "0001-r8169-TX-stop-queue-race-fix.patch" of type "text/plain" (1129 bytes)

View attachment "0002-r8169-debuginator.patch" of type "text/plain" (857 bytes)