Brandeburg, Jesse wrote:
> Hi Jesper,
>
> On Sun, 5 Apr 2009, Jesper Krogh wrote:
>> I have a 2.6.27.20 system in production, the e1000 drivers seem pretty
>> "noisy" allthough everything appears to work excellent.
>
> well, nice to hear its working, but wierd about the messages.
>
>> dmesg here: http://krogh.cc/~jesper/dmesg-ko-2.6.27.20.txt
>>
>> [476197.380486] e1000: eth3: e1000_clean_tx_irq: Detected Tx Unit Hang
>> [476197.380488] Tx Queue <0>
>> [476197.380489] TDH <c>
>> [476197.380490] TDT <63>
>> [476197.380490] next_to_use <63>
>> [476197.380491] next_to_clean <b>
>> [476197.380491] buffer_info[next_to_clean]
>> [476197.380492] time_stamp <10717579a>
>> [476197.380492] next_to_watch <f>
>> [476197.380493] jiffies <107175a3e>
>> [476197.380494] next_to_watch.status <0>
>>
>> The system has been up for 14 days but the dmesg-buffer has allready
>> overflown with these.
>
> I looked at your dmesg and it appears that there is never a
> NETDEV_WATCHDOG message, which would normally indicate that the driver
> isn't resetting itself out of the problem. Does ethtool -S eth3 show any
> tx_timeout_count ?
$ for i in 0 1 2 3; do sudo ethtool -S eth${i} | grep tx_timeout_count; done
tx_timeout_count: 6
tx_timeout_count: 3
tx_timeout_count: 14
tx_timeout_count: 23
>> Configuratoin is a 4 x 1GbitE bond all with Intel NICs
>>
>> 06:01.0 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet
>> Controller (Copper) (rev 03)
>> 06:01.1 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet
>> Controller (Copper) (rev 03)
>> 06:02.0 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet
>> Controller (Copper) (rev 03)
>> 06:02.1 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet
>> Controller (Copper) (rev 03)
>
> are you doing testing with the remote end of this link? I'm wondering if
> something changed in the kernel that is causing remote link down events to
> not stop the tx queue (our hardware just completely stops in its tracks
> w.r.t tx when link goes down)
They are connected directly to a switch stack. I'd be surprised if there
is anything in there that does magic. I have around 100 other cables
into that one.
--
Jesper
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