Re: [Xen-devel] x86_64 eth0 e1000_clean_tx_irq tx hang

[Christian Leber <christian@xxxxxxxx>]

On Wed, Feb 08, 2006 at 11:36:06PM -0000, Ian Pratt wrote:

> For this bug it might actually be helpful to start collecting
> information about the hardware it's observed on.
> 
> For us, the bug is hard to repro, despite us having tried on several
> different machines (2 and 4 way SMP, Opteron and Xeon, tg3 and e1000
> NICs).

It's not on Xen, but i get something similar with scp:
(and this Tx Unit Hang seems to be a seldom problem)
(2.6.15)

[4294726.019000] e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang
[4294726.019000] TDH <cb>
[4294726.019000] TDT <cb>
[4294726.019000] next_to_use <cb>
[4294726.019000] next_to_clean <df>
[4294726.019000] buffer_info[next_to_clean]
[4294726.019000] dma <1aa25cce>
[4294726.019000] time_stamp <fffc40e7>
[4294726.019000] next_to_watch <df>
[4294726.019000] jiffies <fffc5183>
[4294726.019000] next_to_watch.status <0>

That happens on AthlonXP+ViaKT600 but not on Intel PIII with Intel 815
chipset.
https://launchpad.net/distros/ubuntu/+source/linux-source-2.6.15/+bug/30476


Christian Leber

-- 
  "Omnis enim res, quae dando non deficit, dum habetur et non datur,
   nondum habetur, quomodo habenda est."       (Aurelius Augustinus)
  Translation: <http://gnuhh.org/work/fsf-europe/augustinus.html>

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