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

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)

[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

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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