❦ 10 septembre 2015 13:56 +0200, Lucas Nussbaum <[email protected]> :
>> > Dmesg output during the hangs:
>> > [ 876.069592] e1000e 0000:00:19.0 eth0: Detected Hardware Unit Hang:
>>
>> You can try disabling some of the offloading functions:
>>
>> ethtool -K eth0 tso off gro off gso off lro off
>
> Yes, I saw that mentioned somewhere. But I haven't tried yet. And it's
> not really a suitable long-term fix. :)
> If that helps to understand the root issue, I can try that next week or
> the week after (but the machine is in production now, so it's not that
> easy).
Whatever the result is, it's just a workaround. The "Detected Hardware
Unit Hang" error is quite generic and I have never found a way to get a
probable root cause.
It depends on how much you need those offload features. Disabling them
will reduce the performance but also will prevent a whole class of
problems from happening (bugs or pacing-related).
--
Must I hold a candle to my shames?
-- William Shakespeare, "The Merchant of Venice"
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