8-STABLE freezes on UDP traffic (DNS), 7.x doesn't
bra at fsn.hu
Tue Mar 30 15:57:51 UTC 2010
Jonathan Feally wrote:
> Attila Nagy wrote:
>>>>>> Bingo, this solved the problem. The current uptime nears four days.
>>>>>> Previously I couldn't go further than a day.
>>>>>> The machine gets very light TCP load (and other machines which
>>>>>> get work
>>>>>> well), so I guess it's UDP RX or TX checksum related
> I also have had my network go dead on a recent 8.0-STABLE on bge
> system. Console is alive, but network just stops. I am running it as a
> router with untagged on bge0 and nat of traffic on vlan201 tagged on
> top of bge1. I haven't had it lock up in 3 days, but I will try the
> -txcsum and -rxcsum on both interfaces to see if the problem still
> persists or not. I do have a lot of tcp traffic, but there is also
> unsolicited udp flying in as well.
Well, it's a short time to judge from, but with rx,txcsum disabled, the
machine froze nearly instantly (less than one hour of uptime), while
with tso disabled, it still works.
So for now I think tso causes the problems.
BTW, now that we are talking about that, I remember that I've disabled
it on a lot of machines previously, because I've had strange issues.
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