Re: Soft-Lockup/Race in networking in 2.6.31-rc1+195 ( possibly?caused by netem)

From: Andres Freund
Date: Mon Jul 06 2009 - 13:26:57 EST


On Monday 06 July 2009 19:23:18 Joao Correia wrote:
> Hello
>
> Since i already had the kernel compiled and ready to boot when i read
> this, i gave it a go anyway :-).
>
> I can reproduce the freeze with those 4 patches applied, so i can
> confirm that its, at least, related to, or exposed by, those patches.
> There must be something else too, or its just too much fuzziness, but
> the freeze takes a bit more time (approximately five minutes, give or
> take) compared to the instant freeze before, but its there with the
> patches, and without them, no freeze.
>
> I assume there isnt a "safe" way to get them out of current .31-rc's,
> right?
`echo 0 > /proc/sys/kernel/timer_migration` should mitigate the problem.

Andres
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/