On Wed, Nov 30, 2016 at 10:14:50AM -0800, Linus Torvalds wrote:
> Anyway, none of this seems new per se. I'm adding Kent and Jens to the
> cc (Tejun already was), in the hope that maybe they have some idea how
> to control the nasty worst-case behavior wrt workqueue lockup (it's
> not really a "lockup", it looks like it's just hundreds of workqueues
> all waiting for IO to complete and much too deep IO queues).
I'll take your word for it, all I got in the end was
Kernel panic - not syncing: Hard LOCKUP
and the system stone dead when I woke up hours later.
> And I think your NMI watchdog then turns the "system is no longer
> responsive" into an actual kernel panic.
Ah, I see.
Thanks for the reply, and sorry for bringing in that separate thread
from the btrfs mailing list, which effectively was a suggestion similar
to what you're saying here too.
Marc
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.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/ | PGP 1024R/763BE901
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