Re: nfs server lockup (again)

[Hisashi T Fujinaka <htodd%twofifty.com@localhost>]

On Fri, 24 Jun 2011, Manuel Bouyer wrote:

> On Fri, Jun 24, 2011 at 08:14:00AM -0700, Hisashi T Fujinaka wrote:
> > On Fri, 24 Jun 2011, Manuel Bouyer wrote:
> >
> > > On Thu, Jun 23, 2011 at 06:06:14PM +0000, David Holland wrote:
> > > > I've been thinking that the nfs client problems I've been seeing,
> > > > which seem to be callout-related, are maybe connected, as could be the
> > > > odd problem mrg has been having with raidframe.
> > > >
> > > > Do we have a debug hook or other method that will raise a panic if
> > > > callouts stop getting processed?
> > >
> > > unfortunably, no (AFAIK).
> >
> > My system has been hanging on heavy disk usage (my endless compiles) and
> > I just noticed that one of the CPUs is pinned in rpc.something according
> > to the top of "top" though it doesn't show up in the list below.
> >
> > So I'm not sure what's happening (I haven't been following) but I'm
> > seeing issues on an amd64-current system.
>
> To see if it's the problem you'll need to enter ddb and see what the
> per-cpu soft interrupt threads are doing.

OK, do I need to add kernel debugging, etc? I've done this in the past
but it's been a while.

--
Hisashi T Fujinaka - htodd%twofifty.com@localhost
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte