Re: nfs server lockup (again)

[David Holland <dholland-tech%netbsd.org@localhost>]

On Fri, Jun 24, 2011 at 12:11:22PM +0200, Manuel Bouyer 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).

without looking at the code (today) I'm wondering if it would be
feasible to have callout_schedule panic if the head of the callout
queue is more than, say, one second in the past. Maybe only for
DIAGNOSTIC kernels?

-- 
David A. Holland
dholland%netbsd.org@localhost