Re: [PATCH tip/core/rcu 1/2] rcu: Parallelize and economize NOCB kthread wakeups

[Paul E. McKenney]

On Tue, Aug 12, 2014 at 10:57:26AM +0530, Amit Shah wrote:
> On (Mon) 11 Aug 2014 [13:34:21], Paul E. McKenney wrote:
> > On Tue, Aug 12, 2014 at 01:48:45AM +0530, Amit Shah wrote:

[ . . . ]

> > > > In addition "sendkey alt-sysrq-t" at the "(qemu)" prompt dumps all tasks'
> > > > stacks, which would also likely be useful information.
> > > 
> > > Nah, this doesn't work -- the guest's totally locked up.  I need a way
> > > to continuously dump buffers till the lockup happens, I suppose.
> > 
> > That is a bit surprising.  Is it possible that the system is OOMing
> > quickly due to grace periods not proceeding?  If so, maybe giving the
> > VM more memory would help.
> 
> I bumped it up to 1G and then 2G, same result.

OK.  I am then back at making the system dump core.

							Thanx, Paul

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