Re: [PATCH v2 6/8] kvm tools: Add rwlock wrapper

Sasha Levin
2011-06-15T01:25:27Z

On Tue, 2011-06-14 at 16:42 -0700, Paul E. McKenney wrote:
> On Tue, Jun 14, 2011 at 06:26:01PM -0400, Sasha Levin wrote:
> > Sorry for the delay on this.
>
> Actually, you might have had excellent timing on this one.
>
> Could you please try Shaohua Li's patch at:
>
> https://lkml.org/lkml/2011/6/14/20
>
> This patch makes RCU much less prone to causing massive scheduler lock
> contention, which might well be the cause of the problems that you
> are seeing.

This patch has solved the hang issue I've had. kvm tools now boots 60
vcpus easily with 3.0 kernel.

--

Sasha.