Re: [RFC PATCH 0/4] Gang scheduling in CFS

[Nikunj A Dadhania]

On Mon, 19 Dec 2011 13:44:02 +0200, Avi Kivity <avi@xxxxxxxxxx> wrote:
> On 12/19/2011 01:23 PM, Ingo Molnar wrote:
> > What's behind this huge speedup? Does ebizzy use user-space 
> > spinlocks perhaps? Could we do something on the user-space side 
> > to get a similar speedup?
> 
> kvm tries to detect spinlocks (by trapping repeated executions of PAUSE)
> and yield to a related vcpu.  It's far from perfect however, and relies
> on the spinlock code using PAUSE.
> 
Avi, is this soft-PLE kind of thing?

Regards
Nikunj

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/