On Fri, Feb 06, 2015 at 04:00:27PM +0100, Christian Borntraeger wrote:
> Am 05.02.2015 um 21:23 schrieb r...@redhat.com:
> > When running a KVM guest on a system with NOHZ_FULL enabled, and the
> > KVM guest running with idle=poll mode, we still get wakeups of the
> > rcuos/N threads.
> >
> > This
On Fri, Feb 06, 2015 at 02:50:44PM +0100, Paolo Bonzini wrote:
>
>
> On 06/02/2015 14:46, Frederic Weisbecker wrote:
> > > When running a KVM guest on a system with NOHZ_FULL enabled
> >
> > I just need to clarify the motivation first, does the above situation
> > really happen? Ok some distros
On Fri, Feb 06, 2015 at 09:56:43AM -0500, Rik van Riel wrote:
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> On 02/06/2015 08:46 AM, Frederic Weisbecker wrote:
> > On Thu, Feb 05, 2015 at 03:23:47PM -0500, r...@redhat.com wrote:
> >> When running a KVM guest on a system with NOHZ_FULL enabl
On Fri, Feb 06, 2015 at 02:50:44PM +0100, Paolo Bonzini wrote:
>
>
> On 06/02/2015 14:46, Frederic Weisbecker wrote:
> > > When running a KVM guest on a system with NOHZ_FULL enabled
> >
> > I just need to clarify the motivation first, does the above situation
> > really happen? Ok some distros
Am 05.02.2015 um 21:23 schrieb r...@redhat.com:
> When running a KVM guest on a system with NOHZ_FULL enabled, and the
> KVM guest running with idle=poll mode, we still get wakeups of the
> rcuos/N threads.
>
> This problem has already been solved for user space by telling the
> RCU subsystem that
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On 02/06/2015 08:46 AM, Frederic Weisbecker wrote:
> On Thu, Feb 05, 2015 at 03:23:47PM -0500, r...@redhat.com wrote:
>> When running a KVM guest on a system with NOHZ_FULL enabled
>
> I just need to clarify the motivation first, does the above
> situ
On 06/02/2015 14:46, Frederic Weisbecker wrote:
> > When running a KVM guest on a system with NOHZ_FULL enabled
>
> I just need to clarify the motivation first, does the above situation
> really happen? Ok some distros enable NOHZ_FULL to let the user stop
> the tick in userspace. So most of the
On Thu, Feb 05, 2015 at 03:23:47PM -0500, r...@redhat.com wrote:
> When running a KVM guest on a system with NOHZ_FULL enabled
I just need to clarify the motivation first, does the above situation
really happen? Ok some distros enable NOHZ_FULL to let the user stop
the tick in userspace. So most o
When running a KVM guest on a system with NOHZ_FULL enabled, and the
KVM guest running with idle=poll mode, we still get wakeups of the
rcuos/N threads.
This problem has already been solved for user space by telling the
RCU subsystem that the CPU is in an extended quiescent state while
running use