On Tue, Jan 30, 2018 at 10:03:17PM +0100, Thomas Gleixner wrote:
> On Mon, 29 Jan 2018, Paul E. McKenney wrote:
>
> > On Mon, Jan 29, 2018 at 01:57:38AM -0800, Paul E. McKenney wrote:
> > > On Mon, Jan 29, 2018 at 09:20:48AM +0100, Sebastian Sewior wrote:
> > > > On 2018-01-26 14:09:17 [-0800], Pa
On Mon, 29 Jan 2018, Paul E. McKenney wrote:
> On Mon, Jan 29, 2018 at 01:57:38AM -0800, Paul E. McKenney wrote:
> > On Mon, Jan 29, 2018 at 09:20:48AM +0100, Sebastian Sewior wrote:
> > > On 2018-01-26 14:09:17 [-0800], Paul E. McKenney wrote:
> > > > find this one. ;-) But it did pass rcutortu
On Mon, Jan 29, 2018 at 01:57:38AM -0800, Paul E. McKenney wrote:
> On Mon, Jan 29, 2018 at 09:20:48AM +0100, Sebastian Sewior wrote:
> > On 2018-01-26 14:09:17 [-0800], Paul E. McKenney wrote:
> > > find this one. ;-) But it did pass rcutorture testing for a great many
> > > years, didn't it? :
On Mon, Jan 29, 2018 at 09:20:48AM +0100, Sebastian Sewior wrote:
> On 2018-01-26 14:09:17 [-0800], Paul E. McKenney wrote:
> > find this one. ;-) But it did pass rcutorture testing for a great many
> > years, didn't it? :-/
>
> It started to trigger better (or at all) on our test box with
>
On 2018-01-26 14:09:17 [-0800], Paul E. McKenney wrote:
> find this one. ;-) But it did pass rcutorture testing for a great many
> years, didn't it? :-/
It started to trigger better (or at all) on our test box with
modprobe kvm_intel preemption_timer=n
on the host kernel so maybe a com
On Fri, Jan 26, 2018 at 02:09:17PM -0800, Paul E. McKenney wrote:
> On Fri, Jan 26, 2018 at 02:54:32PM +0100, Thomas Gleixner wrote:
> > The hrtimer interrupt code contains a hang detection and mitigation
> > mechanism, which prevents that a long delayed hrtimer interrupt causes a
> > continous ret
On Fri, Jan 26, 2018 at 02:54:32PM +0100, Thomas Gleixner wrote:
> The hrtimer interrupt code contains a hang detection and mitigation
> mechanism, which prevents that a long delayed hrtimer interrupt causes a
> continous retriggering of interrupts which prevent the system from making
> progress. I
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