[Xen-devel] rcu_sched self-detected stall on CPU on kernel 4.4.5 in PV DomU

2016-03-19 Thread Steven Haigh
Hi all, I've noticed the following problem that ends up with a non-repsonsive PV DomU using kernel 4.4.5 under heavy disk IO: INFO: rcu_sched self-detected stall on CPU 0-...: (6759098 ticks this GP) idle=cb3/141/0 softirq=3244615/3244615 fqs=4 (t=6762321 jiffies

Re: [Xen-devel] rcu_sched self-detected stall on CPU on kernel 4.4.5 in PV DomU

2016-03-19 Thread Steven Haigh
Hi all, So I'd just like to give this a prod. I'm still getting DomU's randomly go to 100% CPU usage using kernel 4.4.6 now. It seems running 4.4.6 as the DomU does not induce these problems. Latest crash message from today: INFO: rcu_sched self-detected stall on CPU 0-...: (20869552

Re: [Xen-devel] rcu_sched self-detected stall on CPU on kernel 4.4.5 in PV DomU

2016-03-19 Thread Steven Haigh
On 19/03/2016 8:40 AM, Steven Haigh wrote: > Hi all, > > So I'd just like to give this a prod. I'm still getting DomU's randomly > go to 100% CPU usage using kernel 4.4.6 now. It seems running 4.4.6 as > the DomU does not induce these problems. Sorry - slight correction. Running 4.4.6 as the