On Fri, May 18, 2018 at 9:30 AM, Chris Murphy <lists(a)colorremedies.com> wrote:
On Fri, May 18, 2018 at 7:12 AM, Justin Forbes
<jforbes(a)redhat.com> wrote:
> On Thu, May 17, 2018 at 4:25 PM, Chris Murphy <lists(a)colorremedies.com>
> wrote:
>>
>> Hi,
>>
>> This seems newish, maybe 4.16 debug kernels were doing it also, but
>> I've seen if for all of 4.17. But what's new, I think, with
>> 4.17.0-0.rc5.git1.1.fc29.x86_64 is I'm seeing a 4 kidle_inject threads
>> each using around 20% CPU per top, and the everything is sluggish, the
>> mouse arrow jerks around on screen, and apps aren't responsive.
>>
>> I'm not sure where to start with troubleshooting; my first thought is
>> to just wait for rc6 and see if it's still happening.
>>
> Is this only visible in debug kernels, or do non debug kernels do it as
> well?
Only debug kernels so far. I had been using 4.17.0-0.rc4.git4.1 most
of this week with the powerclamp messages, but never the slow down and
without the kinject threads running. 4.17.0-0.rc5.git1.1 is the first
with powerclamp messages, slow downs, and kinject threads running. The
slow down coincides with kinjects, and when those go away, the
sluggishness goes away also.
I'm going to run 4.16.9 today.
On 4.16.9 today. But no kinject threads spun up, no slow downs. Or
possibly I just didn't notice it.
May 18 12:28:23 f28h.local kernel: intel_powerclamp: Start idle
injection to reduce power
May 18 12:28:24 f28h.local kernel: NOHZ: local_softirq_pending 80
May 18 12:28:25 f28h.local kernel: NOHZ: local_softirq_pending 80
May 18 12:28:25 f28h.local kernel: NOHZ: local_softirq_pending 80
May 18 12:28:25 f28h.local kernel: NOHZ: local_softirq_pending 80
May 18 12:28:25 f28h.local kernel: NOHZ: local_softirq_pending 01
May 18 12:28:25 f28h.local kernel: NOHZ: local_softirq_pending 80
May 18 12:28:26 f28h.local kernel: NOHZ: local_softirq_pending 80
May 18 12:28:26 f28h.local kernel: NOHZ: local_softirq_pending 80
May 18 12:28:26 f28h.local kernel: NOHZ: local_softirq_pending 80
May 18 12:28:27 f28h.local kernel: NOHZ: local_softirq_pending 80
May 18 12:29:20 f28h.local kernel: intel_powerclamp: Stop forced idle injection
--
Chris Murphy