On Fri, May 18, 2018 at 7:34 PM, Chris Murphy <lists(a)colorremedies.com> wrote:
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
Oh and this is 4.16.9-300.fc28.x86_64, no debug.
--
Chris Murphy