Messages in this thread | | | Date | Mon, 29 Jun 2020 14:42:08 +0200 | From | Frederic Weisbecker <> | Subject | Re: [RFC PATCH] tick/sched: update full_nohz status after SCHED dep is cleared |
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On Mon, Jun 29, 2020 at 02:36:51PM +0200, Juri Lelli wrote: > Hi, > > On 16/06/20 22:46, Frederic Weisbecker wrote: > > On Tue, Jun 16, 2020 at 08:57:57AM +0200, Juri Lelli wrote: > > > Sure. Let me know if you find anything. > > > > I managed to reproduce. With "threadirqs" and without > > "tsc=reliable". I see tons of spurious TIMER softirqs. > > Investigation begins! I'll let you know. > > Gentle ping. Any new findings about this issue?
Yep, I'm working on a series to reduce timer softirqs. I'm almost done, should post it soon.
I believe you guessed right:
* Timer tick raises timer softirq * Ksoftirqd wakes up, restarts the tick * Timer tick raises timer softirq * ...
Thanks.
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