Messages in this thread | | | Date | Wed, 16 Mar 2022 18:05:52 +0100 | From | Sebastian Andrzej Siewior <> | Subject | Re: sched_core_balance() releasing interrupts with pi_lock held |
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On 2022-03-16 17:18:41 [+0100], To Steven Rostedt wrote: > on top my problems are gone. Let me do some testing and then I would > patch unless PeterZ does the yelling :)
so the long irq-off section is latency wise less than optimal. A testcase went from ~40 to 140us. And then there is this: | NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! | NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #10!!!
which might be RT-only. I *think* we want first the buggy part gone and then the latency fixed.
> > > Thanks, > > > > > > -- Steve
Sebastian
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