Messages in this thread | | | Date | Fri, 22 Jul 2022 11:30:53 +0800 | Subject | Re: [PATCH 9/9] sched/psi: add PSI_IRQ to track IRQ/SOFTIRQ pressure | From | Abel Wu <> |
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Hi Chengming,
On 7/21/22 12:04 PM, Chengming Zhou Wrote: > Now PSI already tracked workload pressure stall information for > CPU, memory and IO. Apart from these, IRQ/SOFTIRQ could have > obvious impact on some workload productivity, such as web service > workload. > > When CONFIG_IRQ_TIME_ACCOUNTING, we can get IRQ/SOFTIRQ delta time > from update_rq_clock_task(), in which we can record that delta > to CPU curr task's cgroups as PSI_IRQ_FULL status.
The {soft,}irq affection should be equal to all the runnable tasks on that cpu, not only rq->curr. Further I think irqstall is per-cpu rather than per-cgroup.
Abel
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