Re: [PATCH 1/4] sched/fair: Be less aggressive in calling cpufreq_update_util()

From: Lukasz Luba
Date: Fri Dec 08 2023 - 05:04:48 EST


Hi Qais,

On 12/8/23 01:52, Qais Yousef wrote:

[snip]

@@ -6704,14 +6677,6 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags)
*/
util_est_enqueue(&rq->cfs, p);
- /*
- * If in_iowait is set, the code below may not trigger any cpufreq
- * utilization updates, so do it here explicitly with the IOWAIT flag
- * passed.
- */
- if (p->in_iowait)
- cpufreq_update_util(rq, SCHED_CPUFREQ_IOWAIT);
-

Why this io wait boost is considered as the $subject says 'aggressive'
calling?

Regards,
Lukasz