Re: [tip:sched/core] [sched] 2ae891b826: hackbench.throughput 6.2% regression

[Qais Yousef]

On 02/25/25 21:15, Chen Yu wrote:
> On 2025-02-25 at 13:27:05 +0100, Peter Zijlstra wrote:
> > On Tue, Feb 25, 2025 at 05:31:34PM +0800, Chen Yu wrote:
> > 
> > > 
> > > But consider that the 6% regression is not that high, and the user might customize
> > > base_slice via debugfs on-demand, we can keep an eye on this and revist it in the
> > > future(we have encountered some SPECjbb regression due to over-preemption).
> > 
> > You can specify a per-task slice using sched_attr::sched_runtime. Also
> > see commit 857b158dc5e8 ("sched/eevdf: Use sched_attr::sched_runtime to
> > set request/slice suggestion")
> > 
> >
> 
> Thanks, we'll have a try during the next test cycle.

Could you also try with HRTICK enabled?

	echo HRTICK | sudo tee /sys/kernel/debug/sched/features