On Fri, Nov 17, 2023 at 09:07:55PM +0800, Abel Wu wrote: > On 11/17/23 8:37 PM, Peter Zijlstra Wrote: [...] > > Ah, so if this is a cgroup issue, it might be worth trying this patch > > that we have in tip/sched/urgent. > > And please also apply this fix: > https://lore.kernel.org/all/20231117080106.12890-1-s921975628@xxxxxxxxx/ > We applied both suggested patch options and ran the test again, so sched/eevdf: Fix vruntime adjustment on reweight sched/fair: Update min_vruntime for reweight_entity() correctly and sched/eevdf: Delay dequeue Unfortunately, both variants do NOT fix the problem. The regression remains unchanged. I will continue getting myself familiar with how cgroups are scheduled to dig deeper here. If there are any other ideas, I'd be happy to use them as a starting point for further analysis. Would additional traces still be of interest? If so, I would be glad to provide them. [...]
