The Linux Plumbers Conference blog has
a report from the sched_ext microconference held in Prague.
Three main topics dominated the discussions - Priority inversion and how to handle it in sched_ext: lock holder and lock waiter preemption, time slice extension, and making proxy execution work together with BPF schedulers.
- Paravirtualized scheduling: letting the host and guest schedulers cooperate across the VM boundary, with sched_ext as the policy engine on the host.
- Device and topology-aware scheduling: using hardware feedback (Intel HFI), device/accelerator locality and cache topology to drive task placement.
