Sep 9 – 11, 2019
Europe/Lisbon timezone

Performance guarantees under thermal pressure

Sep 10, 2019, 3:25 PM
Esmerelda/room-I&II (Corinthia Hotel Lisbon)


Corinthia Hotel Lisbon



Morten Rasmussen (Arm)


Performance capping due to thermal limitations is common scenario particularly in mobile systems. Today user-space has no information about what level of performance that can be expected worst case and SCHED_DEADLINE can admit reservations which are impossible to fulfill.
The purpose of the this topic is to discuss what level guarantees the kernel should provide. Should the kernel have a platform specific or tunable sustained performance level?

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