On Thu, 07 Sep 2023 21:27:12 +0100, Joey Gouly <joey.gouly@xxxxxxx> wrote: > > On Thu, Sep 07, 2023 at 07:17:03PM +0100, Marc Zyngier wrote: > > On Thu, 07 Sep 2023 16:30:52 +0100, > > Joey Gouly <joey.gouly@xxxxxxx> wrote: > > > > [...] > > > > > Got a roughly similar perf improvement (about 28%). > > > > Out of curiosity, on which HW? > > I used QEMU emulation, but was told after posting this that QEMU is probably > not good to be used for perf measurments? Sorry about that. I can retry on Juno > tomorrow if that's of any use. Indeed, using models for performance measurement is pretty unreliable, and will give you a rather different profile from the HW. Unfortunately, Juno has only a GICv2, which won't see any significant gain. You'll need something with a GICv3, as the whole interrupt routing (SGI and SPI) is MPIDR based. Thanks, M. -- Without deviation from the norm, progress is not possible.
