On Thu, Feb 11, 2016 at 11:46 AM, Jaggi, Manish <Manish.Jaggi@xxxxxxxxxxxxxxxxxx> wrote: > Thanks Josh. > I tried both options > a) replace prempt_XXX with migrate_XXX as per the patch > b) replacing spin_lock in kvm_vgic_flush_hwstate with raw_spin_lock > > Host and guest has NO_HZ_FULL=y > The cyclictest avg latency / max latency are very high in guest. > > host: Avg: 28 Max: 180 > guest: Avg: 168 Max: 19532 > > Running guest within a cset created with -k option > Our interrupt delivery slowdown is quite high due to the expensive world-switch path on KVM/ARM. Marc (cc'ed) recently did some optimizations in this area which may be worth looking at. -Christoffer -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
