It's steal, not stall - time "stolen" by the hypervisor, i.e. when you have runnable threads but the CPU is busy servicing other VMs. This can lead to stalling

It's steal, not stall - time "stolen" by the hypervisor, i.e. when you have runnable threads but the CPU is busy servicing other VMs. This can lead to stalling of your software, I guess, but it has nothing to do with instruction stalls.