Comment by amelius
5 hours ago
Without the hyperthreading (E-cores) you get more consistent performance between running tasks, and cloud providers like this because they sell "vCPUs" that should not fluctuate when someone else starts a heavy workload.
Sort of. They can just sell even numbers of vCPUs, and dedicate each hyper-thread pair to the same tenant. That prevents another tenant from creating hyper-threading contention for you.
OP is probably talking about shared vCPUs, not dedicated
For those, wouldn't hyperthreading be a win? Some fraction of the time, you'd get evicted to the hyperthread that shares your L1 cache (and the hypervisor could strongly favor that).