3 ms·

The cloud vendors (at least the ones I checked) have SKUs with fairly limited downclocking, but more importantly the license based downclocking is per-core. So

The cloud vendors (at least the ones I checked) have SKUs with fairly limited downclocking, but more importantly the license based downclocking is per-core. So as long as you get at least a core to yourself, the noisy neighbor problem is reduced in that you affect your own CPU speed only. For more fine-grained sharing, sure, if the key before you was running AVX-512 you'll get a lower frequency for the initial part of your timeslice, but it should pop back to full speed in under 1 ms.

kristianp 6y ago
Do the cloud vendors pin their VMs to a core to achieve this?
- BeeOnRope 6y ago
  Something like that, for the ones that dedicate at least a core per tenant. This also reduces the chance of cross-tenant information leakage. Of course there are lots of scenarios where this isn't the case.