Hi,
On 08/04/2022 12:01, Roger Pau Monné wrote:
I could add a suitable dom0_max_vcpus parameter to osstest. XenServer
uses 16 for example.
I'm afraid a fixed number won't do, the more that iirc there are
systems with just a few cores in the pool (and you don't want to
over-commit by default).
But this won't over commit, it would just assign dom0 16 vCPUs at
most, if the system has less than 16 vCPUs that's what would be
assigned to dom0.
AFAICT, this is not the case on Arm. If you ask 16 vCPUs, then you will
get that number even if there are 8 pCPUs.
In fact, the documentation of dom0_max_vcpus suggests that the numbers
of vCPUs can be more than the number of pCPUs.
Cheers,
--
Julien Grall
