Avi Kivity wrote:
André Przywara wrote:
But I wouldn't load the admin with the burden of pinning, but let
this be done by QEMU/KVM. Maybe one could introduce a way to tell
QEMU/KVM to not pin the threads.
This is where things start to get ugly...
Why? qemu-system-x86_64 -numa 2,pin:none and then use whatever method
you prefer (taskset, monitor) to pin the VCPUs (or left them unpinned).
I agree that for e.g. -numa 2, no host binding should occur. Pinning
memory or cpus to nodes should only occur if the user explicitly
requested it. Otherwise we run the risk of breaking load balancing.
If the user chooses to pin, the responsibility is on them. If not, we
should allow the host to do its thing.
Agreed.
Regards,
Anthony Liguori
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