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On 2024-07-02 14:09, greg zegan via PLUG-discuss wrote:
speaking of VMs I see they are migrating from VMWare to OpenShift from
Red Hat at work.
Anyone know more about this? Is it cost based?
no one is saying why here.
On Tuesday, July 2, 2024 at 02:05:11 PM MST, Ryan Petris via
PLUG-discuss <[email protected]> wrote:
I think the option you're looking for is called "affinity":
https://pve.proxmox.com/pve-docs/pve-admin-guide.html#qm_cpu_resource_limits
With the affinity option, you can specify the physical CPU cores
that are used to run the VM’s vCPUs. Peripheral VM processes, such
as those for I/O, are not affected by this setting. Note that the
CPU affinity is not a security feature.
That said, I'm wondering why you're wanting to do this, specifically
what you think you're going to gain over just allowing the kernel to
schedule things the way it normally does.
For instance, it's not going to lock that core specifically for use to
that VM; other processes can still use that core. You'd literally have
to set the affinity of every single process on your system to specific
cores which would be an extreme pain. You still wouldn't have much
control over which cores receive interrupts and whatnot so even then
you still wouldn't have complete control.
Just let the scheduler do its thing, otherwise you're likely going to
end up with weird issues that no one can help with or explain.
On Tue, Jul 2, 2024, at 1:51 PM, Snyder, Alexander J via PLUG-discuss
wrote:
I have a VM running with QEMU on Debian, v is a TrueNAS. Although
they give you a GUI to select options, it is my understanding that
it's just pure QEMU running on the backend.
In this VM, I have vCPUs configured.
Thanks!!
--
Thanks,
Alexander
Sent from my Google Pixel 7 Pro
On Tue, Jul 2, 2024, 13:43 Keith Smith via PLUG-discuss
<[email protected]> wrote:
Hi,
I've started to skim the Ubuntu docs on QEMU. It talks about
vCPUs.
I've run both VirtualBox and Proxmox. Seems both VirtualBox and
Proxmox
only allow for CPU allocation at the CPU level.
I'd really like to be able allocate vCPUs.
Do I understand this correctly?
Thanks!!
Keith
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