VM/Ubuntu Server random running issues

[apoc]

before I was adding 28(max I have)

No no no!

Welcome to a paperchase...

Don't EVER assign all your CPUs / threads to one VM!
It doesn't make sense from a configuration perspective and it is not good.practice.
Even do not assign all physical cores to a vm!

If you need all that cpu power skip virtualization and go bare metal. If you want to vurtualize then size with least possible hardware within the VM. Everything else adds unnecessary (and expensive) overheads and as you just have proven uncalculatable side effects.

 

[Octavian]

No no no!

Welcome to a paperchase...

Don't EVER assign all your CPUs / threads to one VM!
It doesn't make sense from a configuration perspective and it is not good.practice.
Even do not assign all physical cores to a vm!

If you need all that cpu power skip virtualization and go bare metal. If you want to vurtualize then size with least possible hardware within the VM. Everything else adds unnecessary (and expensive) overheads and as you just have proven uncalculatable side effects.

good to know @tburger, thanks!
any good practice recommendations - please share it here please.

Any idea's why Im getting this fail after executing virt-host-validate? (if I understand correctly, all the lines should be pass)

 

[Octavian]

Another interesting situation:
I have 4 VMs(Ubuntu) a(1cpu), b(1cpu), c(2cpu), d(2cpu) - all good.
Ive create VM nr. 5 - e - 8CPU.
got Internal error for VM d and e. KVM: entry failed, hardware error 0x5

 

[apoc]

@Octavian what's your processor you are using?

good to know @tburger, thanks!
any good practice recommendations - please share it here please.

Check my recent pospost here:
https://forum.proxmox.com/threads/cpu-cores-and-threads.65923/#post-361252
I think I need to write up something regarding this topic...

Any idea's why Im getting this fail after executing virt-host-validate? (if I understand correctly, all the lines should be pass)

Where are you running this command?
What is the system "Ubuntu" actually doing? Is this your host or a guest?

 

[Octavian]

@Octavian what's your processor you are using?


Check my recent pospost here:
https://forum.proxmox.com/threads/cpu-cores-and-threads.65923/#post-361252
I think I need to write up something regarding this topic...


Where are you running this command?
What is the system "Ubuntu" actually doing? Is this your host or a guest?

hi @tburger
Guest

 

[Octavian]

thanks guys for all the ideas.
Special thanks @tburger for https://forum.proxmox.com/threads/cpu-cores-and-threads.65923/
was fallowing the recommendations from Option 1
the same issue, very disappointed.

 

[Octavian]

during 20 min. just OS(ubuntu) on VM's. No actions taken. just looking into the logs.

 

[smutel]

Hello,

I have the same issue.

Did someone find a solution ?
Is-it due to a hardware issue ?

Thanks.