Proxmox 2.x vs 3.x CPU load

[adamb]

I have 2 separate clusters. One is running pve 2.3 and the other is running pve 3.3. Each cluster is comprised of identical hardware IBM x3650 M4's. Each cluster has one running VM which is CentOS6. Noticing a significant difference in load averages between the two when running similar operations. As you can see from the screen shots they both have a KVM process which are running pretty hard. My only issue is the pve 3.3 cluster reports pretty much no load average even though it has a VM running between 600-900% CPU consistently.

PVE 2.3


PVE 3.3


The VM configurations are identical other than one has 40GB of ram and the other has 50GB. I even see this difference in load within the guest itself. Everything is running AOK just trying to rap my head around the reason for such a difference.

 

[mir]

I guess what you are experiencing is the development from RHEL 6.2 to RHEL 6.6 kernel vis-a-vis core, memory, parallel excution, and numa optimization. Also a big difference in qemu between proxmox 2.3 and proxmox 3.3. Take this as a hint that an upgrade is imminent;-)

 

[adamb]

I guess what you are experiencing is the development from RHEL 6.2 to RHEL 6.6 kernel vis-a-vis core, memory, parallel excution, and numa optimization. Also a big difference in qemu between proxmox 2.3 and proxmox 3.3. Take this as a hint that an upgrade is imminent;-)

Interesting, the guests are running fine, the load difference had me a bit stunned for being identical guests/hardware. Appreciate the input.