Change in CPU Speed

[Amrac]

Hi,
I'm looking to proxmox and making some benchmark to decide if i set up my website on proxmox.

I did 2 benchmark on the same host, the first with a classic Ubuntu and the second in a Ubuntu OpenVz Container, but i dont really understand the result:
Their was only this OpenVz container with Proxmox, all 8 core and pretty much same Ram (60Gb vs 64). CPU Unit was left to 1 000 (But no other things running)

This is the benchmark for ubuntu classic: http://serverbear.com/benchmark/2013/07/02/ZNMWjWeUg9jvS7kn
It got "6462.9" for all processor and "1579.2", the CPU speed is "1200 MHz".

On the test with proxmox: http://serverbear.com/benchmark/2013/07/03/ZgI76bSWyvxpqFpL
It got a little lower score for all processor "5805.0" (-10%) and a better score with one core: "2000.8" (+21%)
CPU Speed is 3599 MHz.

I dont understand why their is this difference on CPU clock, did i got something wrong?

 

[udo]

Hi,
I'm looking to proxmox and making some benchmark to decide if i set up my website on proxmox.

I did 2 benchmark on the same host, the first with a classic Ubuntu

Hi,
do I understand you right, that you install an ubuntu directly on the host?!

and the second in a Ubuntu OpenVz Container, but i dont really understand the result:
Their was only this OpenVz container with Proxmox, all 8 core and pretty much same Ram (60Gb vs 64). CPU Unit was left to 1 000 (But no other things running)

This is the benchmark for ubuntu classic: http://serverbear.com/benchmark/2013/07/02/ZNMWjWeUg9jvS7kn
It got "6462.9" for all processor and "1579.2", the CPU speed is "1200 MHz".

On the test with proxmox: http://serverbear.com/benchmark/2013/07/03/ZgI76bSWyvxpqFpL
It got a little lower score for all processor "5805.0" (-10%) and a better score with one core: "2000.8" (+21%)
CPU Speed is 3599 MHz.

I dont understand why their is this difference on CPU clock, did i got something wrong?

Perhaps on the plain Ubuntu is powersaving active, which scale down the cpu during idle time. What do you see with an started ubuntu in cpuinfo?

grep "cpu MHz" /proc/cpuinfo

Udo

 

[Amrac]

I found the issue, the plain Ubuntu was with a strange CPU OnDemand.
Once the CPU set to Performances on both OS, this is the new score:
Plain Ubuntu: 2370 1 CPU, 7264 Multi CPU
Proxmox OpenVz Ubuntu: 2241 CPU, 5925 Multi CPU