vMotion and new hardware (cluster) translates the decrease in performance

Platform 1 is core 4 or 6 X 5550 X 5650 @2. 6 GHz (outside any cluster) on ESXi 5.1 r1312873

Platform 2 is 4 core E5-2637v2 @3. 5 GHz (Cluster with Mode VCA SandyBridge) on ESXi 5.5 r2068190

After platform vmotion 1-2 (database servers) users reported a degradation in performance.

Looking at our charts of cactus representing the CPU usage, we see the following. (You can imagine when the vmotion arrived).

vmotion-cpu.jpg

Is this normal? Why is this?

The specific virtual machine I'm showing here is a virtual machine in version 7 with 2 vCPU and 18G RAM using Linux SLES (kernel 2.6.27).

Note After the full stop and restart, it's ok (tested on other machines affected in the same way)

-Very well, we have now disabled power management in the new host BIOS...

Tags: VMware

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