Ubuntu 12.04 x86_64 Poor Performance on Hyper-V in Windows 8

As of the Hyper-V Version: 6.2.9200.16384, Ubuntu 12.04 x86_64 performs very slow as a guest os. I switched to CentOS 6.2 x86_64 and performance was dramatically increased. It should be noted that “Linux Integration Services Version 3.4 for Hyper-V” was installed on the CentOS system, but not the Ubuntu system. I’ll investigate this at a later date.

I’ll post a unixbench of both VMs when I get a maintenance window. But for now, examine these load averages. Both running a minecraft server (Bukkit 1.4.6-R0.1) of the same world with the same amount of people. Both had 4GB of ram and 4 CPUs.

Ubuntu 12.04 x86_64: load average: 2.65, 2.92, 2.47

CentOS 6.2 x86_64: load average: 0.14, 0.11, 0.09

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EDIT 12/27/2012

UnixBench Ubuntu 12.04

UnixBench CentOS 6.2

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