Absurd benchmark results in Guestsystems

[Maik Barz]

Host: Ubuntu 7.04 server Guest1: Ubuntu 6.06 lts server Guest2: Ubuntu 6.06 lts server

Running tests like bonnie++ and nbench-2.2.2 return absurd results: Guest systems acquire 10times better results than its host. The tests are run seperately, not parallel on host and guest!

Bonnie++ is a io/hdd benchmark and nbench is a Bytemark CPU benchmark.

Virtualbox Version 1.5.0

The same tests on XEN and VMware server return "correct" results, so that it does not seem to be an error at those benchmark programs

[Sander van Leeuwen]

Could you post the results here?

[Maik Barz]

Results of nbench CPU Benchmark

[Maik Barz]

Result of Bonnie++ hdd/io Benchmark

[Maik Barz]

I posted the results as JPG, I hope it'll help you. Today I re-benchmarked with Virtualboxvdersion 1.5.1 but guestsystem still acquires higher values than hostsystem.

[Frank Mehnert]

Do you have guest additions installed or not? Please check if vboxadd-timesync is running in the guest.

[Maik Barz]

I did not have installed it then.

But now I have and still get the same result!

[Frank Mehnert]

Please reopen if still relevant with VBox 4.1.6.