Benchmark - WinXP VM @ Host: Ubuntu & WinXP

[metalhammeroid]

Hello, I need a little help with this...
I have 2 partitions on my laptop ( Lenovo 3000 N100 with 2Gb RAM and Intel Core2 T5300 @ 1.73GHz Processor),
and 2 OS installed: Windows XP & Ubuntu 9.04. On both I have installed VirtualBox 3.0, and i have one Windows XP
guest, that is the same on both OS. ( winXP guest is saved on 3rd partition that my both OS can read).
So, I wanted to test the same VM on 2 different hosts, that are running on the same hardware, so the only difference
would be the host OS. I used PassMark Performance Test 7.0, and the VM running on WinXP host was faster in almost
every test. After some time I noticed that the difference between those two VM is CPU frequency. Physical hardware
CPU runs at 1,73 GHz, VM on WinXP host at 907Mhz, and VM on Ubuntu host at 388Mhz. So the question is:

Why the VM doesn't detect my real CPU frequency? I did few tests more, and I get the same results.

Here is the picture:


Please help
P.S: I can't sleep because of this

[fixedwheel]

guest, that is the same on both OS. ( winXP guest is saved on 3rd partition that my both OS can read).

what filesystem is that partition? linux can read/write with ntfs-3g but AFAIK this is quite lame

2 different hosts, that are running on the same hardware,

the placement of the hosts system partition on the disk makes different HDD speed, usually first partition is faster, this affects the speed of the host but may affect the guest too.

CPU runs at 1,73 GHz, VM on WinXP host at 907Mhz, and VM on Ubuntu host at 388Mhz. So the question is:

hmm... on the Ubuntu host please do a

Code: Select all

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies

to see whats up

[chronoboy]

I have noticed the very same issue, my host set-up is different as well. I installed each guest seperately, but used same guest configuration options. The guest's Windows setup is also noticably different in performance, let alone actually using the guest after installation.

At first, I thought it may have been my crypto-root/LVM setup I have on my Linux host, however if you are experiencing the same issue, then I can safely say that this is not causing the slowness in VirtualBox.

Overall, this is very disappointing. I am sure the Solaris version is just as swift as the Windows version.

My thread: http://forums.virtualbox.org/viewtopic.php?f=1&t=20559