VBox 2.1.2 performance decrease

Discussions related to using VirtualBox on Mac OS X hosts.
marco
Posts: 163
Joined: 19. Jul 2007, 07:42

Post by marco »

No news?
carlill
Posts: 9
Joined: 25. Oct 2007, 16:01

Windows XP (32 bit) host; Ubuntu 8.10 (32 bit) guest

Post by carlill »

Just for the record, the above combination is showing great "sluggishness" under 2.1.2 that I had not seen in earlier releases.

Also, from time to time, VirtualBox.exe seems to take excessive CPU (hogs one core of a 2 core system).

Ceri
G. I.
Posts: 10
Joined: 26. Oct 2007, 10:42

Post by G. I. »

Just moving the mouse around invokes 30-80% CPU usage in the XP SP2 guest depending on the foreground application. NAT, no SATA. I guess it's something with the video driver.
MBP 2.4 OS X 10.4.11
erighi
Posts: 3
Joined: 7. Nov 2008, 15:44

Post by erighi »

Same problem here. But unlike with the older version (was using 2.0.6) where turning off VT-x/AMD-V showed better results, with this one I noticed a *huge* performance boost by turning on AMD-V.

I'm using VB on a Turion 64 X2 notebook, running Vista x64 on host and XP 32 guest.

Interesting to note that my processor doesn't have support for nested paging which *should* be an explanation for the performance improvement. So, no conclusion, only that the VM is running faster now.

I haven't made any benchmark with 2.0.6 so it will be useless to do any one now, but I can say that I don't feel that sluggish behaviour anymore, and using the VM in 2.1.2 is just like it was before.
rm53
Posts: 39
Joined: 9. Sep 2008, 21:47

Post by rm53 »

@carlill, @erighi:
wrong forum.
this is the VB on Mac OS X host forum, not Windows, sorry.

We do not have a VirtualBox.exe...
erighi
Posts: 3
Joined: 7. Nov 2008, 15:44

Post by erighi »

rm53 wrote:@carlill, @erighi:
wrong forum.
this is the VB on Mac OS X host forum, not Windows, sorry.

We do not have a VirtualBox.exe...
Sorry.... I was searching the forum when I found this topic, and I was navigating through the Windows Host forum just a moment before. I think that's why I made this mistake... I'll pay more attention next time.
billynoah
Posts: 3
Joined: 26. Aug 2008, 12:05

slow performance

Post by billynoah »

do the developers read these forums? it would be reassuring to know that this issue is at least being looked at.
sandervl
Volunteer
Posts: 1064
Joined: 10. May 2007, 10:27
Primary OS: MS Windows Vista
VBox Version: PUEL
Guest OSses: Windows, Linux, Solaris

Post by sandervl »

Of course we do. If you're interested you can try an internal build that has at least one performance fix for Windows guests. Write me a private message in that case please.

Thanks.
hbqiao
Posts: 1
Joined: 7. Feb 2009, 09:52

Post by hbqiao »

I see problem with 2.1.2 release mostly with 64 bit Window server guest on a Windows host, one CPU core on the host machine is pegged. Tried 2 machines it is the same. 32 bits Window server and XP are running fine
rumplestiltskin
Posts: 1
Joined: 8. Feb 2009, 20:22

Post by rumplestiltskin »

Another confirmation. However, I'm seeing almost a 3X speed difference.

Launch Word 2007: 6 seconds on v2.0.6 vs 17 seconds on v2.1.2

Reverted back to v2.0.6 (thank goodness the app does a backup of its ".xml" files).

Glad to have this forum available!

edit: Host: 2.4GHz iMac, OSX 10.5.5, 4GB RAM (1GB + 12MB video RAM assignments)
j2gl
Posts: 1
Joined: 17. Feb 2009, 18:57

New version 2.1.4

Post by j2gl »

New version 2.1.4

Had anyone tryed the new version 2.1.4?
I saw the changelog and I looks like they solved performance the problem:
VMM: ?xed performance regression for Windows guests (bug #3172)
http://www.virtualbox.org/wiki/Changelog
http://www.virtualbox.org/ticket/3172

I will give it a try.
marco
Posts: 163
Joined: 19. Jul 2007, 07:42

Re: VBox 2.1.2 performance decrease

Post by marco »

Just a curiosity:

Can anybody from VB team tell us what was causing that performance decrease or, at least, where the problem was (guestadditions, video driver, main program...)?

I know it none of my business, but I'm just curious.
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