Issue with multiple processors

Discussions related to using VirtualBox on Linux hosts.
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jeswin
Posts: 1
Joined: 14. Aug 2009, 20:54
Primary OS: Ubuntu other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows 7,Windows 2008 R2

Issue with multiple processors

Post by jeswin »

My configuration is: VBox version 3.0.4, Core i7, HT enabled, running Ubuntu 9.04 as host.

I had allocated 4 processors (out of 8 virtual processors, due to HT) to a Windows 2008 R2 VM, but performance is very slow with the configuration. It gets slower and slower, and finally crashes after 2 or 3 hours.
I had the same experience with Windows 7.

Allocating a single processor works as expected, and runs much faster than allocating 4.

I am not sure if this issue is due to HT, in which case will allocating all 8 virtual processors help?
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Sasquatch
Volunteer
Posts: 17798
Joined: 17. Mar 2008, 13:41
Primary OS: Debian other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Windows XP, Windows 7, Linux
Location: /dev/random

Re: Issue with multiple processors

Post by Sasquatch »

SMP support is still experimental and performance has been an issue since introduction. All you can do at the moment is add your experience to the bug in the Bugtracker and disable SMP. Use the search trick from the Forum Posting Guide to find the bug report.
Read the Forum Posting Guide before opening a topic.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org

Retired from this Forum since OSSO introduction.
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