Ticket #6633 (closed defect: fixed)

Opened 8 years ago

Last modified 8 years ago

Mathematica causes 100% CPU load on Ubuntu 10.04 guest on Windows 7 host (on Ubuntu 9.10 host works fine)

Reported by: mszulc Owned by:
Priority: minor Component: other
Version: VirtualBox 3.1.6 Keywords: mathematica
Cc: privatespam@… Guest type: Linux
Host type: Windows


How to reproduce:

On fully updated Windows 7 Profesionall English and Virtualbox 3.16:

  1. Install Ubuntu 10.04 LTS (English, US Keyboard).

1b. Start Ubuntu 10.04 and login as normal user.

  1. Install Mathematica 7 from root acount (when asked for license, choose 2 (network) and type localhost as your license server - Mathematica won't work, but you will see 100% CPU load)
  2. Run mathematica from console (as normal user)

Everything works fine with Virtualbox 3.08 OSE from Ubuntu 9.10 host.

'top' shows, that there are 3 tasks which consume CPU resources (every uses ~30%):


UbuntuMathematica-2010-05-03-17-09-25.log Download (75.9 KB) - added by mszulc 8 years ago.

Change History

Changed 8 years ago by mszulc

comment:1 Changed 8 years ago by mszulc

(this is continuation of ticket discription)

java ~ 30% Mathematica ~30% MathKernel ~30%

When correct network server license applied, gui started and nothing changes. 'top' says, thah this is 99% sys usage.

comment:2 Changed 8 years ago by frank

  • Status changed from new to closed
  • Resolution set to fixed

Please reopen if still relevant with VBox 3.2.8.

comment:3 Changed 8 years ago by mszulc

I've installed Virtualbox 3.2.10 and enable Virtualization on my BIOS (HP 6710b, priviously Virtualization was disabled). Now it's much better, but 'mathematica' still consumes 30% of CPU time (in 'top' this is 10% MathKernel, 10% Mathematica, 10% java). Although I think it's OK and not a big problem (and maybe installation of Guest Additions will help, which are already not installed).

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