Ubuntu
linux package

  1. Bug #429036
  2. Comment #3

Comment 3 for bug 429036

Revision history for this message
Michael Bommarito (mjbommar) wrote :

I've had issues with both the HP dv6t and Alienware m15x.

Here are some logs with TurboBoost enabled and disabled.
http://www-personal.umich.edu/~mjbommar/m15x/

I've done some performance testing here:
http://global.phoronix-test-suite.com/index.php?k=profile&u=mjbommar-10157-25021-1778

You can see that Ubuntu virtualized under VirtualBox on Windows 7 outperforms Ubuntu 9.1 running natively by quite a bit. This was the case with the dv6t, though there were also thermal issues with that machine (buggy BIOS).

I also compiled 2.6.32-rc8 without ACPI, SMP, or SMT. The scimark2 scores were around 530 again, indicating that there was no performance gain even when the OS was only accessing one core.

I'd say this is a pretty big issue. Under native Ubuntu, an M4400 with DDR2 and an C2D X9100 currently beats the m15x with DDR3 and an i7 820.