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Tasklist

FS#18399 - [virtualbox-ose] tickless kernel warning

Attached to Project: Community Packages
Opened by Byron Clark (byronc) - Friday, 19 February 2010, 13:52 GMT
Last edited by Ionut Biru (wonder) - Friday, 19 February 2010, 14:42 GMT
Task Type Bug Report
Category Packages
Status Closed
Assigned To No-one
Architecture i686
Severity Very Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

Upon install, virtualbox-ose prints the following warning:
===> Tickless Linux timer: VirtualBox currently does not work well on Linux
===> kernels with tickless timer support (CONFIG_NO_HZ enabled).
===> We are investigating the problem but in the meantime you should disable
===> the tickless timer by disabling that config option or by adding nohz=off
===> to the Linux kernel command line.

According to the VirtualBox FAQ (http://www.virtualbox.org/wiki/User_FAQ), this warning is no longer true:
* Tickless Linux timer: VirtualBox currently does not work well on Linux kernels with tickless timer support (CONFIG_NO_HZ enabled). We are investigating the problem but in the meantime you should disable the tickless timer by disabling that config option or by adding nohz=off to the Linux kernel command line.
Starting with VirtualBox 1.5.6 the Linux kernel module knows the parameter force_async_tsc. Try loading the kernel module with

modprobe vboxdrv force_async_tsc=1

and see if that helps to improve things for you.
(Should not be necessary anymore since VirtualBox 1.6.0)

Package Versions:
* virtualbox-ose 3.1.4-1
This task depends upon

Closed by  Ionut Biru (wonder)
Friday, 19 February 2010, 14:42 GMT
Reason for closing:  Fixed
Additional comments about closing:  in trunk

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