Linux - GeneralThis Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
How can I get Hyperthreading working on my dual Xeon board when the BIOS does not contain the ACPI support module?
Is there a magic set of kernel options that will get the kernel to start the Hyperthreaded CPUs?
I am having a problem with a dual (physical) Xeon VME single board (from GMS model V269)) getting hyperthreading up and going on the CPUs. Two physical CPUs are recognised but not the
I have Fedora Core 3 installed with the SMP kernel now upgraded (rpm) to 2.6.10
The board manufacturer has not included the ACPI module in the BIOS (AMIBIOS8) for their own reasons. GMS position is that this is only a power management function and users of this board would not require power manangement.
The BIOS Northbridge (Serverworks GC-LE) support does have a switch option to enable hyperthreading, this is enabled.
As I understand ACPI the BIOS passes configuration information about the CPUs to the Linux Kernel which then know how to initialise the Hyperthreading CPUs.
Apparently Windows does not require this information from the Kernel to run Hyperthreading so naturally GMS (the board manufacturer) is not willing to spend the effort to get ht on Linux sorted out.
On booting the Linux dmesg shows the message "ACPI: Unable to locate RSDP" which I interpret to mean the Kernel is unable to find the resource information table which should have been setup by the BIOS.
I have tried the kernel parameter acpi=ht but this did nothing to activate the ht activity.
Does this make sense?
Hoping someone can give me some clues.
did you ever happen to figure this one out. I am having a similar problem. i get the acpi message. I have noticed that my system resources sometimes indicates two processors and sometimes four (depending on kernel). Does this mean hyperthreading is off/on respectively and is it related to the ACPI error?