FAQ Search Today's Posts Mark Forums Read
» Video Reviews

» Linux Archive

Linux-archive is a website aiming to archive linux email lists and to make them easily accessible for linux users/developers.


» Sponsor

» Partners

» Sponsor

Go Back   Linux Archive > Debian > Debian Kernel

 
 
LinkBack Thread Tools
 
Old 09-16-2008, 08:33 PM
Aurelien Jarno
 
Default Bug#499184: linux-2.6: acpi-cpufreq limits a Xeon 3.0GHz to 1.8GHz

Package: linux-2.6
Version: 2.6.26-5
Severity: important

My machine has an Intel Xeon E3110 CPU running at 3.0GHz. When
acpi-cpufreq is loaded, only two frequencies are available, 1.2GHz and
1.8GHz:

| #*grep . /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_frequencies
| /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies:1800000 1200000
| /sys/devices/system/cpu/cpu1/cpufreq/scaling_available_frequencies:1800000 1200000

This limits the maximum speed of the system to 1.8GHz when acpi-cpufreq
is loaded. Removing the module makes the CPU running back at 3.0GHz.

Here are the details from /proc/cpuinfo:

| processor : 0
| vendor_id : GenuineIntel
| cpu family : 6
| model : 23
| model name : Intel(R) Xeon(R) CPU E3110 @ 3.00GHz
| stepping : 6
| cpu MHz : 2992.499
| cache size : 6144 KB
| physical id : 0
| siblings : 2
| core id : 0
| cpu cores : 2
| apicid : 0
| initial apicid : 0
| fpu : yes
| fpu_exception : yes
| cpuid level : 10
| wp : yes
| flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
| bogomips : 5989.46
| clflush size : 64
| cache_alignment : 64
| address sizes : 36 bits physical, 48 bits virtual
| power management:
|
| processor : 1
| vendor_id : GenuineIntel
| cpu family : 6
| model : 23
| model name : Intel(R) Xeon(R) CPU E3110 @ 3.00GHz
| stepping : 6
| cpu MHz : 2992.499
| cache size : 6144 KB
| physical id : 0
| siblings : 2
| core id : 1
| cpu cores : 2
| apicid : 1
| initial apicid : 1
| fpu : yes
| fpu_exception : yes
| cpuid level : 10
| wp : yes
| flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
| bogomips : 5985.04
| clflush size : 64
| cache_alignment : 64
| address sizes : 36 bits physical, 48 bits virtual
| power management:


-- System Information:
Debian Release: lenny/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash



--
To UNSUBSCRIBE, email to debian-kernel-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
 
Old 09-16-2008, 10:15 PM
Bastian Blank
 
Default Bug#499184: linux-2.6: acpi-cpufreq limits a Xeon 3.0GHz to 1.8GHz

On Tue, Sep 16, 2008 at 10:33:17PM +0200, Aurelien Jarno wrote:
> My machine has an Intel Xeon E3110 CPU running at 3.0GHz. When
> acpi-cpufreq is loaded, only two frequencies are available, 1.2GHz and
> 1.8GHz:

Which is the first kernel which shows this behaviour? Are you running
the latest BIOS? Please provide the complete log.

Bastian

--
The sight of death frightens them [Earthers].
-- Kras the Klingon, "Friday's Child", stardate 3497.2



--
To UNSUBSCRIBE, email to debian-kernel-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
 

Thread Tools




All times are GMT. The time now is 07:05 PM.

VBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2007, Crawlability, Inc.
Copyright 2007 - 2008, www.linux-archive.org