Re: Slower CPU frequency reported by the kernel
"Francis Moreau" <[EMAIL PROTECTED]> writes: > > What's going wrong ? Nothing. It's a feature that saves you enegery (=money) and noise when the computer doesn't have much to do. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
RE: Slower CPU frequency reported by the kernel
> > I'm using a PC with AMD 64 3000+ cpu which is theoricaly running at > > 2Ghz. But when looking at /proc/cpuinfo, the kernel reports that it > > runs only at 1Ghz: > > ... > > What's going wrong ? > > Do you have feature called "Cool N' Quiet" enabled in BIOS? > I had the same problem and disabling the feature the problem resolved. Linux reports the frequency the processor is currently running at. Cool N' Quiet is a feature that allows the processor to run at a lower frequency and voltage when it is idle, thereby saving you power and letting your fans run slower and quieter. Don't turn it off. -Mark Langsdorf AMD, Inc. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
maybe, you start a powersaved service, and enable the cpufreq module of kernel. You need run "powersave -f" for fix your CPU to highest frequency supported. On Sat, 2007-02-03 at 12:19 +, [EMAIL PROTECTED] wrote: > On Fri, 02 Feb 2007 12:11:25 +0100, Francis Moreau wrote: > > Hi, > > > > I'm using a PC with AMD 64 3000+ cpu which is theoricaly running at > > 2Ghz. But when looking at /proc/cpuinfo, the kernel reports that it > > runs only at 1Ghz: > > ... > > What's going wrong ? > > Do you have feature called "Cool N' Quiet" enabled in BIOS? > I had the same problem and disabling the feature the problem resolved. > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
On Fri, 02 Feb 2007 12:11:25 +0100, Francis Moreau wrote: > Hi, > > I'm using a PC with AMD 64 3000+ cpu which is theoricaly running at > 2Ghz. But when looking at /proc/cpuinfo, the kernel reports that it > runs only at 1Ghz: > ... > What's going wrong ? Do you have feature called "Cool N' Quiet" enabled in BIOS? I had the same problem and disabling the feature the problem resolved. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
On 2/2/07, Paolo Ornati <[EMAIL PROTECTED]> wrote: Anyway it is started by an init script, so you should find it looking at "ls /etc/init.d/". thanks for these information. I'm using a Fedora distrib and it actually uses 'ondemand' governer with the cpu I use. -- Francis - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
On 2/2/07, Arjan van de Ven <[EMAIL PROTECTED]> wrote: it may be userspace, or you may be using the "ondemand" governer. If you have the userspace tool it's often called "cpuspeed", but it depends on your distro. you're right, I actually use 'ondemand' governer. It seems to be the governer used by Fedora when the cpu is a AMD 64 3000+ thanks -- Francis - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
On Fri, 2 Feb 2007 15:03:31 +0100 "Francis Moreau" <[EMAIL PROTECTED]> wrote: > it's seems that the cpu freq scaling depends on a user space tool. Yes, it depends on the selected governor. In the case of "userspace" governor you (or a program) can set the speed writing to "/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed". Usually a deamon monitor the CPU usage and increase the frequency when you need it. > Could you tell me how I can find if there're such tools installed on > my computer ? "ps -A" and look for something like "cpufreqd" There are different deamon for this: cpufreqd, cpudyn... Anyway it is started by an init script, so you should find it looking at "ls /etc/init.d/". -- Paolo Ornati Linux 2.6.20-rc7 on x86_64 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
> it's seems that the cpu freq scaling depends on a user space tool. > Could you tell me how I can find if there're such tools installed on > my computer ? it may be userspace, or you may be using the "ondemand" governer. If you have the userspace tool it's often called "cpuspeed", but it depends on your distro. -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
On 2/2/07, Paolo Ornati <[EMAIL PROTECTED]> wrote: You are using frequency scaling(*) and "/proc/cpuinfo" reflects the current speed. ok, I didn't know about this. (*) = # # CPU Frequency scaling # CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_TABLE=y CONFIG_CPU_FREQ_DEBUG=y CONFIG_CPU_FREQ_STAT=m CONFIG_CPU_FREQ_STAT_DETAILS=y # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y it's seems that the cpu freq scaling depends on a user space tool. Could you tell me how I can find if there're such tools installed on my computer ? thanks -- Francis - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
Hi On 2/2/07, Jesper Juhl <[EMAIL PROTECTED]> wrote: I agree that that is the most logical explanation, but in theory it could also be that he has changed bios settings and underclocked the processor. no I didn't thanks -- Francis - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
On 02/02/07, Paolo Ornati <[EMAIL PROTECTED]> wrote: On Fri, 2 Feb 2007 12:11:25 +0100 "Francis Moreau" <[EMAIL PROTECTED]> wrote: > Hi, > > I'm using a PC with AMD 64 3000+ cpu which is theoricaly running at > 2Ghz. But when looking at /proc/cpuinfo, the kernel reports that it > runs only at 1Ghz: > I agree that that is the most logical explanation, but in theory it could also be that he has changed bios settings and underclocked the processor. -- Jesper Juhl <[EMAIL PROTECTED]> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Slower CPU frequency reported by the kernel
On Fri, 2 Feb 2007 12:11:25 +0100 "Francis Moreau" <[EMAIL PROTECTED]> wrote: > Hi, > > I'm using a PC with AMD 64 3000+ cpu which is theoricaly running at > 2Ghz. But when looking at /proc/cpuinfo, the kernel reports that it > runs only at 1Ghz: > > # cat /proc/cpuinfo > > processor : 0 > vendor_id : AuthenticAMD > cpu family : 15 > model : 12 > model name : AMD Athlon(tm) 64 Processor 3000+ > stepping: 0 > cpu MHz : 1000.000 > cache size : 512 KB > fdiv_bug: no > hlt_bug : no > f00f_bug: no > coma_bug: no > fpu : yes > fpu_exception : yes > cpuid level : 1 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext lm > 3dnowext 3dnow ts fid vid ttp > bogomips: 2004.89 > > I tried with a 2.6.20-rc7 kernel and still have the same. > > What's going wrong ? You are using frequency scaling(*) and "/proc/cpuinfo" reflects the current speed. (*) = # # CPU Frequency scaling # CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_TABLE=y CONFIG_CPU_FREQ_DEBUG=y CONFIG_CPU_FREQ_STAT=m CONFIG_CPU_FREQ_STAT_DETAILS=y # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=m CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_ONDEMAND=m CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m Read "Documentation/cpu-freq/user-guide.txt" for more info. -- Paolo Ornati Linux 2.6.20-rc7 on x86_64 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
