I have a Turion ML-37. /proc/cpuinfo says: rocessor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 36 model name : AMD Turion(tm) 64 Mobile Technology ML-37 stepping : 2 cpu MHz : 800.000 cache size : 1024 KB
Why is cpu MHz 800? This link says it should be 2000MHz: http://www.techpowerup.com/cpudb/details.php?id=136
Is this set dynamically?
Andy Green wrote:
Neal Becker wrote:
Is this set dynamically?
Yep
service cpuspeed stop
To kill it permanently
chkconfig cpuspeed off
Be aware you are eating battery doing so. As soon as the processor is stressed, it will crank up the clock while cpuspeed is active.
-Andy
I suspected as much, but I don't see any messages logged about cpuspeed adjustment. Is there some way I can monitor what it's doing? There is no documentation on cpuspeed AFAICT.
Neal Becker wrote:
I suspected as much, but I don't see any messages logged about cpuspeed adjustment. Is there some way I can monitor what it's doing? There is no documentation on cpuspeed AFAICT.
Not much to document...
Become root, and look in /sys/devices/system/cpu/cpu0/cpufreq. cpuinfo_cur_freq is the current frequency (you'll need to be root to see this), and cpuinfo_max_freq and cpuinfo_min_freq are fairly obvious.
You can google this for more information, but you'll notice that if the system load goes up sufficiently, the system speed goes up to give you the CPU power you need. When you don't want it, (which in my experience is most of the time), the CPU speed will rapidly go down to the minimum available speed.
Basically, the speed is there when you need it, and when you don't, the system saves power and heat. I keep cpuspeed working on a desktop system: I'd strongly recommend it for a laptop.
Hope this helps,
James.
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Neal Becker wrote: [snip cpuspeed conversation]
I suspected as much, but I don't see any messages logged about cpuspeed adjustment. Is there some way I can monitor what it's doing? There is no documentation on cpuspeed AFAICT.
In addidion to the comments already made, Gnome has the cpufreq monitor which will sit in the taskbar and show you current CPU speed (and allow you to change it manually).
- -- Craig McLean http://fukka.co.uk craig@fukka.co.uk Where the fun never starts Powered by FreeBSD, and GIN!
On Fri, Jan 27, 2006 at 05:40:16PM +0000, Andy Green wrote:
Date: Fri, 27 Jan 2006 17:40:16 +0000 From: Andy Green andy@warmcat.com To: For users of Fedora Core releases fedora-list@redhat.com Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA CXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH1QgcEB8sRzxF1wAAAO5JREFUGNMlj6FuAkEQhn8u 3ANU4GlVU9NXOFGB3BBqalBNmmBxTWAlqSkadZKgEK1t7hFoAoYgcD1IGmqA5Jrt9J/ZFfPl251/ JgvhcQBrWBr2IM7yTYSLoasTq+5UL1cDf030ugXt+CmsON3djjJgd9kGEV56fs6W/ZcfAa/H56JF m4lHE/Ih285YNxRXmWLbcGb3TcXPTR7N3spoi0a02FmmtCBljfYrZZIZ1A6ygI/Q3CGv2VdyaPwv h21w+gcJT3VDP4HG1ylRcQo7z0ukltugwJC5xKu92ZQqWjWxKfLoEp3yninkgQvFev4Brbazn0BT QlUAAAAASUVORK5CYII= Subject: Re: ML-37 clock speed Reply-To: For users of Fedora Core releases fedora-list@redhat.com
Neal Becker wrote:
Is this set dynamically?
Yep
service cpuspeed stop
To kill it permanently
chkconfig cpuspeed off
Slightly better
chkconfig --level 123456 cpuspeed off
If you stop in level 1 for some reason cpuspeed can clock down the CPU then 'telinit 5' and you do not have cpuspeed to get you out of first gear. (what is a Nash Rambler ---).
For most of us "chkconfig cpuspeed off" is just fine.
Be aware you are eating battery doing so. As soon as the processor is stressed, it will crank up the clock while cpuspeed is active.
Watch our for 'micro' benchmarks of any kind. They often do not run long enough to be noticed by cpuspeed.
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Andy Green -
Craig McLean -
James Wilkinson -
Neal Becker -
Tom Mitchell