JD wrote: > > On 09/22/2010 10:56 AM, Kenneth Marcy wrote: > >> On Sep 22, 2010, JD<jd1...@gmail.com> wrote: >> >> On my notebook, which has an old 2.2 GHz athlon65 uniicore (3700+), >> cpuinfo shows cpu MHz as 798.103 >> >> OK >> >> Does that mean that as I am typing this message, the cpu is running >> at only 790MHz?? >> >> Approximately, yes. Your machine is also not discharging its battery quite >> so fast, nor is it generating more heat unnecessarily for the modest level >> of CPU activity you are now requesting of the machine. >> >> How an I speed it up? >> >> Ask the CPU to do more work. Recalculate a large spreadsheet. Spell-check a >> long document. Do a database lookup. Better yet, do them all at the same >> time. If your bandwidth, as opposed to the machine's, isn't interested in >> all that excitement, but you still want to exercise the processor more, find >> some program to run in the background while you do less compute-intensive >> tasks. For example, you could join the fold...@home project: >> > I ran a super cpu hog: celestia. Cput utilization reached 99.9% and > stayed there. > In a terminal window, I ran this shell: > > while true; do > cat /proc/cpuinfo | grep -i mhz > sleep 3 > done > > The speed stayed at 790MHz. > > I think there must be something wrong with speed-step > or somehow, the bios does not update this value (I understand > that cpuinfo is populated by calls to bios). > > I wish I could find a program that could actually > test the cpu MHz by timing, in a loop, a complex > set of instructions which would be an average > representation of the machine's instructions used > by apps and kernel. I am not sure if such a program > exists. The old "mips" calculation programs do not > work on modern architectures. > > >> http://en.wikipedia.org/wiki/fold...@home >> >> Or you could just be content that your computer knows how to run in an idle >> mode instead of racing around at top speed when it doesn't have anything to >> compute at the moment (which is most of the time, usually). >> >> One of the larger challenges of contemporary computer science is to figure >> out how to use, most efficiently and effectively, the multiple processor >> resources now more commonly available. Software has to be made aware of how >> to best use the newer hardware, and this is a non-trivial task. >> >> >> Ken >> In the Bios check your C2 or C3 and make sure it is disabled. Also Cool and Quiet needs to be turned off.
I hate that feature as my rig is at 100% load on all 4 cores 24/7 . (s...@home) That's one thing very nice about this processor (Phenom II 965 @ 3.6) is I do not even realize that it is under 100% load all the time. I can't wait to see the Bulldozer series in action ( 16 cores Hyperthreaded) yeah baby.......... -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
