The cpu-frequency tag has no wiki summary.
3
votes
1answer
51 views
How to measure the clock pulse of my computer manually?
My PC has two processors, and I know that each one runs at 1.86 GHz. I have just read about clock cycles and I only have a (very) rough understanding, so I apologize beforehand if my question is so ...
2
votes
0answers
50 views
Unable to reduce core frequency freebsd
I'm working on a FreeBSD project where I need to maintain the temperature of the processor below a threshold value. In order to reduce the temperature I'm trying to dynamically change the frequency of ...
4
votes
3answers
541 views
Host CPU does not scale frequency when KVM guest needs it
I have asked this question on serverfault, but it could also have been posted here. I will synchronise the answers if one is found.
Observation:
I have an HP server with an AMD dual core CPU (Turion ...
1
vote
0answers
415 views
Intel Core i3/i5/i7 Sandy Bridge CPU throttling
Intel Sandy-Bridge family i5 Core CPU, running Linux kernel 3.2 (Debian Squeeze/Wheezy), under heavy computation load, does not react to to cpufreq-set -g powersave (using acpi_cpufreq module). It is ...
6
votes
1answer
183 views
Can I run multiple cores at different clock speeds?
I see the cores on an Intel i5 machine I'm looking at can only be run at the same clockspeed: /sys/devices/system/cpu/cpu1/cpufreq/related_cpus lists all of the CPUs. Setting cpu1's clockspeed changes ...
1
vote
2answers
233 views
How does CPU frequency work in conky?
I'm setting up conky and I would like to add the CPU frequency, but if I put
${freq_g cpu0} Ghz
I get 1.2Ghz. Why is that? My CPU is 2.8Ghz.
1
vote
1answer
401 views
Calculating total CPU system usage in C
I found this answer on StackOverflow for calculating total CPU usage: http://stackoverflow.com/questions/1420426/calculating-cpu-usage-of-a-process-in-linux/4497769#4497769
But how do I calculate ...
4
votes
1answer
196 views
Has anyone actually tested laptop battery life under different CPU governors?
In theory, switching from the ondemand governor to conservative should save battery life on laptops.
However, I don't think I've ever seen any tests done to verify this or show how significant a ...
2
votes
0answers
196 views
cpufreqd does not control temperature plus shows no output
Since my laptop (an Acer Aspire 5750G running a Gentoo Linux with a not-quite-up-to-date kernel 2.6.39-r3 (a weird wLan hardware makes the update difficult)) tends to run rather hot I am trying to ...
3
votes
1answer
669 views
cpufreq-set -g performance doesn't work on arch linux
acpi-cpufreq was already loaded , where the frequency was all 800MHz now , and I can't make it back to full-speed , which is 2500MHz.
I tried cpufreq-set -g performance , then I check /proc/cpuinfo , ...
1
vote
1answer
259 views
Process priority and cpu speed
In some devices the cpu speed is dynamic, being faster when there is more load.
I was wondering if it is possible to set nice level or priority of a process so that it does not influence an increase ...
2
votes
1answer
463 views
FreeBSD CPU frequency scaling on AMD Sempron 2100
I have FreeBSD 9.0-RC3 installed on an HP Thin Client that has a Mobile AMD Sempron(tm) Processor 2100+. I am trying to get cpufreq and powerd to manage the frequency of the processor, but I'm not ...
5
votes
1answer
246 views
Loading speedstep_centrino kernel module
Because of a noisy fan in my laptop, I need to change CPU frequency and for this task I need to load the appropriate kernel module.
The CPU in my laptop Acer TravelMate 4002WLMi is:
$ cat ...
2
votes
1answer
1k views
Setting CPU frequency guidelines
I'm changing my CPU frequency because of noisy fan.
I used sudo cpufreq-selector -g powersave for this purpose, but I replaced my Linux system Xubuntu with Lubuntu because it utilizes better ...
