The cpu tag has no wiki summary.
3
votes
2answers
754 views
Hyperthreading not detected by Linux
Problem solved!
After speaking to Dell's support they realized that I had to remove the option acpi=off from my /boot/grub/menu.1st config file. Apparently ACPI support is essential for ...
2
votes
2answers
45 views
Externaly limiting number of CPU cores used
I need to externally limit a process/session to a certain number of cores.
Are there any other possibilities than CPU affinity (I don't like the need to specify the actual cores) and cgroups (hard to ...
2
votes
2answers
273 views
Measuring CPU and Memory per user to distribute “cost” of a server
How should I implement approximately correct per-user monitoring on a server? I want a way to split the cost of a server between the users based on their usage. On newer machines (RHEL6) I would use ...
-1
votes
2answers
96 views
Getting cpu usage same every time.
When I execute following command to get cpu usage , I get nice + user cpu usage.
top -b -n1 | grep "Cpu(s)" | awk '{print $2 + $4}'
Output:
14.5
Here I am getting problem is that the output ...
5
votes
1answer
252 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 ...
0
votes
1answer
202 views
Limit cpu and memory usage for php-fpm and nginx processes in centos
I want to Limit cpu and memory usage for php-fpm and nginx processes in centos.
I came across following tools
cpulimit
cggroups
memory resource locater
which will more efficient and how can I ...
3
votes
0answers
64 views
Exynos 5 DVFS or turning off cores in Ubuntu - Scaling frequency for one of the cores only (dual core) (cpufreq)
I was wondering if there is possible to scale only one of the cpu cores in the A15 in Exynos 5 ? I have tried using e.g cpufreq-set -c 1 -f 500MHz, but both cores are set to the same frequency. When ...
2
votes
0answers
55 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 ...
2
votes
0answers
203 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 ...
1
vote
0answers
72 views
FreeBSD 9,1 - upowerd's cpu consumption off the roof and causes OS to restart
I've been experiencing a really annoying problem with a FreeBSD setup on my laptop. The setup is as follows:
FreeBSD 9.1 / KDE4 desktop / Broadcom wireless 4313 through NDIS / Intel GPU with the new ...
1
vote
0answers
294 views
How can a single thread use 200% CPU usage?
From the screenshot above of htop output you can see that mysql is apparently using 204% of CPU usage (this is a CentOS server with dual quad-core Intel Xeons).
However only one core (8) is doing ...
1
vote
0answers
92 views
eldoc makes emacs use 100% cpu
when i use eldoc,i add this to .emacs:
(add-hook 'emacs-lisp-mode-hook 'turn-on-eldoc-mode)
(add-hook 'lisp-interaction-mode-hook 'turn-on-eldoc-mode)
(add-hook 'ielm-mode-hook ...
0
votes
0answers
40 views
Prevent Java to escalate CPU usage on Slackware64?
I use Slackware64-current on my work laptop and though I love running Slackware, sometimes it hangs on me near to the point of starting considering falling back to Windows.
I develop on Java and use ...
0
votes
0answers
37 views
Problem limiting the resources of a process
I want to limit the memory and cpu a process can use, because it is overloading my PC.
I open a terminal, run ulimit -v 4192000, run the process, open another terminal and run cpulimit -p ...
