Ubuntu :: Disable CPU Scaling Whenever Want?

Jun 15, 2010

I want to be able to disable CPU scaling, whenever I want. The reason is that I run some timing tests, and I want the results to be reproducable (ie the CPU running at the same frequency). I have tried the following on 9.10 and 10.04 (both amd64). I use rcconfig to disable "on demand" (from [URL] but then when I use cpufreq-info tool I get:

[Code]...

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Ubuntu :: CPU Frequency Scaling Always Enabled - How To Disable

Nov 19, 2010

When I boot my machine (using a dual core 2ghz CPU) I always find myself out of "performance" mode (which I need), using only 1ghz per core.While this is easily fixable with "sudo cpufreq-set -g performance", I don't seem to be able to do it before having control of the machine. I would like to be able to boot with my CPU at full power.I would prefer to disable whatever is scaling down my CPUs to having to inject cpufreq-set to change governor. Anyone has any hint?I use default Ubuntu but I boot into a KDE4 desktop. But the same issue happens booting into the Gnome desktop.

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Debian Configuration :: Disable CPU Frequency Scaling In Most Fundamental Way

Jan 18, 2016

I want to turn off frequency scaling permanently and totally in the lowest-level way possible. Is there a kernel command line that can be used or is recompiling the kernel without the governor stuff the only way?

Solved. Just modprobe -r and blacklist the acpi_cpufreq kernel module.

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Ubuntu :: Mint Kept Updating Xulrunner To A New Version Which Disable Firefox-Smooth-Scaling?

Apr 11, 2010

I recently deleted all my Software Sources that were under "Other Software" and all my "Authentication" because Mint kept updating my xulrunner to a new version which would disable Firefox-Smooth-Scaling.Therefore I deleted all my Software Sources that were under "Other Software" and Authentication, and forced Mint to only install the xulrunner which uses Firefox-Smooth-Scaling. Unfortunately, after I deleted the software sources and authentication, now I can't update my system properly and get error messages that keys are missing. I added some software sources back the "Other Software" (someone responded to a previous post of mine on which ones to add), and under the "Authentication" window I tried hitting "Restore Defaults", but it only added two keys. These are screenshots of my Software Sources windows.

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Ubuntu :: CPU Frequency Scaling Not Working

Jan 17, 2010

I have the CPU frequency scaling applet in the panel and it worked fine when I had 8.10 but now that I'm using Karmic, I cant get it to work correctly!

It won't change the speed to what I tell it to. I click on a different speed and it does nothing.

The CPU spins too slowly and videos lag or it spins at full speed and overheats even though I have nothing open! I really need to be able to adjust it.

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Ubuntu :: 10.04 - BIOS Does Not Support CPU Scaling

Jun 26, 2010

I've been trying to get lucid to work on my gateway netbook. The major problem I've seen is that it would overheat (to about 63 C or a little higher, and then the display would go crazy and crash. My BIOS doesn't support cpu scaling. Somewhere in a google search, someone mentioned the 2.6.34 kernel. I had no ideal what I was doing, and I installed this kernel. (could not install headers -- a dependency issue I didn't understand). Tried it, and it booted.

Saw some errors, like timer or something not found and something about a soft reset. However, it boots, and it works, and the temperature is much better (at least for the last 42 minutes: I've not been able to run it that long before). Are those errors likely to cause problems? Are there any issues I should be aware of using a non-standard kernel like this? I am dual booting with 9.10, which works well, and all my serious work is on the 9.10 partitions.

HID compliant mouse
Synaptics PS/2 Port touchPad
Generic PnP Monitor
Atheros AR5B95 Wireless Network Adapter
Realtek PCIe FE Family Controller
AMD Athlon(tm) Processor L110
Realtgek High Definition Audio
Microsoft iSCISI Initator
Gateway LT3103u

As I write, temp is still at 56, but I am getting some intermittent display problems. Should I give up on lucid?

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Ubuntu :: CPU Frequency Scaling Monitor / Fix It?

Jun 28, 2010

I am new to ubuntu. I have just one question, everytime I reboot my laptop the CPU Frequency Scaling Monitor goes back to "On Demand." Why is that and can I also set it so it stays on Performance.

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Ubuntu :: CPU Speed Scaling For AMD 1090T?

Oct 15, 2010

I'm running ubuntu 10.10 64 bit. CPU speed scaling says my CPU (AMD PhenomII 1090T) is not supported, and shows full speed on all cores, regardless of load. I've read that those issues were solved in kernel 2.6.34...

How can I make it work? or do I have to wait for an update?

Motherboard is an ASUS Crossfire IV.

Admins: Feel free to shift this post to another (sub-)forum if necessary, I wasn't sure where to put it.

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Ubuntu :: Smooth Image Scaling In FF3?

Oct 24, 2010

i face problem with Firefox 3.6.11: smooth image scaling doesn't work. When i zoom in websites (ctrl +), images are not anti aliased, but appear pixelated, which is very ugly.

What I found out about so far, this seems not to be a FF problem (FF3 should support smooth image scaling), but a problem with the video driver, who tells X it could do smooth image scaling automatically but it cant. There is also a "bug" fix for the FF:

launchpad.net/~firefox-smooth-scaling/+archive/ppa I putted this to my package sources and made a system update. But smooth image scaling still doesn't work

[Code]...

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Ubuntu :: Set Cpu Scaling To Ignore BOINC?

Nov 2, 2010

I am trying to set up my cpu freq. scaling to ignore BOINC. From what google has shown me this is done by setting a value of 1 for ignore_nice_load. However the location of said value does not seem to be the same in 10.04 as in the results from google. How do i set this or is there a better way to keep idle processes like BOINC from increasing the my cpu frequency?

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Ubuntu :: HP G60-120US Processor Scaling?

Dec 31, 2010

Basic Info: Ubuntu 10.10, AMD RM-70 2GHZ Processor, HP G60-120US, Bios F54. I'm unable to scale my processor (either core) using the applet in the menu bar. Every time I try, I select 2GHZ, and re-open; then it's displayed that 500MHZ was selected. I'm unable to pick any speed, the computer has a mind of it's own in that sense. It's essentially stuck at 500MHZ for 98% of the uptime, which makes it impossible to do anything more than web browsing. Ex: I tried watching an HD video, I watched 5 min, and 1,400 out of the 10,000 or so were dropped!

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Ubuntu :: 11.04 - Substitute For CPU Scaling Applet?

Apr 29, 2011

Since the new Unity in Ubuntu 11.04 doesn't work with applets, like GNOME, I've lost an useful applet to choose the operating clock of my CPU as well as power profiles (Performance, Conservative, On Demand etc.).

I've looked into Ubuntu Software Center but couldn't find anything similar.

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Ubuntu Multimedia :: Can't Get GPU Scaling Method To Save

May 18, 2010

I managed to half fix my earlier problem of being unable to clone my desktop monitor to my TV. I set the configuration to TwinView, and the resolution to the same as my desktop (Doh) and that seemed to at least get my desktop the way it used to be.

The problem now is the TV. It's cutting off a lot of pixels, and I can get it almost to fit if I enable flat panel scaling and set GPU Scaling Method to "Centered". However, when I restart the X server, it always returns to "Stretched". I've tried saving it from nvidia-settings (nothing seems to happen to the xorg.conf file,) and ala [URL] s have tried to put some version of

Code:
Option "FlatPanelProperties" "DFP-0: Scaling = Centered"
or
Code:
Option "FlatPanelProperties" "Scaling = Centered"

[Code].....

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Ubuntu :: CPU Scaling Broken While Playing Video

Jul 26, 2010

I have a Core 2 Duo T9600. I noticed video playing performance has been really bad lately, and videos that used to work fine now stuttered. I would say it started happening 2-3 weeks ago. I discovered the culprit is that the CPU is scaling down to 800Mhz and sticking there. Running cpufreq-info yields:

[Code]...

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Ubuntu :: CPU Frequency Scaling Monitor & Hyperthreading?

Sep 2, 2010

I recently installed 10.04 and really like it so far, however I was wondering if it is possible to scale all hypertheading cores at once, currently I am using an applet for each and have to use several clicks to get into the desired powerstate.

I have read that with dual cores you will not have the option to go into different powerstates because it scales all cores at once, however the logical cores that show up with hyperthreading allow each to have a different power state, and will show up as different states if I use cpufreq-info in the terminal, so it seems like it is allowing it.

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Ubuntu :: Configuring Cpu Scaling To Set To Ondemand Upon Reboot

Sep 26, 2010

I know that this has been a frequent discussion post and I have read a large portion of the posts but none of them have fixed this problem for me. My computer seems to default to performance upon reboot (and yes I have waited the 60 seconds it should take to switch to ondemand). I have tried a number of the ideas posted throughout the web but have been unable to set the default upon reboot. Here is my current /etc/init.d/ondemand script:

Code:
### BEGIN INIT INFO
# Provides: ondemand
# Required-Start: $remote_fs $all
# Required-Stop:

[Code]....

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Ubuntu :: Taking Control Of CPU Frequency Scaling In 11.04?

Jun 24, 2011

Is there an easy way to take control of CPU frequency scaling in 11.04? There use to be an indicator applet but thats gone

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Fedora :: 13 - CPU Not Scaling Frequency?

Jun 16, 2010

I am not entirely convinced that my CPU is actually changing frequency as it is meant to. It sometimes changes frequency, but most of the time it is stuck on 800MHz even when doing cpu intensive tasks. Here is information that may or may not be of help:

cat /proc/cpuinfo
processor: 0
vendor_id: GenuineIntel

[code]....

I notice here that it says between 800 and 800, but does that mean it is currently at 800, or can only be 800.

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Debian :: CPU Scaling Not Working?

May 30, 2010

In order to save power and to cool down my Debian system a little bit, I installed cpufregs the other day and changed it the cpu gonever to on_demand.

Well I came back to the box today and powertop tells me that the cpu has been running at 2.66ghz (max freq) for 99/99% of the time.

Running cpufreq says this: Code: analyzing CPU 0:
driver: p4-clockmod
CPUs which need to switch frequency at the same time: 1
hardware limits: 333 MHz - 2.67 GHz

[Code].....

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Ubuntu :: Setting Processor Scaling To Switch Automatically?

Feb 8, 2010

In what way I can set the processor scaling to switch automatically on performance while the pc is connected to the AC.

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Ubuntu :: Lucid - CPU Scaling Not Working Anymore (Powernow-K8)

May 9, 2010

In Lucid I cannot get CPU scaling to work anymore, in previous Ubuntu releases this was not a problem with the same hardware (AMD Phenom 9500 Quad). I used to load module 'powernow-k8' and 'powernowd' to make it work, but it seems 'powernow-k8' is not available in Lucid. Anyone who has cpu scaling working in Lucid?

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Ubuntu :: Keep CPU Frequency Scaling On PERFORMANCE Mode Through Reboot?

Jul 30, 2010

Is there any possible way to keep my CPU frequency scaling on PERFORMANCE mode through a reboot? Ubuntu likes to default it back to ONDEMAND all the time.

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Ubuntu :: CPU Scaling Freq Indictor Text Color

Oct 12, 2010

Is there a way to edit the color of the text to white so I am able to see it? Example of the current text color in this attachment, see top right corner first scaling icon next to system monitor;

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Ubuntu :: Set Cpu To Powersave Using CPU Frequency Scaling Applet - Set Permanently?

Oct 13, 2010

Trying to set my cpu to Powersave using the CPU Frequency Scaling applet. When I set it to powersave, it goes back to ondemand on its own. On the earlier versions of Ubuntu, I used to be able to set it from the main menu: system>powermanagement, but with 10.10, I don't get that option. Is there any way that I can set it to powersave permanently? I was also able to set it with Ubuntu Tweak, but it does not have that option either.

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Ubuntu :: CPU Frequency Scaling Monitor Doesn't Work?

Jun 1, 2011

I have recently installed Ubuntu 11.04 on my PC with these configuration:CPU: AMD Athlon 7750 Black EditionRAM: 2GB 1066 MHzVGA: ATI Radeon HD 3200 (on AMD 780G)After I installed Natty Narwhal I felt that my CPU runs at the highest clock all the time (2.7GHz), even if I don't have any program run. I tried all settings for AMD Cool'n'Quiet from mainboard BIOS, but nothing's changed. I installed "CPU Frequency Scaling Monitor" to manually change CPU clock. It recognizes two clock for my CPU, 2.7GHz and 1.35Ghz plus 4 other options; Conservative, Ondemand, Performance and Powersave but the CPU indicator doesn't change on every option!

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General :: Frequecny Scaling Disabled Due To Cpu Bug?

Nov 15, 2010

i would ask how to fix " frequency scaling disabled due to cpu bug" that come when my linux server is booting. although it just a WARNING buti want to fix it.this show up after i move my virtual machine from my Acer Veriton Desktop PC with Centos 5and VMware 6 for linux into my HP Proliant server with windows 2003 and VMware 6 for windows

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Slackware :: Activating Cpu Frequency Scaling ?

May 15, 2011

Slackware64 13.37 multilib, generic kernel (full install)

BIOS: EIST and C3/C6/C7 State support are enabled.

I'm trying to activate cpu frequency scaling following the tutorial on slackwiki: [url]

I can't load any module.

Code:

I've tried all of them but the error is the same. I also rebooted to the huge kernel, however, it gave me the same error.

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OpenSUSE :: Firefox With Smooth Scaling Of Images?

Jul 1, 2010

I can't find a package of Firefox in OBS which is compiled with smooth scaling of images option turned on (as is the case in Windows version where this option is turned on by default). Could someone provide me a link from where I can get this package.

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Software :: Aspect Ratio Scaling With Intel GPU's?

Mar 5, 2010

I have a friend who runs Ubuntu 9.10 on a laptop that has a 16:9 screen (1366x768) and an Intel 4500m GPU. I'm trying to figure out how to get 4:3 resolutions to display in their proper aspect ratio (black bars on either side of the image), rather than stretching to fill the whole screen. This is mostly for playing older games in fullscreen. I've tried messing with xorg.conf and xrandr a bit, but I didn't have much luck.

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Programming :: Scaling Of Directory Entry Lookup?

Feb 28, 2011

I need to create and access a very large number of directories (and by large I mean millions). Each directory's name consists only of numbers, which are incremented every time a new directory is created (so there will be directory 1, 2, and so on).Of course I could just dump all these directories under the same parent directory, but I reckon I would run into filesystem limits. Moreover, I presume that entry lookup is not a O(1) operation, which means that lookup does not scale well.

One solution is to use some sort of prefix tree for storing the data. In this scheme, the data for directory "1234" would actually be stored in "/1/2/3/4".This solution has the advantage that each subtree never has more than 10 entries, but the disadvantage of requiring as many individual lookups as the length of the path.There are also intermediate solutions: using a maximum of 100 entries per directory, "1234" would become "/12/34", per example.In order to choose the best scheme, I must know more about the scalability of directory lookup under Linux. What's the maximum reasonable number of entries for a directory before lookup becomes too slow? Does someone know exactly what are the limitations of the algorithm used for directory lookup?

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