$ cpufreq-set --help. You may need to set you profile limits/ performance is default 300MHz to 1Ghz just like ondemand, but for some reason it is always 1GHz whenever I look.
On Thu, Sep 11, 2014 at 3:47 PM, John Syn <[email protected]> wrote: > > From: <[email protected]> > Reply-To: "[email protected]" <[email protected]> > Date: Thursday, September 11, 2014 at 3:35 PM > To: "[email protected]" <[email protected]> > Subject: Re: [beagleboard] Re: color ball tracking with opencv on BBB > > I was able to build and install the same version of openCV (2.4.9) on BBB > debian as on my desktop Ubuntu by using an external USB memory stick. > Now I have a problem with changing CPU frequency (as I would like to > increase it from 300MHz to 1GHz) > > debian@beaglebone:~$ cpufreq-info > cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 > Report errors and bugs to [email protected], please. > analyzing CPU 0: > driver: generic_cpu0 > CPUs which run at the same hardware frequency: 0 > CPUs which need to have their frequency coordinated by software: 0 > maximum transition latency: 300 us. > hardware limits: 300 MHz - 1000 MHz > available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz > available cpufreq governors: conservative, ondemand, userspace, > powersave, performance > current policy: frequency should be within 300 MHz and 1000 MHz. > The governor "ondemand" may decide which speed to use > within this range. > * current CPU frequency is 300 MHz.* > cpufreq stats: 300 MHz:97.20%, 600 MHz:0.20%, 800 MHz:0.06%, 1000 > MHz:2.55% (35) > > debian@beaglebone:~$ sudo cpufreq-set -g GOV > *Error setting new values*. Common errors: > - Do you have proper administration rights? (super-user?) > - Is the governor you requested available and modprobed? > - Trying to set an invalid policy? > - Trying to set a specific frequency, but userspace governor is not > available, > for example because of hardware which cannot be set to a specific > frequency > or because the userspace governor isn't loaded? > debian@beaglebone:~$ > > William just explained how to do this earlier today: > > *sudo cpufreq-set -g performance* > > Regards, > John > > > > What am I doing wrong? > > Jan > > On Wednesday, 10 September 2014 12:52:11 UTC+10, Brandon I wrote: >> >> And, here are some compile flags you'll want to include/force: >> http://www.eliteraspberries.com/blog/2013/09/cflags-for-numerical- >> computing-on-the-beaglebone-black.html >> >> >> On Tue, Sep 9, 2014 at 7:16 PM, Brandon I <[email protected]> wrote: >> >>> I'm not sure that newer open cv can be compiled on the raspberry or >>> beaglebone due to the limited ram. You'll probably have to cross compile. >>> >>> On Tue, Sep 9, 2014 at 5:56 PM, <[email protected]> wrote: >>> >>>> Thanks for that link, it is very usefull. >>>> In a meantime my attempt to install a newer version of opencv >>>> (following the instructions from here http://robertcastle.com/2014/ >>>> 02/installing-opencv-on-a-raspberry-pi/0) has failed firstly with >>>> cmake-curses-gui not working (empty database?) and after that (using >>>> command line cmake) the building stopped with a error message of not enough >>>> memory. >>>> Jan >>>> >>>> On Tuesday, September 9, 2014 11:03:58 AM UTC+10, [email protected] >>>> wrote: >>>>> >>>>> Hi, >>>>> >>>>> I need to implement tracking of color ball with opencv on BBB. >>>>> I have a rev.C BBB with latest (default Debian) including opencv 2.3.1 >>>>> On my desktop Ubuntu I have installed opencv 2.4.9 >>>>> To check the initial performance I used the example webcam program >>>>> from the book "Practical OpenCV" listing 4-4 p.34 playing >>>>> the video from USB camera (Logitech C920) >>>>> I need a resolution of 640x480. >>>>> The problem is with a speed on BBB, having a significant delay. It's >>>>> good on a desktop PC. >>>>> >>>>> I would like to ask for advice how to improve the performance on BBB >>>>> if possible. >>>>> >>>>> Jan >>>>> >>>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to a topic in the >>>> Google Groups "BeagleBoard" group. >>>> To unsubscribe from this topic, visit https://groups.google.com/d/ >>>> topic/beagleboard/fTan4VKv1no/unsubscribe. >>>> To unsubscribe from this group and all its topics, send an email to >>>> [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >> -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
