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Showing posts from June 1, 2009

How To Limit CPU Usage Per Process

You can use the cpulimit to limit the real time cpu usage of a process. This limitation of cpu usage is done in term of percentage and not in term of cpu time. cpulimit only act on the real cpu usage and not any scheduling criteria or nice value. cpulimit has been made to adapt itself dynamically to the overall system load. Steps to Install cpulimit: # cd /tmp # wget 'http://downloads.sourceforge.net/cpulimit/cpulimit-1.1.tar.gz' # tar cpulimit-1.1.tar.gz # cd cpulimit-1.1 # make # cp cpulimit /usr/local/sbin/ # rm -rf cpulimit* For Debian / Ubuntu Linux users. Type the following command to install cpulimit: $ sudo apt-get update $ sudo apt-get install cpulimit How do I use cpulimit? To limit CPU usage of the process called firefox to 30%, enter: # cpulimit -e firefox -l 30 To limit CPU usage of the process to 30% by using its PID, enter: # cpulimit -p 1313 -l 30 NOTE : cpulimit should run at least with the same user running the controlled process. But it is much better if y...