Run Process With Modified Scheduling Priority ( nicenesses )
You can use the nice command to run a program with modified scheduling priority / nicenesses. Nicenesses range at least from -20 (resulting in the most favorable scheduling) through 19 (the least favorable). The default behavior is to increase the niceness by 10.
A niceness should not be confused with a scheduling priority, which lets applications determine the order in which threads are scheduled to run. Unlike a priority, a niceness is merely advice to the scheduler, which the scheduler is free to ignore.
nice syntax (/bin/nice command)
/bin/nice -n NUM
Add integer NUM (-20 to 19) to the niceness.
WARNING! There are multiple versions of the nice command. One built in to the shell, and one in /bin/nice. The syntax may be diffrent on your system. Refer your shell and /bin/nice command man page for details.
Change niceness by 3
Type the command as follows:
$ /bin/nice -n 3 command-name
Only a privileged user may run a process with lower niceness:
$ /bin/nice -n -1 command-name
Shell in build nice command syntax
If you use the csh or tcsh or bash, the syntax is as follows:
nice +n command
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