Nice level of process

Nice:

It is the method of prioritizing a process in terms of CPU and Memory.

Nice level ranges from -20 to 19. Where -20 is the highest priority and 19 is the least priority.

List the nice level of process

# ps axo pid, comm, nice   =>  Will return the process id, command, nice level


Set nice level to a process

# nice –n -10 <<Process_name>>




set the nice level of a particular running process
# renice –n 12 <<PID>>



set the nice level of all running process

 # renice –n 13 ${pgrep <<process_name>>}


Note: Only privileged user can set the nice level