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[nand]

Is it possible to allow changing priority for users (not root) on linux?

bash-2.05b$ nice -n -5 ./sdf
nice: cannot set priority: Permission denied


i triend to add to etc/security/limits.conf

user hard priority -10
user soft priority -10


bot he still cant change priority by nice or renice

1. any way to do it?

2. any way to set default priority for proceses runned by this user?

[ABliss]

From /etc/security/limits.conf
# - priority - the priority to run user process with

user hard priority 0

would set the defaults priority of this user's process to 0. In most Unices (someone correct me if I'm wrong), user processes are not allowed to have a priority below 0. Negative priorities can be used by root only and are meant for system-critical processes. By running an application with a negative priority, you are going to block the CPU from doing important things.

[Mr.TOXIC]

Hola

You can can give the user privileges to nice or renice by adding him in the sudoers file (eg: /etc/sudoers).

Edit the sudoer file and add the following....

username ALL= NOPASSWD:/usr/bin/renice,/bin/nice

The user can execute renice or nice using

sudo renice -options
sudo nice -options

[wKkaY]

Originally posted by ABliss
In most Unices (someone correct me if I'm wrong), user processes are not allowed to have a priority below 0. Negative priorities can be used by root only and are meant for system-critical processes.

for Linux and FreeBSD, any process regardless of user can have a negative nice. however, only root can set (by means of nice or renice) a process's nice to below 0 or below the current nice, whichever is higher.