How To Install schedtool on Ubuntu 18.04
Introduction
In this tutorial we learn how to install schedtool on Ubuntu 18.04.
What is schedtool
schedtool is:
Schedtool can query or alter a process’ scheduling policy in Linux, specifically assigning SCHED_NORMAL, _FIFO, _RR, _BATCH, _ISO or _IDLEPRIO. It can set static priority for _FIFO and _RR. Setting CPU-affinity and (re)nicing is also possible, making schedtool the definitive interface to Linux scheduler.
It can be used to avoid skips and glitches in A/V applications, to lock processes onto given CPUs on SMP/NUMA systems, which may be beneficial for networking or benchmarks, or to adjust nice-levels of lesser important jobs to maintain a high amount of interactive responsiveness under high load. It is also handy to manage realtime processes.
If you don’t know about scheduling policies, you probably don’t want to use this program - or learn and read “man sched_setscheduler”.
Some supported scheduling policies (such as SCHED_ISO, or SCHED_IDLEPRIO) need a patched kernel (eg. Con Kolivas’ -ck patchset).
There are three methods to install schedtool on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install schedtool Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install schedtool using apt-get by running the following command:
sudo apt-get -y install schedtool
Install schedtool Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install schedtool using apt by running the following command:
sudo apt -y install schedtool
Install schedtool Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install schedtool using aptitude by running the following command:
sudo aptitude -y install schedtool
How To Uninstall schedtool on Ubuntu 18.04
To uninstall only the schedtool package we can use the following command:
sudo apt-get remove schedtool
Uninstall schedtool And Its Dependencies
To uninstall schedtool and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove schedtool
Remove schedtool Configurations and Data
To remove schedtool configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge schedtool
Remove schedtool configuration, data, and all of its dependencies
We can use the following command to remove schedtool configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge schedtool
References
Summary
In this tutorial we learn how to install schedtool package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
