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chrt:tldr:69d15
chrt: Display attributes of all threads of a process.
$ chrt --all-tasks --pid ${PID}
try on your machine
The command chrt --all-tasks --pid ${PID}
is used to set or retrieve the scheduling policy and priority of a specified process with a given Process ID (PID).
Let's break down the command and its options:
chrt
is the command itself, which is used to manipulate process scheduling attributes.--all-tasks
option is used to include all tasks (threads) of the specified process in the command's operation. By default, only the main thread of the process is considered.--pid ${PID}
option specifies the Process ID (PID) of the process to be targeted. Here,${PID}
is a placeholder that needs to be replaced with an actual PID.
Depending on how the command is used, it can perform different tasks:
-
Retrieve the scheduling policy and priority:
- When used without any additional options, the command will display the current scheduling policy and priority of the specified process.
- For example,
chrt --all-tasks --pid 1234
will show the scheduling policy and priority of the process with PID 1234.
-
Set the scheduling policy and priority:
- By using the
--sched-policy
and--sched-priority
options along with the command, you can set the scheduling policy and priority of the specified process. - For example,
chrt --all-tasks --pid 1234 --sched-policy SCHED_FIFO --sched-priority 99
will set the scheduling policy of the process with PID 1234 to First-In-First-Out (SCHED_FIFO) and assign it a priority of 99.
- By using the
Note: The available scheduling policies and priorities may vary depending on the system and kernel version.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.