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ionice:tldr:ba374
The ionice
command is used to control the disk I/O (Input/Output) priority for a specific process on Linux systems. The -p
option is used to specify the process ID (pid) of the process for which the disk I/O priority needs to be managed. ${pid}
in this case is a placeholder for the actual process ID.
The disk I/O priority determines the amount of access a process has to the storage devices, such as hard disks, in terms of read and write operations. The ionice
command helps in prioritizing or limiting the disk I/O usage of a specific process. By default, all processes have the same priority level, but using ionice
allows you to adjust this priority.
For example, if you want to set the disk I/O priority of a process with process ID 1234, you would use the command: ionice -p 1234
.
Depending on the system configuration, this command may require administrative privileges, so it might need to be executed with sudo
or as the root user.