[Overview][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'process' (#fcl)

# TPROCESS.Priority

Priority at which the process is running.

## Declaration

Source position: processbody.inc line 155

`published property TPROCESS.Priority : TProcessPriority read FProcessPriority write FProcessPriority;`

## Description

Priority determines the priority at which the process is running.

Priority | Meaning
--- | ---
ppHigh | The process runs at higher than normal priority.
ppIdle | The process only runs when the system is idle (i.e. has nothing else to do)
ppNormal | The process runs at normal priority.
ppRealTime | The process runs at real-time priority.

Note that not all priorities can be set by any user. Usually, only users with administrative rights (the root user on Unix) can set a higher process priority.

On UNIX, the process priority is mapped on Nice values as follows:

Priority | Nice value
--- | ---
ppHigh | 20
ppIdle | 20
ppNormal | 0
ppRealTime | -20

## See also

TProcessPriority |  | type determining the priority of the newly started process.