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chrt - Unix, Linux Command
NAME
chrt - manipulate real-time attributes of a processSYNOPSIS
chrt [options] [prio] [pid | command [arg]...]DESCRIPTION
chrt(1) sets or retrieves the real-time scheduling attributes of an existing PID or runs COMMAND with the given attributes. Both policy (one of SCHED_OTHER, SCHED_FIFO, SCHED_RR, or SCHED_BATCH) and priority can be set and retrieved.
OPTIONS
| Tag | Description |
|---|---|
| -p, --pid | |
| operate on an existing PID and do not launch a new task | |
|
| set scheduling policy to SCHED_BATCH |
| -f, --fifo | |
| set scheduling policy to SCHED_FIFO | |
| -m, --max | |
| show minimum and maximum valid priorities, then exit | |
| -o, --other | |
| set policy scheduling policy to SCHED_OTHER | |
| -r, --rr | |
| set scheduling policy to SCHED_RR (the default) | |
| -h, --help | |
| display usage information and exit | |
| -v, --version | |
| output version information and exit | |
USAGE
| Tag | Description |
|---|---|
| The default behavior is to run a new command:: | |
| chrt [prio] [command] [arguments] | |
| You can also retrieve the real-time attributes of an existing task: | |
| chrt -p [pid] | |
| Or set them: | |
| chrt -p [prio] [pid] | |
PERMISSIONS
A user must possess CAP_SYS_NICE to change the scheduling attributes of a process. Any user can retrieve the scheduling information.AUTHOR
Written by Robert M. Love.REPORTING BUGS
Report bugs to <rml@tech9.net>.COPYRIGHT
Copyright © 2004 Robert M. LoveThis is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO
See sched_setscheduler(2) for a description of the Linux scheduling scheme.
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