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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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