Tutorials Point


  Unix for Beginners
  Unix Shell Programming
  Advanced Unix
  Unix Useful References
  Unix Useful Resources
  Selected Reading

Copyright © 2014 by tutorialspoint



  Home     References     Discussion Forums     About TP  

chrt - Unix, Linux Command


previous next AddThis Social Bookmark Button


Advertisements

NAME

chrt - manipulate real-time attributes of a process

SYNOPSIS

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

TagDescription
-p, --pid
  operate on an existing PID and do not launch a new task


-b, --batch

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

TagDescription
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. Love
This 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.

previous next Printer Friendly

Advertisements


  

Advertisements