Query: chrt
OS: suse
Section: 1
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
CHRT(1) Linux User's Manual CHRT(1)NAMEchrt - manipulate real-time attributes of a processSYNOPSISchrt [options] prio command [arg]... chrt [options] -p [prio] pidDESCRIPTIONchrt(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, SCHED_BATCH, or SCHED_IDLE) and priority can be set and retrieved. The SCHED_BATCH policy is supported since Linux 2.6.16. The SCHED_IDLE policy is supported since Linux 2.6.23.OPTIONS-p, --pid operate on an existing PID and do not launch a new task -b, --batch set scheduling policy to SCHED_BATCH (Linux specific) -f, --fifo set scheduling policy to SCHED_FIFO -i, --idle set schedulng policy to SCHED_IDLE (Linux specific) -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 exitUSAGEThe 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 pidPERMISSIONSA user must possess CAP_SYS_NICE to change the scheduling attributes of a process. Any user can retrieve the scheduling information.NOTESOnly SCHED_FIFO, SCHED_OTHER and SCHED_RR are part of POSIX 1003.1b Process Scheduling. The other scheduling attributes may be ignored on some systems.AUTHORWritten by Robert M. Love.COPYRIGHTCopyright (C) 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 PARTICU- LAR PURPOSE.SEE ALSOtaskset(1), nice(1), renice(1) See sched_setscheduler(2) for a description of the Linux scheduling scheme.AVAILABILITYThe chrt command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/. schedutils Apr 2003 CHRT(1)
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