Third party cron service

 
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Operating Systems Linux Red Hat Third party cron service
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Old 09-26-2013
What sort of privacy would you want for your scheduled jobs that you don't have already?
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CHRT(1) 							   User Commands							   CHRT(1)

NAME
chrt - manipulate the real-time attributes of a process SYNOPSIS
chrt [options] prio command [arg]... chrt [options] -p [prio] pid DESCRIPTION
chrt 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. The SCHED_RESET_ON_FORK flag for policies SCHED_RR and SCHED_FIFO is supported since Linux 2.6.31. OPTIONS
-a, --all-tasks Set or retrieve the scheduling attributes of all the tasks (threads) for a given PID. -b, --batch Set scheduling policy to SCHED_BATCH (Linux specific). -f, --fifo Set scheduling policy to SCHED_FIFO. -i, --idle Set scheduling 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. -p, --pid Operate on an existing PID and do not launch a new task. -r, --rr Set scheduling policy to SCHED_RR. When policy is not defined the SCHED_RR is used as default. -R, --reset-on-fork Add SCHED_RESET_ON_FORK flag to the SCHED_FIFO or SCHED_RR scheduling policy (Linux specific). -v, --verbose Show status information. -h, --help Display usage information and exit. -V, --version Display version information and exit. USAGE
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 -r -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. NOTES
Only 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. Linux default scheduling policy is SCHED_OTHER. AUTHOR
Written by Robert M. Love. COPYRIGHT
Copyright (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 ALSO
taskset(1), nice(1), renice(1) See sched_setscheduler(2) for a description of the Linux scheduling scheme. AVAILABILITY
The chrt command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. util-linux June 2010 CHRT(1)

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