chrt man page
chrt — manipulate the real-time attributes of a process chrt sets or retrieves the real-time scheduling attributes of an existing pid, or runs command with the given attributes. Set scheduling policy to SCHED_OTHER. This is the default Linux scheduling policy. Set scheduling policy to SCHED_FIFO. Set scheduling policy to SCHED_RR. When no policy is defined, the SCHED_RR is used as the default. Set scheduling policy to SCHED_BATCH (Linux-specific, supported since 2.6.16). The priority argument has to be set to zero. Set scheduling policy to SCHED_IDLE (Linux-specific, supported since 2.6.23). The priority argument has to be set to zero. Set scheduling policy to SCHED_DEADLINE (Linux-specific, supported since 3.14). The priority argument has to be set to zero. See also --sched-runtime, --sched-deadline and --sched-period. The relation between the options required by the kernel is runtime <= deadline <= period. chrt copies period to deadline if --sched-deadline is not specified and deadline to runtime if --sched-runtime is not specified. It means that at least --sched-period has to be specified. See sched(7) for more details. Specifies runtime parameter for SCHED_DEADLINE policy (Linux-specific). Specifies period parameter for SCHED_DEADLINE policy (Linux-specific). Specifies deadline parameter for SCHED_DEADLINE policy (Linux-specific). Add SCHED_RESET_ON_FORK flag to the SCHED_FIFO or SCHED_RR scheduling policy (Linux-specific, supported since 2.6.31). Set or retrieve the scheduling attributes of all the tasks (threads) for a given PID. Show minimum and maximum valid priorities, then exit. Operate on an existing PID and do not launch a new task. Show status information. Display version information and exit. Display help text and exit. A user must possess CAP_SYS_NICE to change the scheduling attributes of a process. Any user can retrieve the scheduling information. 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. nice(1), renice(1), taskset(1), sched(7) See sched_setscheduler(2) for a description of the Linux scheduling scheme. The chrt command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/. pchrt(1), sched(7), sched_setattr(2), sched_setscheduler(2), spausedd(8), taskset(1).Synopsis
chrt [options] priority command [argument...]
chrt [options] -p [priority] pidDescription
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