taskpolicy(8) BSD System Manager's Manual taskpolicy(8)
NAME
taskpolicy -- execute a program with an altered I/O or scheduling policy or change settings of already running process
SYNOPSIS
taskpolicy [-d policy] [-g policy] [-c clamp] [-b] [-t thruput_tier] [-l latency_tier] [-a] program [arg1 [...]]
taskpolicy [-b|-B] [-t thruput_tier] [-l latency_tier] [-p pid]
DESCRIPTION
The taskpolicy program uses the setiopolicy_np(3) and setpriority(2) APIs to execute a program with altered I/O or scheduling policies. All
children of the specified program also inherit these policies.
taskpolicy accepts the following flags and arguments:
-d policy Run the program after calling setiopolicy_np(3) with an iotype of IOPOL_TYPE_DISK, a scope of IOPOL_SCOPE_PROCESS, and the
specified policy. The argument can either be an integer, or a symbolic string like "default" or "throttle", which is inter-
preted case-insensitively.
-g policy Run the program after calling setiopolicy_np(3) with an iotype of IOPOL_TYPE_DISK, a scope of IOPOL_SCOPE_DARWIN_BG, and the
specified policy. The argument is interpreted in the same manner as -d.
-c clamp Run the program using the specified QoS clamp. The argument can be either "utility", "background", or "maintenance", which
is interpreted case-insensitively.
-p pid Change settings for the process specified by pid.
-b Run the program after calling setpriority(2) with a priority of PRIO_DARWIN_BG.
-B Move target process out of PRIO_DARWIN_BG.
-t Set throughput tier of the process to thruput_tier.
-l Set latency tier of the process to latency_tier.
-a Run the program with the resource management policies given to applications.
SEE ALSO
setpriority(2), setiopolicy_np(3)
Darwin June 1, 2019 Darwin