prlimit - get and set process resource limits
prlimit [options]
[--resource[=limits]
[--pid PID]
prlimit [options]
[--resource[=limits] command
[argument...]
Given a process ID and one or more resources, prlimit tries
to retrieve and/or modify the limits.
When command is given, prlimit will run this command
with the given arguments.
The limits parameter is composed of a soft and a hard
value, separated by a colon (:), in order to modify the existing values. If
no limits are given, prlimit will display the current values.
If one of the values is not given, then the existing one will be used. To
specify the unlimited or infinity limit (RLIM_INFINITY), the -1 or
'unlimited' string can be passed.
Because of the nature of limits, the soft limit must be lower or
equal to the high limit (also called the ceiling). To see all available
resource limits, refer to the RESOURCE OPTIONS section.
- soft:hard
Specify both limits.
- soft: Specify only
the soft limit.
- :hard Specify only the hard limit.
- value Specify both
limits to the same value.
-
- -h, --help
- Display help text and exit.
- --noheadings
- Do not print a header line.
- -o, --output
list
- Define the output columns to use. If no output arrangement is specified,
then a default set is used. Use --help to get a list of all
supported columns.
- -p, --pid
- Specify the process id; if none is given, the running process will be
used.
- --raw
- Use the raw output format.
- --verbose
- Verbose mode.
- -V, --version
- Display version information and exit.
- -c,
--core[=limits]
- Maximum size of a core file.
- -d,
--data[=limits]
- Maximum data size.
- -e,
--nice[=limits]
- Maximum nice priority allowed to raise.
- -f,
--fsize[=limits]
- Maximum file size.
- -i,
--sigpending[=limits]
- Maximum number of pending signals.
- -l,
--memlock[=limits]
- Maximum locked-in-memory address space.
- -m,
--rss[=limits]
- Maximum Resident Set Size (RSS).
- -n,
--nofile[=limits]
- Maximum number of open files.
- -q,
--msgqueue[=limits]
- Maximum number of bytes in POSIX message queues.
- -r,
--rtprio[=limits]
- Maximum real-time priority.
- -s,
--stack[=limits]
- Maximum size of the stack.
- -t,
--cpu[=limits]
- CPU time, in seconds.
- -u,
--nproc[=limits]
- Maximum number of processes.
- -v,
--as[=limits]
- Address space limit.
- -x,
--locks[=limits]
- Maximum number of file locks held.
- -y,
--rttime[=limits]
- Timeout for real-time tasks.
The prlimit system call is supported since Linux 2.6.36, older
kernels will break this program.
Davidlohr Bueso <dave@gnu.org> - In memory of Dennis M. Ritchie.
The prlimit command is part of the util-linux package and is
available from https://www.kernel.org/pub/linux/utils/util-linux/.