Differential D57259 Diff 178658 lib/libsys/getrlimit.2

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lib/libsys/getrlimit.2

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	.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL			.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS			.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)			.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT			.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY			.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF			.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	.\" SUCH DAMAGE.			.\" SUCH DAMAGE.
	.\"			.\"
	.Dd July 25, 2024			.Dd May 26, 2026
	.Dt GETRLIMIT 2			.Dt GETRLIMIT 2
	.Os			.Os
	.Sh NAME			.Sh NAME
	.Nm getrlimit ,			.Nm getrlimit ,
	.Nm setrlimit			.Nm setrlimit
	.Nd control maximum system resource consumption			.Nd control maximum system resource consumption
	.Sh LIBRARY			.Sh LIBRARY
	.Lb libc			.Lb libc
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	.Xr tuning 7			.Xr tuning 7
	for a complete description of this sysctl.			for a complete description of this sysctl.
	.It Dv RLIMIT_UMTXP			.It Dv RLIMIT_UMTXP
	The limit of the number of process-shared posix thread library objects			The limit of the number of process-shared posix thread library objects
	allocated by user id.			allocated by user id.
	.It Dv RLIMIT_VMEM			.It Dv RLIMIT_VMEM
	An alias for			An alias for
	.Dv RLIMIT_AS .			.Dv RLIMIT_AS .
				.It Dv RLIMIT_VMM
				The maximum number of virtual machines a user can have running
				simultaneously.
	.El			.El
	.Pp			.Pp
	A resource limit is specified as a soft limit and a hard limit.			A resource limit is specified as a soft limit and a hard limit.
	When a soft limit is exceeded, a process might or might not receive a signal.			When a soft limit is exceeded, a process might or might not receive a signal.
	For example, signals are generated when the cpu time or file size is exceeded,			For example, signals are generated when the cpu time or file size is exceeded,
	but not if the address space or RSS limit is exceeded.			but not if the address space or RSS limit is exceeded.
	A program that exceeds the soft limit is allowed to continue execution until it			A program that exceeds the soft limit is allowed to continue execution until it
	reaches the hard limit, or modifies its own resource limit.			reaches the hard limit, or modifies its own resource limit.
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