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posix_setrlimit constants
Note:
Please note that some of them may not be available on your system.
Note:
You may wish to read the below notes in conjunction with the manpage for
setrlimit on your specific operating system, as there
is variance in how these limits are interpreted, even across operating
systems that claim to implement POSIX in full.
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POSIX_RLIMIT_AS
(int)
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The maximum size of the process's address space in bytes. See also PHP's
memory_limit configuration
directive.
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POSIX_RLIMIT_CORE
(int)
-
The maximum size of a core file. If the limit is set to 0, no core file
will be generated.
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POSIX_RLIMIT_CPU
(int)
-
The maximum amount of CPU time that the process can use, in seconds.
When the soft limit is hit, a
SIGXCPU signal will be
sent, which can be caught with pcntl_signal.
Depending on the operating system, additional SIGXCPU
signals may be sent each second until the hard limit is hit, at which
point an uncatchable SIGKILL signal is sent.
See also set_time_limit.
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POSIX_RLIMIT_DATA
(int)
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The maximum size of the process's data segment, in bytes. It is
extremely unlikely that this will have any effect on the execution of
PHP unless an extension is in use that calls brk or
sbrk.
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POSIX_RLIMIT_FSIZE
(int)
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The maximum size of files that the process can create, in bytes.
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POSIX_RLIMIT_LOCKS
(int)
-
The maximum number of locks that the process can create. This is only
supported on extremely old Linux kernels.
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POSIX_RLIMIT_MEMLOCK
(int)
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The maximum number of bytes that can be locked into memory.
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POSIX_RLIMIT_MSGQUEUE
(int)
-
The maximum number of bytes that can be allocated for POSIX message
queues. PHP does not ship with support for POSIX message queues, so this
limit will not have any effect unless you are using an extension that
implements that support.
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POSIX_RLIMIT_NICE
(int)
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The maximum value to which the process can be
reniced to. The value
that will be used will be
20 - limit , as resource
limit values cannot be negative.
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POSIX_RLIMIT_NOFILE
(int)
-
A value one greater than the maximum file descriptor number that can be
opened by this process.
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POSIX_RLIMIT_NPROC
(int)
-
The maximum number of processes (and/or threads, on some operating
systems) that can be created for the real user ID of the process.
-
The maximum size of the process's resident set, in pages.
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POSIX_RLIMIT_RTPRIO
(int)
-
The maximum real time priority that can be set via the
sched_setscheduler and
sched_setparam system calls.
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POSIX_RLIMIT_RTTIME
(int)
-
The maximum amount of CPU time, in microseconds, that the process can
consume without making a blocking system call if it is using real time
scheduling.
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POSIX_RLIMIT_SIGPENDING
(int)
-
The maximum number of signals that can be queued for the real user ID of
the process.
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POSIX_RLIMIT_STACK
(int)
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The maximum size of the process stack, in bytes.
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POSIX_RLIMIT_INFINITY
(int)
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Used to indicate an infinite value for a resource limit.
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POSIX_RLIMIT_KQUEUES
(int)
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The maximum number of kqueues this user id is allowed to create (FreeBSD).
Available as of PHP 8.1.0.
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POSIX_RLIMIT_NPTS
(int)
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The maximum number of pseudo-terminals this user id is allowed to create (FreeBSD).
Available as of PHP 8.1.0.
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