docs::api::Apache2::Resource(3pm)
NAME
Apache2::Resource - Limit resources used by httpd children
Synopsis
PerlModule Apache2::Resource
# set child memory limit in megabytes
# default is 64 Meg
PerlSetEnv PERL_RLIMIT_DATA 32:48
# linux does not honor RLIMIT_DATA
# RLIMIT_AS (address space) will work to limit the size of a process
PerlSetEnv PERL_RLIMIT_AS 32:48
# set child cpu limit in seconds
# default is 360 seconds
PerlSetEnv PERL_RLIMIT_CPU 120
PerlChildInitHandler Apache2::Resource
Description
"Apache2::Resource" uses the "BSD::Resource" module, which uses the C
function "setrlimit" to set limits on system resources such as memory
and cpu usage.
Any "RLIMIT" operation available to limit on your system can be set by
defining that operation as an environment variable with a "PERL_"
prefix. See your system "setrlimit" manpage for available resources
which can be limited.
The following limit values are in megabytes: "DATA", "RSS", "STACK",
"FSIZE", "CORE", "MEMLOCK"; all others are treated as their natural
unit.
If the value of the variable is of the form "S:H", "S" is treated as
the soft limit, and "H" is the hard limit. If it is just a single
number, it is used for both soft and hard limits.
Defaults
- To set reasonable defaults for all RLIMITs, add this to your
httpd.conf: - PerlSetEnv PERL_RLIMIT_DEFAULTS On
PerlModule Apache2::Resource
See Also
BSD::Resource(3), setrlimit(2)
Copyright
mod_perl 2.0 and its core modules are copyrighted under The Apache
Software License, Version 2.0.
Author
- Doug MacEachern