Apache2::Resource - Limit resources used by httpd children
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
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.
Apache2::Resource
BSD::Resource
setrlimit
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.
RLIMIT
PERL_
The following limit values are in megabytes: DATA, RSS, STACK, FSIZE, CORE, MEMLOCK; all others are treated as their natural unit.
DATA
RSS
STACK
FSIZE
CORE
MEMLOCK
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.
S:H
S
H
To set reasonable defaults for all RLIMITs, add this to your httpd.conf:
PerlSetEnv PERL_RLIMIT_DEFAULTS On PerlModule Apache2::Resource
BSD::Resource(3), setrlimit(2)
mod_perl 2.0 and its core modules are copyrighted under The Apache Software License, Version 2.0.
Doug MacEachern
To install mod_perl2, copy and paste the appropriate command in to your terminal.
cpanm
cpanm mod_perl2
CPAN shell
perl -MCPAN -e shell install mod_perl2
For more information on module installation, please visit the detailed CPAN module installation guide.