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Apache::Resource - Limit resources used by httpd children
PerlModule Apache::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 Apache::Resource
Apache::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.
To set reasonable defaults for all RLIMITs, add this to your httpd.conf:
PerlSetEnv PERL_RLIMIT_DEFAULTS On PerlModule Apache::Resource
Doug MacEachern
BSD::Resource(3), setrlimit(2)