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# Certain applications can grow to be larger than the 512M limit
# that FreeBSD initially imposes.  Below are some options to
# allow that limit to grow to 1GB, and can be increased further
# with changing the parameters.  MAXDSIZ is the maximum that the
# limit can be set to, and the DFLDSIZ is the default value for
# the limit.  MAXSSIZ is the maximum that the stack limit can be
# set to.  You might want to set the default lower than the max,
# and explicitly set the maximum with a shell command for processes
# that regularly exceed the limit like INND.

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# FreeBSD processes are subject to certain limits to their consumption
# of system resources.  See getrlimit(2) for more details.  Each
# resource limit has two values, a "soft" limit and a "hard" limit.
# The soft limits can be modified during normal system operation, but
# the hard limits are set at boot time.  Their default values are
# in sys//include/vmparam.h.  There are two ways to change them:

# 1.  Set the values at kernel build time.  The options below are one
#     way to allow that limit to grow to 1GB.  They can be increased
#     further by changing the parameters:

# 2.  In /boot/loader.conf, set the tunables kern.maxswzone,
#     kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
#     kern.dflssiz, kern.maxssiz and kern.sgrowsiz.

# The options in /boot/loader.conf override anything in the kernel
# configuration file.  See the function init_param1 in
# sys/kern/subr_param.c for more details.

• options MAXDSIZ=(1024UL*1024*1024)
• options MAXSSIZ=(128UL*1024*1024)
• options DFLDSIZ=(1024UL*1024*1024)

commit log

Add comments on setting resource limits.
$FreeBSD: src/sys/conf/NOTES,v 1.1302 2005/03/05 01:04:18 grog Exp $
$FreeBSD: src/sys/conf/NOTES,v 1.1303 2005/03/07 02:20:14 grog Exp $