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Add comments on setting resource limits.

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This commit is contained in:
Greg Lehey 2005-03-05 01:04:18 +00:00
parent ff2ad7d6df
commit 480c6b8a00
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=143146
1 changed files with 21 additions and 12 deletions
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31
sys/conf/NOTES
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@ -77,23 +77,32 @@ makeoptions CONF_CFLAGS=-fno-builtin #Don't allow use of memcmp, etc.
#makeoptions MODULES_OVERRIDE="linux sound/sound sound/driver/maestro3"
makeoptions DESTDIR=/tmp
# 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/<arch>/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:
#
# 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.
#
# Hard limit for data segment size (default currently 512 MB).
options MAXDSIZ=(1024UL*1024*1024)
# Hard limit for stack size (default currently 64 MB)
options MAXSSIZ=(128UL*1024*1024)
# Soft limit for data segment size (default currently 128 MB)
options DFLDSIZ=(1024UL*1024*1024)
# 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.
# BLKDEV_IOSIZE sets the default block size used in user block
# device I/O. Note that this value will be overridden by the label
# when specifying a block device from a label with a non-0