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Add 'set tunables' help, list the kernel tunable values that can currently

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be overridden.
This commit is contained in:
Mike Smith 1999-01-21 22:03:16 +00:00
parent a397d09e64
commit 4291c3b7ad
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=43016
1 changed files with 18 additions and 0 deletions
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18
sys/boot/common/help.common
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@ -202,6 +202,24 @@
when the kernel is booted. This can be overridden by setting
$rootdev explicitly.
################################################################################
# Tset Stunables DSet kernel tunable values
Various kernel tunable parameters can be overriden by specifying new
values in the environment.
set kern.ipc.nmbclusters=<value> NMBCLUSTERS
Set the number of mbuf clusters to be allocated. The value
cannot be set below the default determined when the kernel
was compiled.
set kern.vm.kmem.size=<value> VM_KMEM_SIZE
Sets the size of kernel memory (bytes). This overrides
completely the value determined when the kernel was
compiled.
################################################################################
# Tshow DShow the values of variables