Add 'set tunables' help, list the kernel tunable values that can currently
be overridden.
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=43016
@ -202,6 +202,24 @@
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when the kernel is booted. This can be overridden by setting
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$rootdev explicitly.
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################################################################################
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# Tset Stunables DSet kernel tunable values
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Various kernel tunable parameters can be overriden by specifying new
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values in the environment.
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set kern.ipc.nmbclusters=<value> NMBCLUSTERS
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Set the number of mbuf clusters to be allocated. The value
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cannot be set below the default determined when the kernel
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was compiled.
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set kern.vm.kmem.size=<value> VM_KMEM_SIZE
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Sets the size of kernel memory (bytes). This overrides
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completely the value determined when the kernel was
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compiled.
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################################################################################
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# Tshow DShow the values of variables
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