Document the hw.physmem kernel environment variable.
Reviewed by: alfred
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2020-12-20 02:59:44 +00:00
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@ -404,6 +404,13 @@ MIB variable.
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Other variables are used to override kernel tunable parameters.
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The following tunables are available:
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.Bl -tag -width Va
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.It Va hw.physmem
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Limit the amount of phyiscal memory the system will use.
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By default the size is in bytes, but the k, K, m, M, g and G suffixes
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are also accepted and indicate kilobytes, megabytes and gigabytes
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respectively.
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An invalid suffix will result in the variable being ignored by the
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kernel.
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.It Va kern.maxusers
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Set the size of a number of statically allocated system tables; see
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.Xr tuning 7
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@ -71,6 +71,7 @@ module_path="/boot/kernel;/boot/modules;/modules" # Set the module search path
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### Kernel tunables ########################################
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##############################################################
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#hw.physmem="1G" # Limit phyiscal memory. See loader(8)
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#kern.maxusers="32" # Set size of various static tables
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#kern.ipc.nmbclusters="" # Set the number of mbuf clusters
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#kern.vm.kmem.size="" # Sets the size of kernel memory (bytes)
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