Document the following sysctls:
kern.geom.eli.version kern.geom.eli.key_cache_limit kern.geom.eli.key_cache_hits kern.geom.eli.key_cache_misses MFC after: 1 week
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=221633
@ -1,4 +1,4 @@
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.\" Copyright (c) 2005-2010 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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.\" Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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@ -627,9 +627,13 @@ variables can be used to control the behavior of the
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.Nm ELI
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GEOM class.
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The default value is shown next to each variable.
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All variables can also be set in
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Some variables can also be set in
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.Pa /boot/loader.conf .
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.Bl -tag -width indent
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.It Va kern.geom.eli.version
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Version number of the
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.Nm ELI
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GEOM class.
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.It Va kern.geom.eli.debug : No 0
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Debug level of the
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.Nm ELI
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@ -668,6 +672,22 @@ When set to 1, can speed-up crypto operations by using batching.
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Batching allows to reduce number of interrupts by responding on a group of
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crypto requests with one interrupt.
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The crypto card and the driver has to support this feature.
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.It Va kern.geom.eli.key_cache_limit : No 8192
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Specifies how many encryption keys to cache.
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The default limit
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.No ( 8192
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keys) will allow to cache all keys for 4TB provider with 512 bytes sectors and
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will take around 1MB of memory.
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.It Va kern.geom.eli.key_cache_hits
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Reports how many times we were looking up a key and it was already in cache.
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This sysctl is not updated for providers that need less keys than the limit
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specified in
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.Va kern.geom.eli.key_cache_limit .
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.It Va kern.geom.eli.key_cache_misses
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Reports how many times we were looking up a key and it was not in cache.
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This sysctl is not updated for providers that need less keys than the limit
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specified in
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.Va kern.geom.eli.key_cache_limit .
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.El
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.Sh EXIT STATUS
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Exit status is 0 on success, and 1 if the command fails.
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