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o Sync LOCK_PROFILING manpage with the current code: remove

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unexistent sysctls, add new ones.

Reviewed by:	gjb
Sponsored by:	Nginx, Inc.
This commit is contained in:
Maxim Konovalov 2012-03-07 14:50:14 +00:00
parent 3f978c3537
commit 92bf2c1bc3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=232658
1 changed files with 9 additions and 27 deletions
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36
share/man/man9/LOCK_PROFILING.9
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@ -29,7 +29,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd November 11, 2006
.Dd March 7, 2012
.Dt LOCK_PROFILING 9
.Os
.Sh NAME
@ -82,32 +82,6 @@ Enable or disable the lock profiling code.
This defaults to 0 (off).
.It Va debug.lock.prof.reset
Reset the current lock profiling buffers.
.It Va debug.lock.prof.acquisitions
The total number of lock acquisitions recorded.
.It Va debug.lock.prof.records
The total number of acquisition points recorded.
Note that only active acquisition points (i.e., points that have been
reached at least once) are counted.
.It Va debug.lock.prof.maxrecords
The maximum number of acquisition points the profiling code is capable
of monitoring.
Since it would not be possible to call
.Xr malloc 9
from within the lock profiling code, this is a static limit.
The number of records can be changed with the
.Dv LPROF_BUFFERS
kernel option.
.It Va debug.lock.prof.rejected
The number of acquisition points that were ignored after the table
filled up.
.It Va debug.lock.prof.hashsize
The size of the hash table used to map acquisition points to
statistics records.
The hash size can be changed with the
.Dv LPROF_HASH_SIZE
kernel option.
.It Va debug.lock.prof.collisions
The number of hash collisions in the acquisition point hash table.
.It Va debug.lock.prof.stats
The actual profiling statistics in plain text.
The columns are as follows, from left to right:
@ -138,6 +112,14 @@ reached.
The name of the acquisition point, derived from the source file name
and line number, followed by the name of the lock in parentheses.
.El
.It Va debug.lock.prof.rejected
The number of acquisition points that were ignored after the table
filled up.
.It Va debug.lock.prof.skipspin
Disable or enable the lock profiling code for the spin locks.
This defaults to 0 (do profiling for the spin locks).
.It Va debug.lock.prof.skipcount
Do sampling approximately every N lock acquisitions.
.El
.Sh SEE ALSO
.Xr sysctl 8 ,