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Update for moving some fields to the new vnstat display.

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Don't say that `cache' is for the buffer cache.

Describe the uselessnes of `buf'.
This commit is contained in:
Bruce Evans 2006-04-30 22:05:02 +00:00
parent 76c3f9c995
commit 71ae810140
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=158193
1 changed files with 16 additions and 8 deletions
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usr.bin/systat/systat.1
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@ -333,6 +333,13 @@ handled by the system wide name translation cache, and
the number and percentage of the translations that were
handled by the per process name translation cache.
.Pp
To the right of the name translations display are lines showing
the number of dirty buffers in the buffer cache (`dtbuf'),
desired maximum size of vnode cache (`desvn'),
number of vnodes actually allocated (`numvn'),
and
number of allocated vnodes that are free (`frevn').
.Pp
At the bottom left is the disk usage display.
It reports the number of
kilobytes per transaction, transactions per second, megabytes
@ -372,7 +379,7 @@ total pages freed (`totfr'),
pages wired down (`wire'),
active pages (`act'),
inactive pages (`inact'),
pages on the buffer cache queue (`cache'),
pages on the cache queue (`cache'),
number of free pages (`free'),
pages freed by the page daemon (`daefr'),
pages freed by exiting processes (`prcfr'),
@ -383,13 +390,14 @@ and
intransit blocking page faults (`intrn')
per second over the refresh interval.
.Pp
At the bottom of this column are lines showing the
amount of memory, in kilobytes, used for the buffer cache (`buf'),
the number of dirty buffers in the buffer cache (`dtbuf'),
desired maximum size of vnode cache (`desvn'),
number of vnodes actually allocated (`numvn'),
and
number of allocated vnodes that are free (`frevn').
At the bottom of this column is a line showing the
amount of virtual memory, in kilobytes, mapped into the buffer cache (`buf').
This statistic is not useful.
It exists only as a placeholder for the corresponding useful statistic
(the amount of real memory used to cache disks).
The most important component of the latter (the amount of real memory
used by the vm system to cache disks) is not available,
but can be guessed from the `inact' amount under some system loads.
.Pp
Running down the right hand side of the display is a breakdown
of the interrupts being handled by the system.