123 lines
2.7 KiB
Groff
123 lines
2.7 KiB
Groff
.\" slabtop.1 - manpage for the slabtop(1) utility, part of procps
|
|
.\"
|
|
.\" Copyright (C) 2003 Chris Rivera
|
|
.\" Licensed under the terms of the GNU Library General Public License, v2
|
|
.TH SLABTOP 1 "13 Sep 2003" "Linux" "Linux User's Manual"
|
|
.SH NAME
|
|
slabtop \- display kernel slab cache information in real time
|
|
|
|
.SH SYNOPSIS
|
|
.BI "slabtop [ " options " ] "
|
|
|
|
.SH DESCRIPTION
|
|
.BR slabtop (1)
|
|
displays detailed kernel slab cache information in real time. It displays a
|
|
listing of the top caches sorted by one of the listed sort criteria. It also
|
|
displays a statistics header filled with slab layer information.
|
|
|
|
.SH OPTIONS
|
|
Normal invocation of
|
|
.BR slabtop (1)
|
|
does not require any options. The behavior, however, can be fine-tuned by
|
|
specifying one or more of the following flags:
|
|
.TP
|
|
.B \-\^\-delay=n, \-d n
|
|
Refresh the display every n seconds. By default,
|
|
.BR slabtop (1)
|
|
refreshes the display every three seconds. To exit the program, hit
|
|
.BR q.
|
|
.TP
|
|
.B \-\^\-sort=S, \-s S
|
|
Sort by S, where S is one of the sort criteria.
|
|
.TP
|
|
.B \-\^\-once, \-o
|
|
Display the output once and then exit.
|
|
.TP
|
|
.B \-\^\-version, \-V
|
|
Display version information and exit.
|
|
.TP
|
|
.B \-\^\-help
|
|
Display usage information and exit.
|
|
|
|
.SH SORT CRITERIA
|
|
The following are valid sort criteria used to sort the individual slab caches
|
|
and thereby determine what are the "top" slab caches to display. The default
|
|
sort criteria is to sort by the number of objects ("o").
|
|
|
|
The sort criteria can also be changed while slabtop is running by pressing
|
|
the associated character.
|
|
.TP
|
|
.BR a:
|
|
sort by number of active objects
|
|
.TP
|
|
.BR b:
|
|
sort by objects per slab
|
|
.TP
|
|
.BR c:
|
|
sort by cache size
|
|
.TP
|
|
.BR l:
|
|
sort by number of slabs
|
|
.TP
|
|
.BR v
|
|
sort by number of active slabs
|
|
.TP
|
|
.BR n:
|
|
sort by name
|
|
.TP
|
|
.BR o:
|
|
sort by number of objects
|
|
.TP
|
|
.BR p:
|
|
sort by pages per slab
|
|
.TP
|
|
.BR s:
|
|
sort by object size
|
|
.TP
|
|
.BR u:
|
|
sort by cache utilization
|
|
|
|
.SH COMMANDS
|
|
.BR slabtop (1)
|
|
accepts keyboard commands from the user during use. The following are
|
|
supported. In the case of letters, both cases are accepted.
|
|
|
|
Each of the valid sort characters are also accepted, to change the sort
|
|
routine. See the section
|
|
.IR "SORT CRITERIA" .
|
|
|
|
.TP
|
|
.BR <SPACEBAR>
|
|
Refresh the screen.
|
|
.TP
|
|
.BR Q
|
|
Quit the program.
|
|
|
|
.SH FILES
|
|
.IR /proc/slabinfo " \-\- slab information"
|
|
|
|
.SH "SEE ALSO"
|
|
.BR free (1),
|
|
.BR ps (1),
|
|
.BR top (1),
|
|
.BR vmstat (8)
|
|
|
|
.SH NOTES
|
|
Currently,
|
|
.BR slabtop (1)
|
|
requires a 2.4 or later kernel (specifically, a version 1.1 or later
|
|
.IR /proc/slabinfo ).
|
|
Kernel 2.2 should be supported in the future.
|
|
|
|
.SH AUTHORS
|
|
Written by Chris Rivera and Robert Love.
|
|
|
|
.BR slabtop (1)
|
|
was inspired by Martin Bligh's perl script,
|
|
.BR vmtop .
|
|
|
|
The procps package is maintained by Robert Love and was created by Michael
|
|
Johnson.
|
|
|
|
Send bug reports to <procps-list@redhat.com>.
|