SLABTOP(1) Linux User's Manual SLABTOP(1)
NAME
slabtop - display kernel slab cache information in(1,8) real time(1,2,n)
SYNOPSIS
slabtop [ options ]
DESCRIPTION
slabtop(1) displays detailed kernel slab cache information in(1,8) real
time. It displays a listing of the top caches sorted by one of the
listed sort(1,3) criterias. It also displays a statistics header filled
with slab layer information.
OPTIONS
Normal invocation of slabtop(1) does not require any options. The
behavior, however, can be fine-tuned by specifying one or more of the
following flags:
--delay=n, -d n
Refresh the display every n seconds. By default, slabtop(1)
refreshes the display every three seconds. To exit(3,n,1 builtins) the program,
hit q.
--sort=S, -s S
Sort by S, where S is one of the sort(1,3) criteria.
--once, -o
Display the output once and then exit.
--version, -V
Display version(1,3,5) information and exit.
--help Display usage information and exit.
SORT CRITERIA
The following are valid sort(1,3) criteria used to sort(1,3) the individual slab
caches and thereby determine what are the "top" slab caches to display.
The default sort(1,3) criteria is to sort(1,3) by the number of objects ("o").
The sort(1,3) criteria can also be changed while slabtop is running by
pressing the associated character.
a: sort(1,3) by number of active objects
b: sort(1,3) by objects per slab
c: sort(1,3) by cache size
l: sort(1,3) by number of slabs
v sort(1,3) by number of active slabs
n: sort(1,3) by name
o: sort(1,3) by number of objects
p: sort(1,3) by pages per slab
s: sort(1,3) by object size
u: sort(1,3) by cache utilization
COMMANDS
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(1,3) characters are also accepted, to change the sort(1,3)
routine. See the section SORT CRITERIA.
<SPACEBAR>
Refresh the screen.
Q Quit the program.
FILES
/proc(5,n)/slabinfo -- slab information
SEE ALSO
free(1), ps(1), top(1), vmstat(8)
NOTES
Currently, slabtop(1) requires a 2.4 or later kernel (specifically, a
version(1,3,5) 1.1 or later /proc(5,n)/slabinfo). Kernel 2.2 should be supported
in(1,8) the future.
AUTHORS
Written by Chris Rivera and Robert Love.
slabtop(1) was inspired by Martin Bligh's perl script, vmtop.
The procps package is maintained by Robert Love and was created by
Michael Johnson.
Send bug reports to <procps-list@redhat.com>.
Linux 13 Sep 2003 SLABTOP(1)