slabtop
display kernel slab cache information in real time
see also :
free - ps - top - vmstat
Synopsis
slabtop
[options]
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examples
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description
slabtop
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.
options
Normal
invocation of slabtop does not require any options.
The behavior, however, can be fine-tuned by specifying one
or more of the following flags:
-d, --delay=N
Refresh the display every
n in seconds. By default, slabtop refreshes
the display every three seconds. To exit the program, hit
q.
-s,
--sort=S
Sort by S, where
S is one of the sort criteria.
-o,
--once
Display the output once and
then exit.
-V,
--version
Display version information and
exit.
-h,
--help
Display usage information and
exit.
commands
slabtop 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 SORT CRITERIA.
<SPACEBAR>
Refresh the screen.
Q
Quit the program.
files
/proc/slabinfo
slab information
notes
Currently, slabtop requires a 2.4 or later kernel
(specifically, a version 1.1 or later /proc/slabinfo).
Kernel 2.2 should be supported in the future.
The slabtop statistic header is tracking how many bytes of slabs
are being used and it not a measure of physical memory. The
’Slab’ field in the /proc/meminfo file is tracking information
about used slab physical memory.
reporting bugs
Please send bug reports to procps[:at:]freelists[:dot:]org
(procps[:at:]freelists[:dot:]org)
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.
see also
free ,
ps , top , vmstat
authors
Written by
Chris Rivera and Robert Love.
slabtop
was inspired by Martin Bligh’s perl script,
vmtop.