Section: Linux User's Manual (1)
Updated: 13 Sep 2003
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slabtop - display kernel slab cache information in real time
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.
Normal invocation of
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
in seconds. By default,
refreshes the display every three seconds. To exit the program, hit
- --sort=S, -s S
Sort by S, where S is one of the sort criteria.
- --once, -o
Display the output once and then exit.
- --version, -V
Display version information and exit.
Display usage information and exit.
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.
sort by number of active objects
sort by objects per slab
sort by cache size
sort by number of slabs
sort by number of active slabs
sort by name
sort by number of objects
sort by pages per slab
sort by object size
sort by cache utilization
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
Refresh the screen.
Quit the program.
requires a 2.4 or later kernel (specifically, a version 1.1 or later
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.
Written by Chris Rivera and Robert Love.
was inspired by Martin Bligh's perl script,
The procps package is maintained by Albert Cahalan <firstname.lastname@example.org>.
Please send bug reports to <email@example.com>.
- SORT CRITERIA
- SEE ALSO
This document was created by
using the manual pages.