SLABTOP(1) Linux User’s Manual SLABTOP(1)
slabtop - display kernel slab cache information in real time
slabtop [ options ]
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 criterias. It also displays a statistics header filled
with slab layer information.
Normal invocation of slabtop(1) does not require any options. The
behavior, however, can be fine-tuned by specifying one or more of the
--delay=n, -d n
Refresh the display every n seconds. By default, slabtop(1)
refreshes the display every three seconds. To exit the program,
--sort=S, -s S
Sort by S, where S is one of the sort criteria.
Display the output once and then exit.
Display version information and exit.
--help 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.
a: sort by number of active objects
b: sort by objects per slab
c: sort by cache size
l: sort by number of slabs
v sort by number of active slabs
n: sort by name
o: sort by number of objects
p: sort by pages per slab
s: sort by object size
u: sort by cache utilization
slabtop(1) accepts keyboard commands from the user during use. The
following are supported. In the case of letters, both cases are
Each of the valid sort characters are also accepted, to change the sort
routine. See the section SORT CRITERIA.
Refresh the screen.
Q Quit the program.
/proc/slabinfo -- slab information
free(1), ps(1), top(1), vmstat(8)
Currently, slabtop(1) 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.
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
Send bug reports to <email@example.com>.
Linux 13 Sep 2003 SLABTOP(1)
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