+++ /dev/null
-.\" Copyright (c) 2001 Andreas Dilger (adilger@turbolinux.com)
-.\"
-.\" %%%LICENSE_START(VERBATIM)
-.\" Permission is granted to make and distribute verbatim copies of this
-.\" manual provided the copyright notice and this permission notice are
-.\" preserved on all copies.
-.\"
-.\" Permission is granted to copy and distribute modified versions of this
-.\" manual under the conditions for verbatim copying, provided that the
-.\" entire resulting derived work is distributed under the terms of a
-.\" permission notice identical to this one.
-.\"
-.\" Since the Linux kernel and libraries are constantly changing, this
-.\" manual page may be incorrect or out-of-date. The author(s) assume no
-.\" responsibility for errors or omissions, or for damages resulting from
-.\" the use of the information contained herein. The author(s) may not
-.\" have taken the same level of care in the production of this manual,
-.\" which is licensed free of charge, as they might when working
-.\" professionally.
-.\"
-.\" Formatted or processed versions of this manual, if unaccompanied by
-.\" the source, must acknowledge the copyright and authors of this work.
-.\" %%%LICENSE_END
-.\"
-.\" FIXME Over time, the slabinfo format has gone through
-.\" version changes. These should be documented:
-.\"
-.\" slabinfo 1.0 - Linux 2.2 (precisely: 2.1.23)
-.\" slabinfo 1.1 - Linux 2.4 (precisely: 2.4.0-test3)
-.\" slabinfo 1.2 - Linux 2.5.45
-.\" slabinfo 2.0 - Linux 2.6 (precisely: 2.5.71)
-.\" slabinfo 2.1 - Linux 2.6.10
-.\"
-.TH SLABINFO 5 2007-09-30 "" "Linux Programmer's Manual"
-.SH NAME
-/proc/slabinfo \- kernel slab allocator statistics
-.SH SYNOPSIS
-.B cat /proc/slabinfo
-.SH DESCRIPTION
-Frequently used objects in the Linux kernel
-(buffer heads, inodes, dentries, etc.)
-have their own cache.
-The file
-.I /proc/slabinfo
-gives statistics.
-For example:
-.LP
-.in +4n
-.nf
-% cat /proc/slabinfo
-slabinfo \- version: 1.1
-kmem_cache 60 78 100 2 2 1
-blkdev_requests 5120 5120 96 128 128 1
-mnt_cache 20 40 96 1 1 1
-inode_cache 7005 14792 480 1598 1849 1
-dentry_cache 5469 5880 128 183 196 1
-filp 726 760 96 19 19 1
-buffer_head 67131 71240 96 1776 1781 1
-vm_area_struct 1204 1652 64 23 28 1
-\&...
-size-8192 1 17 8192 1 17 2
-size-4096 41 73 4096 41 73 1
-\&...
-.fi
-.in
-.LP
-For each slab cache, the cache name, the number of currently
-active objects, the total number of available objects, the
-size of each object in bytes, the number of pages with at
-least one active object, the total number of allocated pages,
-and the number of pages per slab are given.
-
-Note that because of object alignment and slab cache overhead,
-objects are not normally packed tightly into pages.
-Pages with even one in-use object are considered in-use and cannot be
-freed.
-
-Kernels compiled with slab cache statistics will also have
-"(statistics)" in the first line of output, and will have 5
-additional columns, namely: the high water mark of active
-objects; the number of times objects have been allocated;
-the number of times the cache has grown (new pages added
-to this cache); the number of times the cache has been
-reaped (unused pages removed from this cache); and the
-number of times there was an error allocating new pages
-to this cache.
-If slab cache statistics are not enabled
-for this kernel, these columns will not be shown.
-
-SMP systems will also have "(SMP)" in the first line of
-output, and will have two additional columns for each slab,
-reporting the slab allocation policy for the CPU-local
-cache (to reduce the need for inter-CPU synchronization
-when allocating objects from the cache).
-The first column is the per-CPU limit: the maximum number of objects that
-will be cached for each CPU.
-The second column is the
-batchcount: the maximum number of free objects in the
-global cache that will be transferred to the per-CPU cache
-if it is empty, or the number of objects to be returned
-to the global cache if the per-CPU cache is full.
-
-If both slab cache statistics and SMP are defined, there
-will be four additional columns, reporting the per-CPU
-cache statistics.
-The first two are the per-CPU cache
-allocation hit and miss counts: the number of times an
-object was or was not available in the per-CPU cache
-for allocation.
-The next two are the per-CPU cache free
-hit and miss counts: the number of times a freed object
-could or could not fit within the per-CPU cache limit,
-before flushing objects to the global cache.
-
-It is possible to tune the SMP per-CPU slab cache limit
-and batchcount via:
-
-.in +4n
-.nf
-echo "\fIcache_name limit batchcount\fP" > /proc/slabinfo
-.fi
-.in
-.SH FILES
-.I <linux/slab.h>
-.SH VERSIONS
-.I /proc/slabinfo
-exists since Linux 2.1.23.
-SMP per-CPU caches exist since Linux 2.4.0-test3.
-.SH NOTES
-Since Linux 2.6.16 the file
-.I /proc/slabinfo
-is present only if the
-.B CONFIG_SLAB
-kernel configuration option is enabled.
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.
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