Proc/Stat - Red Hat ENTERPRISE LINUX 5 - DEPLOYMENT Deployment Manual

Chapter 3. The proc File System
Active / Total Objects (% used)
Active / Total Slabs (% used)
Active / Total Caches (% used)
Active / Total Size (% used)
Minimum / Average / Maximum Object : 0.01K / 0.30K / 128.00K
OBJS ACTIVE USE
44814 43159 96%
36900 34614 93%
35213 33124 94%
7364 6463 87% 0.27K
2585 1781 68% 0.08K
2263 2116 93% 0.12K
1904 1125 59% 0.03K
1666 768 46% 0.03K
1512 1482 98% 0.44K
1464 1040 71% 0.06K
1320 820 62% 0.19K
678 587 86% 0.02K
678 587 86% 0.02K
576 574 99% 0.47K
528 514 97% 0.50K
492 372 75% 0.09K
465 314 67% 0.25K
452 331 73% 0.02K
420 420 100% 0.19K
305 256 83% 0.06K
290 4 1% 0.01K
264 264 100% 4.00K
260 256 98% 0.19K
260 256 98% 0.75K
Some of the more commonly used statistics in /proc/slabinfo that are included into /usr/bin/
slabtop include:
• OBJS — The total number of objects (memory blocks), including those in use (allocated), and some
spares not in use.
• ACTIVE — The number of objects (memory blocks) that are in use (allocated).
• USE — Percentage of total objects that are active. ((ACTIVE/OBJS)(100))
• OBJ SIZE — The size of the objects.
• SLABS — The total number of slabs.
• OBJ/SLAB — The number of objects that fit into a slab.
• CACHE SIZE — The cache size of the slab.
• NAME — The name of the slab.
For more information on the /usr/bin/slabtop program, refer to the slabtop man page.

3.2.27. /proc/stat

This file keeps track of a variety of different statistics about the system since it was last restarted. The
contents of /proc/stat, which can be quite long, usually begins like the following example:
cpu 259246 7001 60190 34250993 137517 772 0
30
: 133629 / 147300 (90.7%)
: 11492 / 11493 (100.0%)
: 77 / 121 (63.6%)
: 41739.83K / 44081.89K (94.7%)
OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME
0.62K 7469 6
0.05K 492 75
0.16K 1531 23
526 14
55 47
73 31
16 119
14 119
168 9
24 61
66 20
3 226
3 226
72 8
66 8
12 41
31 15
2 226
21 20
5 61
1 290
264 1
13 20
52 5
29876K ext3_inode_cache
1968K buffer_head
6124K dentry_cache
2104K radix_tree_node
220K vm_area_struct
292K size-128
64K size-32
56K anon_vma
672K inode_cache
96K size-64
264K filp
12K dm_io
12K dm_tio
288K proc_inode_cache
264K size-512
48K bio
124K size-256
8K biovec-1
84K skbuff_head_cache
20K biovec-4
4K revoke_table
1056K size-4096
52K biovec-16
208K biovec-64