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Monitoring the buffer caches
Finds Creats Dests Dirty
GDirty Pin% Dirty%
Tm:
640
82
0
0.0
2.8
Tm: 1139
109
0
0.0
5.5
Tm: 6794
754
0
0.0
6.1
Tm: 10759
1646 1646 1646 100.0
0
0.0
6.1
Example of -io option
Options string for main cache: "-IO -interval 5"
Reads Lrd(KB) Prd(KB)
Mn:
10
Mn:
0
Mn:
0
Mn:
0
Mn:
0
Mn:
0
Mn:
0
Mn:
0
Mn:
0
Mn:
0
Example of -bufalloc
option
Options string for Main cache: "-bufalloc -file_suffix bufalloc-iqmon -
append -interval 10"
2000-01-24 10:58:39
OU/AU MaxBuf Avail
Waits
1/0
1592
1592
1/1
1592
1592
1/1
1592
1592
474
HR% BWaits ReReads FMiss Cloned Reads/
57
84 99.4
83
109 100.0
749
754 100.0
The
option produces results like the following, which are for the main buffer
-io
cache:
Main Buffer Cache
1998-08-18 13:58:48
Input
Rratio
40
34
1.18
0
0
0.00
0
0
0.00
0
0
0.00
0
0
0.00
0
0
0.00
0
0
0.00
0
0
0.00
0
0
0.00
0
0
0.00
The -
option produces results like the following.
buffalloc
Buffer Allocation
AvPF Slots PinUsr PFUsr Posted UnPost Quota Locks
20
0
20
0
20
0
0
4
0
0
0
0
0
0
0
0
0
0
Output
Writes
Lwrt(KB)
14
56
21
84
7
28
22
88
63
252
54
216
64
256
62
248
73
292
105
420
0
0
0
0
0
0
0
0
0
PF/
Writes PFRead
0
4/0
0/0
0
0/0
0/0
0
0/0
0/0
0
0/0
0/0
Pwrt(KB)
Wratio
23
2.43
34
2.43
11
2.43
35
2.48
100
2.51
93
2.32
101
2.52
94
2.62
110
2.65
121
3.47
0
0
1
0
0
1
0
0
1
0
0
0
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