blob: 47878b47024a6a8bd1c9ea79d560e0a7c1a17254 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
#pmieconf-rules 1
# --- DO NOT MODIFY THIS FILE --- see pmieconf(4)
#
rule filesys.buffer_cache
summary = "$rule$"
predicate =
"some_host (
100 * ( kernel.all.io.lread $hosts$ -
kernel.all.io.bread $hosts$
/ kernel.all.io.lread $hosts$ ) < $threshold$
&& kernel.all.io.lread $hosts$ > $min_lread$ Kbytes/sec
)"
enabled = yes
version = 1
help =
"Some filesystem read activity (at least min_lread Kbytes per
second of logical reads), and the read hit ratio in the buffer
cache is below threshold percent.
Note: It is possible for the read hit ratio to be negative
(more phsical reads than logical reads) - this can be as a
result of:
o XLV striped volumes, where blocks span stripe boundaries;
o very large files, where the disk controller has to read
blocks indirectly (multiple block reads to find a single
data block result);
o file system read-ahead pre-fetching blocks which are not
subsequently read.";
string rule
default = "Low buffer cache read hit ratio"
modify = no
display = no;
percent threshold
default = 50
help =
"The minimum acceptable buffer cache read hit ratio, expressed as a
percentage. Values may be in the range 0 (nothing is read from the
cache and poor performance is expected) to 100 (all reads come from
the cache, no disk I/O required and good performance expected).";
double min_lread
default = 512
help =
"Unless at least min_lread Kbytes per second are passing across the
logical filesystem read interface the rule will not be true.";
string action_expand
default = %v%rcach@%h
display = no
modify = no;
string email_expand
default = "host: %h buffer cache read hit ratio: %v%"
display = no
modify = no;
# Configuration info specific to non-PCP tools follows...
#
# for SGI Embedded Support Partner integration:
string esp_type
default = "0x200049"
display = no
modify = no;
# for EnlightenDSM integration:
string enln_test
default = filesys.buffer_cache
display = no
modify = no;
string enln_units
default = %rcach
display = no
modify = no;
#
# --- DO NOT MODIFY THIS FILE --- see pmieconf(4)
|
