1PMNSMERGE(1) General Commands Manual PMNSMERGE(1)
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6 pmnsmerge - merge multiple versions of a Performance Co-Pilot PMNS
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9 $PCP_BINADM_DIR/pmnsmerge [-adfxv] infile [...] outfile
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12 pmnsmerge merges multiple instances of a Performance Metrics Name Space
13 (PMNS), as used by the components of the Performance Co-Pilot (PCP).
14 Each infile argument names a file that includes the root of a PMNS, of
16 the form
17 root {
19 /* arbitrary stuff */
20 }
21 The order in which the infile files are processed is determined by the
23 presence or absence of embedded control lines of the form
24 #define _DATESTAMP YYYYMMDD
26 Files without a control line are processed first and in the order they
28 appear on the command line. The other files are then processed in
29 order of ascending _DATESTAMP.
30 The -a option suppresses the argument re-ordering and processes all
32 files in the order they appear on the command line.
33 The merging proceeds by matching names in PMNS, only those new names in
35 each PMNS are considered, and these are added after any existing met‐
36 rics with the longest possible matching prefix in their names. For
37 example, merging these two input PMNS
38 root { root {
40 surprise 1:1:3
41 mine 1:1:1 mine 1:1:1
42 foo foo
43 yawn
44 yours 1:1:2
45 } }
46 foo { foo {
47 fumble 1:2:1
48 mumble 1:2:3
49 stumble 1:2:2 stumble 1:2:2
50 } }
51 yawn {
52 sleepy 1:3:1
53 }
54 Produces the resulting PMNS in out.
56 root {
58 mine 1:1:1
59 foo
60 yours 1:1:2
61 surprise 1:1:3
62 yawn
63 }
64 foo {
65 fumble 1:2:1
66 stumble 1:2:2
67 mumble 1:2:3
68 }
69 yawn {
70 sleepy 1:3:1
71 }
72 To avoid accidental over-writing of PMNS files, outfile is expected to
74 not exist when pmnsmerge starts. The -f option allows an existing out‐
75 file to be unlinked (if possible) and truncated before writing starts.
76 Normally duplicate names for the same Performance Metric Identifier
78 (PMID) in a PMNS are allowed. The -d option is the default option and
79 is included for backwards compatibility. The -x option reverses the
80 default and pmnsmerge will report an error and exit with a non-zero
81 status if a duplicate name is found for a PMID in any of the input PMNS
82 files or in the merged output PMNS.
83 The -v option produces one line of diagnostic output as each infile is
85 processed.
86 Once all of the merging has been completed, pmnsmerge will attempt to
88 load the resultant namespace using pmLoadASCIINameSpace(3) - if this
89 fails for any reason, outfile will still be created, but pmnsmerge will
90 report the problem and exit with non-zero status.
91 Using pmnsmerge with a single input argument allows that PMNS file to
93 be checked. In addition to syntactic checking, specifying -x will also
94 enable a check for duplicate names for all PMIDs.
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97 The available command line options are:
98 -a Process files in command line order.
100 -d, --dupok
102 Allow duplicate metric names per PMID. This is the default.
103 -f, --force
105 Overwrite output file if it already exists.
106 -v, --verbose
108 Verbose input processing.
109 -x, --nodups
111 Do not allow duplicate metric names per PMID.
112 -?, --help
114 Display usage message and exit.
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117 Once the writing of the new outfile file has begun, the signals SIGINT,
118 SIGHUP and SIGTERM will be ignored to protect the integrity of the new
119 file.
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122 Environment variables with the prefix PCP_ are used to parameterize the
123 file and directory names used by PCP. On each installation, the file
124 /etc/pcp.conf contains the local values for these variables. The
125 $PCP_CONF variable may be used to specify an alternative configuration
126 file, as described in pcp.conf(5).
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129 pmnsadd(1), pmnsdel(1), pmLoadASCIINameSpace(3), pcp.conf(5),
130 pcp.env(5) and PMNS(5).
131Performance Co-Pilot PCP PMNSMERGE(1)