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CentOS 7.0 - man page for pmnsmerge (centos section 1)

PMNSMERGE(1)									     PMNSMERGE(1)

NAME
       pmnsmerge - merge multiple versions of a Performance Co-Pilot PMNS

SYNOPSIS
       $PCP_BINADM_DIR/pmnsmerge [-adfv] infile [...]  outfile

DESCRIPTION
       pmnsmerge merges multiple instances of a Performance Metrics Name Space (PMNS), as used by
       the components of the Performance Co-Pilot (PCP).

       Each infile argument names a file that includes the root of a PMNS, of the form

		 root {
		     /* arbitrary stuff */
		 }

       The order in which the infile files are processed is determined by the presence or absence
       of embedded control lines of the form #define _DATESTAMP YYYYMMDD

       Files  without a control line are processed first and in the order they appear on the com-
       mand line.  The other files are then processed in order of ascending _DATESTAMP.

       The -a option suppresses the argument re-ordering and processes all  files  in  the  order
       they appear on the command line.

       The merging proceeds by matching names in PMNS, only those new names in each PMNS are con-
       sidered, and these are added after any existing metrics with the longest possible matching
       prefix in their names.  For example, merging these two input PMNS

		 root { 		   root {
					       surprise  1:1:3
		     mine	1:1:1	       mine	 1:1:1
		     foo		       foo
					       yawn
		     yours	1:1:2
		 }			   }
		 foo {			   foo {
		     fumble	1:2:1
					       mumble	 1:2:3
		     stumble	1:2:2	       stumble	 1:2:2
		 }			   }
					   yawn {
					       sleepy	 1:3:1
					   }

       Produces the resulting PMNS in out.

		 root {
		     mine      1:1:1
		     foo
		     yours     1:1:2
		     surprise  1:1:3
		     yawn
		 }
		 foo {
		     fumble    1:2:1
		     stumble   1:2:2
		     mumble    1:2:3
		 }
		 yawn {
		     sleepy    1:3:1
		 }

       To  avoid  accidental  over-writing  of	PMNS files, outfile is expected to not exist when
       pmnsmerge starts.  The -f option forces the removal of outfile (if it exists), before  the
       check is made.

       The -d option allows the resultant PMNS to optionally contain duplicate PMIDs with differ-
       ent names in the PMNS.  By default this condition is considered an error.

       The -v option produces one line of diagnostic output as each infile is processed.

       Once all of the merging has been completed, pmnsmerge will attempt to load  the	resultant
       namespace using pmLoadASCIINameSpace(3) - if this fails for any reason, outfile will still
       be created, but pmnsmerge will report the problem and exit with non-zero status.

CAVEAT
       Once the writing of the new outfile file has begun, the signals SIGINT, SIGHUP and SIGTERM
       will be ignored to protect the integrity of the new file.

PCP ENVIRONMENT
       Environment variables with the prefix PCP_ are used to parameterize the file and directory
       names used by PCP.  On each installation, the file /etc/pcp.conf contains the local values
       for these variables.  The $PCP_CONF variable may be used to specify an alternative config-
       uration file, as described in pcp.conf(5).

SEE ALSO
       pmnsadd(1), pmnsdel(1), pmLoadASCIINameSpace(3), pcp.conf(5), pcp.env(5) and pmns(5).

Performance Co-Pilot			       PCP				     PMNSMERGE(1)


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