pmunloadnamespace(3) [centos man page]

PMUNLOADNAMESPACE(3)					     Library Functions Manual					      PMUNLOADNAMESPACE(3)

NAME

       pmUnloadNameSpace - unload a local performance metrics name space for an application

C SYNOPSIS

       #include <pcp/pmapi.h>

       void pmUnloadNameSpace(void);

       cc ... -lpcp

DESCRIPTION

       If one has previously loaded a local Name Space using pmLoadNameSpace(3) or pmLoadASCIINameSpace(3), then calling pmUnloadNameSpace(3) will
       free up the memory associated with the Name Space and force all subsequent PMNS routine calls to use the distributed  PMNS.   If  pmUnload-
       NameSpace(3) is called before calling pmLoadNameSpace(3) or pmLoadASCIINameSpace(3), then it will effectively do nothing.

SEE ALSO

       PMAPI(3), pmLoadASCIINameSpace(3), pmLoadNameSpace(3) and pmns(5).

Performance Co-Pilot							PCP						      PMUNLOADNAMESPACE(3)

PMLOADNAMESPACE(3)					     Library Functions Manual						PMLOADNAMESPACE(3)

NAME

       pmLoadNameSpace - load a local PMNS for an application

C SYNOPSIS

       #include <pcp/pmapi.h>

       int pmLoadNameSpace(const char *filename);

       cc ... -lpcp

DESCRIPTION

       If  the	application wants to force using a local Performance Metrics Name Space (PMNS) instead of a distributed PMNS then it must load the
       PMNS using pmLoadNameSpace or pmLoadASCIINameSpace(3).  If the application is to use a distributed PMNS, then it should NOT make a call	to
       load the PMNS explicitly.

       The filename argument designates the PMNS of interest.  For applications not requiring a tailored PMNS, the special value PM_NS_DEFAULT may
       be used for filename, to force the default local PMNS to be loaded.

       The default local PMNS is found in the file $PCP_VAR_DIR/pmns/root unless the environment variable PMNS_DEFAULT is set, in which  case  the
       value is assumed to be the pathname to the file containing the default local PMNS.

       Externally a PMNS is stored in an ASCII format as described in pmns(5).

       By  default,  multiple names in the PMNS are not allowed to be associated with a single Performance Metrics Identifier (PMID).  pmLoadASCI-
       INameSpace(3) provides an alternative interface with user-defined control over the processing of duplicate PMIDs in the PMNS.

       pmLoadNameSpace returns zero on success.

FILES

       $PCP_VAR_DIR/pmns/root	the default local PMNS, when the environment variable PMNS_DEFAULT is unset

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 configura-
       tion file, as described in pcp.conf(5).	Values for these variables may be obtained programmatically using the pmGetConfig(3) function.

SEE ALSO

       PMAPI(3), pmGetConfig(3), pmLoadASCIINameSpace(3), pmTrimNameSpace(3), pcp.conf(5), pcp.env(5) and pmns(5).

DIAGNOSTICS

       Syntax and other errors in the parsing of the PMNS are reported on stderr with a message of the form ``Error Parsing ASCII PMNS: ...''.

       PM_ERR_DUPPMNS

	      It is an error to try and load more than one PMNS, or to call either pmLoadNameSpace and/or pmLoadASCIINameSpace(3) more than once.

       PM_ERR_PMNS

	      Syntax error in the PMNS file.

Performance Co-Pilot							PCP							PMLOADNAMESPACE(3)