NAME

       pmNameID - translate a PMID to a performance metric name

C SYNOPSIS

       #include <pcp/pmapi.h>

       int pmNameID(pmID pmid, char **name);

       cc ... -lpcp

DESCRIPTION

       Given  a  Performance Metric Identifier (PMID) via pmid, pmNameID will determine the corresponding metric
       name, if any, in the Performance Metrics Name Space (PMNS), and return this via name.

       If the PMNS contains multiple names associated with the requested PMID, one of these will be returned via
       name, but there is no way to determine which of the duplicate names this will be.   See  pmNameAll(3)  if
       all of the corresponding names are required.

       As  of  Version  3.10.3  of  PCP, duplicate names for the same PMID are allowed in the PMNS, so using pm‐
       NameAll(3) is recommended over pmNameID.

       name is a null-byte terminated string, allocated by pmNameID using malloc(3) and it is the  caller's  re‐
       sponsibility to call free(3) to release the storage when the value is no longer required.

       In the absence of errors, pmNameID returns zero.

DIAGNOSTICS

       PM_ERR_NOPMNS
              Failed  to  access  a PMNS for operation.  Note that if the application hasn't a priori called pm‐
              LoadNameSpace(3) and wants to use the distributed PMNS, then a call to pmNameID must be made after
              the creation of a context (see pmNewContext(3)).

       PM_ERR_PMID
              pmid does not correspond to a defined PMID in the PMNS.

       PM_ERR_*
              Other diagnostics are for protocol failures when accessing the distributed PMNS.

SEE ALSO

       PMAPI(3), pmGetChildren(3), pmGetChildrenStatus(3), pmGetConfig(3), pmLoadASCIINameSpace(3),  pmLoadName‐
       Space(3), pmLookupName(3), pmNameAll(3), pmNewContext(3), pcp.conf(5), pcp.env(5) and PMNS(5).

Performance Co-Pilot                                   PCP                                           PMNAMEID(3)