pmnameall(3) [centos man page]
PMNAMEALL(3) Library Functions Manual PMNAMEALL(3) NAME
pmNameAll - translate a PMID to a set of performance metric names C SYNOPSIS
#include <pcp/pmapi.h> int pmNameAll(pmID pmid, char ***nameset); cc ... -lpcp DESCRIPTION
Given a Performance Metric ID (PMID) via pmid, pmNameAll will determine all the corresponding metric names, if any, in the Performance Met- rics Name Space (PMNS), and return these via nameset. The resulting list of pointers nameset and the values (the relative names) that the pointers reference will have been allocated by pmNameAll with a single call to malloc(3C), and it is the responsibility of the pmNameAll caller to free(nameset) to release the space when it is no longer required. In the absence of errors, pmNameAll returns the number of names in nameset. For many examples of a PMNS, there will be a 1:1 mapping between a name and a PMID, and under these circumstances, pmNameID(3) provides a slightly simpler interface in the absence of duplicate names for a particular PMID. SEE ALSO
PMAPI(3), pmGetChildren(3), pmGetChildrenStatus(3), pmGetConfig(3), pmLoadASCIINameSpace(3), pmLoadNameSpace(3), pmLookupName(3), pmNameID(3), pmNewContext(3), pcp.conf(5), pcp.env(5) and pmns(5). DIAGNOSTICS
PM_ERR_NOPMNS Failed to access a PMNS for operation. Note that if the application hasn't a priori called pmLoadNameSpace(3) and wants to use the distributed PMNS, then a call to pmNameAll 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. Performance Co-Pilot PCP PMNAMEALL(3)
Check Out this Related Man Page
PMNSDEL(1) General Commands Manual PMNSDEL(1) NAME
pmnsdel - delete a subtree of names from the Performance Co-Pilot PMNS SYNOPSIS
$PCP_BINADM_DIR/pmnsdel [-d] [-n namespace] metricpath [ ... ] DESCRIPTION
pmnsdel removes subtrees of names from a Performance Metrics Name Space (PMNS), as used by the components of the Performance Co-Pilot (PCP). Normally pmnsdel operates on the default Performance Metrics Namespace (PMNS), however if the -n option is specified an alternative names- pace is used from the file namespace. The default 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 PMNS. The metric names to be deleted are all those for which one of the metricpath arguments is a prefix in the PMNS, see pmns(5). All of the files defining the PMNS must be located within the directory that contains the root of the PMNS, and this would typically be $PCP_VAR_DIR/pmns for the default PMNS, and this would typically imply running pmnsdel as root. Provided some initial integrity checks are satisfied, pmnsdel will update the necessary PMNS files. Should an error be encountered the original namespace is restored. Note that any PMNS files that are no longer referenced by the modified namespace will not be removed, even though their contents are not part of the new namespace. The -d option allows the resultant PMNS to optionally contain duplicate PMIDs with different names in the PMNS. By default this condition is considered an error. CAVEAT
Once the writing of the new namespace file has begun, the signals SIGINT, SIGHUP and SIGTERM will be ignored to protect the integrity of the new files. FILES
$PCP_VAR_DIR/pmns/root the default PMNS, when then 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). SEE ALSO
pmnsadd(1), pmnsmerge(1), pcp.conf(5), pcp.env(5) and pmns(5). Performance Co-Pilot PCP PMNSDEL(1)