PMDAPMID - Online Linux Manual PageSection : 3
Updated : PCP
Source : Performance Co-Pilot

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NAMEpmdaPMID − translate a dynamic performance metric name into a PMID

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C SYNOPSIS#include <pcp/pmapi.h>
#include <pcp/pmda.h> int pmdaPMID(char *name, pmID *pmid, pmdaExt *pmda); cc ... −lpcp_pmda −lpcp

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DESCRIPTIONAs part of the Performance Metrics Domain Agent (PMDA) API (see PMDA(3)), pmdaPMID is the generic callback for translating a dynamic metric name into a PMID ( pmid). Because implementing dynamic performance metrics requires specific PMDA support, and the facility is an optional component of a PMDA (most PMDAs do not support dynamic performance metrics), pmdaPMID is a skeleton implementation that returns PM_ERR_NAME. A PMDA that supports dynamic performance metrics will provide a private callback that replaces pmdaPMID (by assignment to version.four.pmid of the pmdaInterface structure) and implements the translation from a dynamic performance metric name into the associated pmid.

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DIAGNOSTICSpmdaPMID returns PM_ERR_NAME if the name is not recognized or cannot be translated, else returns 0.

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CAVEATThe PMDA must be using PMDA_PROTOCOL_4 or later, as specified in the call to pmdaDSO(3) or pmdaDaemon(3).

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SEE ALSOPMAPI(3), PMDA(3), pmdaDaemon(3), pmdaDSO(3), pmdaMain(3) and pmLookupName(3). 0

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