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

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NAMEpmIDStr, pmIDStr_r − convert a performance metric identifier into a string

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C SYNOPSIS#include <pcp/pmapi.h> const char *pmIDStr(pmID pmid);
char *pmIDStr_r(pmID pmid, char *buf, int buflen); cc ... −lpcp

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DESCRIPTIONFor use in error and diagnostic messages, pmIDStr returns a `human readable' version of the specified Performance Metric Identifier (PMID). The pmIDStr_r function does the same, but stores the result in a user-supplied buffer buf of length buflen, which should have room for at least 20 bytes. Internally, a PMID is encoded with three fields: domain, cluster and item. pmIDStr returns a string with each of the fields appearing as decimal numbers, separated by periods. The string value result from pmIDStr is held in a single static buffer, so the returned value is only valid until the next call to pmIDStr.

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NOTESpmIDStr returns a pointer to a static buffer and hence is not thread-safe. Multi-threaded applications should use pmIDStr_r instead.

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

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SEE ALSOPMAPI(3), pmGetConfig(3), pmInDomStr(3), pmTypeStr(3), pmSemStr(3), pmUnitsStr(3), pmLookupDesc(3), pcp.conf(5) and pcp.env(5). 0

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