NAME
pmIDStr - convert a performance metric identifier into a string
C SYNOPSIS
#include <pcp/pmapi.h>
const char *pmIDStr(pmID pmid)
cc ... -lpcp
DESCRIPTION
For use in error and diagnostic messages, return a ‘human readable’
version of the specified Performance Metric Identifier (PMID).
Internally, a PMID is encoded as follows;
typedef struct {
int pad:2;
unsigned int domain:8;
unsigned int cluster:12;
unsigned int item:10;
} __pmID_int;
pmIDStr returns a string with each of the domain, cluster and item
subfields appearing as decimal numbers, separated by periods.
The string value is held in a single static buffer, so the returned
value is only valid until the next call to pmIDStr.
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 configuration
file, as described in pcp.conf(4). Values for these variables may be
obtained programatically using the pmGetConfig(3) function.
SEE ALSO
PMAPI(3), pmGetConfig(3), pmInDomStr(3), pmLookupDesc(3), pcp.conf(4)
and pcp.env(4).