pmDerivedErrStr - return error message from failure to parse derived metric definition

#include<pcp/pmapi.h>char*pmDerivedErrStr(void);cc...-lpcp

       When  pmRegisterDerived(3)  is  called  to  add  a  new  derived  metric  definition and an error occurs,
       pmDerivedErrStr may be called to return the associated error message.

       The pmRegisterDerivedMetric interface provides a convenience wrapper around  both  pmRegisterDerived  and
       pmDerivedErrStr.

pmDerivedErrStr - return error message from failure to parse derived metric definition

PCPIntro(1), PMAPI(3) and pmRegisterDerived(3).

Performance Co-Pilot                                                                          PMDERIVEDERRSTR(3)