Provided by: pcp_3.5.11_amd64 bug


       pmLoadDerivedConfig - load derived metric definitions from a file


       #include <pcp/pmapi.h>

       int pmLoadDerivedConfig(char *fname);

       cc ... -lpcp


       Each  line  of the file fname is either a comment line (with a ``#'' in the first position
       of the line) or the declaration of a derived performance metric, specified as:

       * the name of the derived metric, using the same ``dot notation'' syntax that is used  for
         PCP performance metrics, see PCPIntro(1) and pmns(4).

       * an equals sign (``='')

       * a valid expression for a derived metric, as described in pmRegisterDerived(3).

       White space is ignored in the lines.

       For  each  line containing a derived metric definition, BR pmRegisterDerived (3) is called
       to register the new derived metric.

       The result from pmLoadDerivedConfig will be the number  of  derived  metrics  loaded  from
       fname else a value less than zero in the case of an error.


       # sample derived metric definitions
       bad_in_pkts = +
       # note the following would need to be on a single line ... = 100 * delta( /
                   (delta( + delta(


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