NAME

       pmDelProfile  -  delete instance(s) from the current PMAPI
       instance profile


C SYNOPSIS

       #include <pcp/pmapi.h>

       int   pmDelProfile(pmInDom   indom,   int   numinst,   int
       *instlist)

       cc ... -lpcp


DESCRIPTION

       The set of instances for performance metrics returned from
       a pmFetch(3) call may be filtered or restricted  using  an
       instance  profile.  There is one instance profile for each
       context the application creates at the Performance Metrics
       Application   Programming   Interface  (PMAPI),  and  each
       instance profile may include instances from  one  or  more
       instance domains (see pmLookupDesc(3)).

       pmDelProfile may be used to delete instance specifications
       from the instance profile of the current PMAPI context.

       In the simplest variant, the list of instances  identified
       by the instlist argument for the indom instance domain are
       removed from the instance profile.  The list  of  instance
       identifiers contains numinst values.

       The indom value would normally be extracted from a call to
       pmLookupDesc(3) for a particular performance  metric,  and
       the instances in instlist would typically be determined by
       calls to pmGetInDom(3) or pmLookupInDom(3).

       If indom equals PM_INDOM_NULL or numinst is zero, then all
       instance  domains  are selected for deletion.  If instlist
       is NULL, then all instances in the selected domain(s)  are
       removed from the profile.

       To  disable  all  available  instances in all domains, use
       pmDelProfile(PM_INDOM_NULL, 0, NULL).  This  is  the  only
       situation in which indom may be PM_INDOM_NULL.


SEE ALSO

       pmAddProfile(3),   PMAPI(3),   pmFetch(3),  pmGetInDom(3),
       pmLookupDesc(3),    pmLookupInDom(3),     pmNewContext(3),
       pmUseContext(3) and pmWhichContext(3).


DIAGNOSTICS

       PM_ERR_PROFILESPEC
              indom was PM_INDOM_NULL and instlist was not empty

       It is possible to delete non-existent instance domains and
       non-existent instances from an instance profile.  None  of
       the routines that use the instance profile will ever issue
       an error if you do  this.   The  cost  of  checking,  when
       checking is possible, outweighs any benefits.


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