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PMNSDEL(1)									       PMNSDEL(1)

       pmnsdel - delete a subtree of names from the Performance Co-Pilot PMNS

       $PCP_BINADM_DIR/pmnsdel [-d] [-n namespace] metricpath [ ... ]

       pmnsdel removes subtrees of names from a Performance Metrics Name Space (PMNS), as used by
       the components of the Performance Co-Pilot (PCP).

       Normally pmnsdel operates on the default Performance Metrics Namespace (PMNS), however  if
       the -n option is specified an alternative namespace is used from the file namespace.

       The  default PMNS is found in the file $PCP_VAR_DIR/pmns/root unless the environment vari-
       able PMNS_DEFAULT is set, in which case the value is assumed to be  the	pathname  to  the
       file containing the default PMNS.

       The  metric names to be deleted are all those for which one of the metricpath arguments is
       a prefix in the PMNS, see pmns(5).

       All of the files defining the PMNS must be located within the directory that contains  the
       root  of the PMNS, and this would typically be $PCP_VAR_DIR/pmns for the default PMNS, and
       this would typically imply running pmnsdel as root.

       Provided some initial integrity checks are satisfied, pmnsdel will  update  the	necessary
       PMNS files.  Should an error be encountered the original namespace is restored.	Note that
       any PMNS files that are no longer  referenced  by  the  modified  namespace  will  not  be
       removed, even though their contents are not part of the new namespace.

       The -d option allows the resultant PMNS to optionally contain duplicate PMIDs with differ-
       ent names in the PMNS.  By default this condition is considered an error.

       Once the writing of the new namespace file has  begun,  the  signals  SIGINT,  SIGHUP  and
       SIGTERM will be ignored to protect the integrity of the new files.

       $PCP_VAR_DIR/pmns/root	the  default PMNS, when then environment variable PMNS_DEFAULT is

       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 config-
       uration file, as described in pcp.conf(5).

       pmnsadd(1), pmnsmerge(1), pcp.conf(5), pcp.env(5) and pmns(5).

Performance Co-Pilot			       PCP				       PMNSDEL(1)
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