репортер показателей производительности  (performance metrics reporter)
  
Окружение PCP (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(5).
       For environment variables affecting PCP tools, see
       pmGetOptions(3).