#!/bin/bash
 #

 # lib/dstat

 # Functions to start and stop dstat
 
 # Dependencies:
 #
 # - ``functions`` file
 
 # ``stack.sh`` calls the entry points in this order:
 #
 # - start_dstat
 # - stop_dstat
 
 # Save trace setting

 _XTRACE_DSTAT=$(set +o | grep xtrace)

 set +o xtrace
 

 # start_dstat() - Start running processes

 function start_dstat {
     # A better kind of sysstat, with the top process per time slice

     run_process dstat "$TOP_DIR/tools/dstat.sh $LOGDIR"

     # To enable memory_tracker add:
     #    enable_service memory_tracker

     # to your localrc

     run_process memory_tracker "$TOP_DIR/tools/memory_tracker.sh" "" "root"

 
     # remove support for the old name when it's no longer used (sometime in Queens)
     if is_service_enabled peakmem_tracker; then
         deprecated "Use of peakmem_tracker in devstack is deprecated, use memory_tracker instead"

         run_process peakmem_tracker "$TOP_DIR/tools/memory_tracker.sh" "" "root"

     fi

 }
 
 # stop_dstat() stop dstat process
 function stop_dstat {

     stop_process dstat

     stop_process memory_tracker

 }
 
 # Restore xtrace

 $_XTRACE_DSTAT