charts.d/cpu_apps.chart.sh

   1 #!/bin/sh
   2
   3 cpu_apps_apps="netdata asterisk squid apache2 mysqld dovecot cupsd sshd named clamd smbd"
   4
   5 # these are required for computing memory in bytes and cpu in seconds
   6 #cpu_apps_pagesize="`getconf PAGESIZE`"
   7 cpu_apps_clockticks="`getconf CLK_TCK`"
   8
   9 cpu_apps_update_every=60
  10
  11 cpu_apps_check() {
  12         # this should return:
  13         #  - 0 to enable the chart
  14         #  - 1 to disable the chart
  15
  16         if [ -z "$cpu_apps_apps" ]
  17         then
  18                 echo >&2 "cpu_apps: Please set cpu_apps_apps='command1 command2 ...' in $confd/cpu_apps_apps.conf"
  19                 return 1
  20         fi
  21         return 0
  22 }
  23
  24 cpu_apps_bc_finalze=
  25
  26 cpu_apps_create() {
  27
  28         echo "CHART apps.cpu '' 'Apps CPU' 'milliseconds / $cpu_apps_update_every sec' apps apps stacked 20001 $cpu_apps_update_every"
  29
  30         local x=
  31         for x in $cpu_apps_apps
  32         do
  33                 echo "DIMENSION $x $x incremental 1000 $((cpu_apps_clockticks * cpu_apps_update_every))"
  34
  35                 # this string is needed later in the update() function
  36                 # to finalize the instructions for the bc command
  37                 cpu_apps_bc_finalze="$cpu_apps_bc_finalze \"SET $x = \"; $x;"
  38         done
  39         return 0
  40 }
  41
  42 cpu_apps_update() {
  43         # do all the work to collect / calculate the values
  44         # for each dimension
  45         # remember: KEEP IT SIMPLE AND SHORT
  46
  47         echo "BEGIN apps.cpu"
  48         ps -o pid,comm -C "$cpu_apps_apps" |\
  49                 grep -v "COMMAND" |\
  50                 (
  51                         while read pid name
  52                         do
  53                                 echo "$name+=`cat /proc/$pid/stat | cut -d ' ' -f 14-15`"
  54                         done
  55                 ) |\
  56                 (       sed -e "s/ \+/ /g" -e "s/ /+/g";
  57                         echo "$cpu_apps_bc_finalze"
  58                 ) | bc
  59         echo "END"
  60
  61         return 0
  62 }