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