Now there are 2 kinds of plugins:

 - plugins.d plugins that are expected to always be in memory and execute
   continiously

 - charts.d scripts that are sourced by the charts.d plugin
   and are all executed together, lowering significantly the resources
   they require (compared to plugins)

1 files changed, 47 insertions, 0 deletions

diff --git a/charts.d/load_average.chart.sh b/charts.d/load_average.chart.sh
new file mode 100755
index 0000000000..e2c72494a9
--- /dev/null
+++ b/charts.d/load_average.chart.sh
@@ -0,0 +1,47 @@
+#!/bin/sh
+
+load_average_check() {
+	# this should return:
+	#  - 0 to enable the chart
+	#  - 1 to disable the chart
+
+	return 0
+}
+
+load_average_create() {
+	# create a chart with 3 dimensions
+cat <<EOF
+CHART example.load '' "System Load Average" "load" load load line 500 $update_every
+DIMENSION load1 '1 min' absolute 1 100
+DIMENSION load5 '5 mins' absolute 1 100
+DIMENSION load15 '15 mins' absolute 1 100
+EOF
+
+	return 0
+}
+
+load_average_update() {
+	# do all the work to collect / calculate the values
+	# for each dimension
+	# remember: KEEP IT SIMPLE AND SHORT
+
+	# here we parse the system average load
+	# it is decimal (with 2 decimal digits), so we remove the dot and
+	# at the definition we have divisor = 100, to have the graph show the right value
+	loadavg="`cat /proc/loadavg | sed -e "s/\.//g"`"
+	load1=`echo $loadavg | cut -d ' ' -f 1`
+	load5=`echo $loadavg | cut -d ' ' -f 2`
+	load15=`echo $loadavg | cut -d ' ' -f 3`
+
+	# write the result of the work.
+	cat <<VALUESEOF
+BEGIN example.load
+SET load1 = $load1
+SET load5 = $load5
+SET load15 = $load15
+END
+VALUESEOF
+
+	return 0
+}
+