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-rwxr-xr-xcharts.d/load_average.chart.sh64
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diff --git a/charts.d/load_average.chart.sh b/charts.d/load_average.chart.sh
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+#!/bin/sh
+
+load_average_update_every=5
+load_priority=100
+
+# this is an example charts.d collector
+# it is disabled by default.
+# there is no point to enable it, since netdata already
+# collects this information using its internal plugins.
+load_average_enabled=0
+
+load_average_check() {
+ # this should return:
+ # - 0 to enable the chart
+ # - 1 to disable the chart
+
+ if [ ${load_average_update_every} -lt 5 ]
+ then
+ # there is no meaning for shorter than 5 seconds
+ # the kernel changes this value every 5 seconds
+ load_average_update_every=5
+ fi
+
+ [ ${load_average_enabled} -eq 0 ] && return 1
+ return 0
+}
+
+load_average_create() {
+ # create a chart with 3 dimensions
+cat <<EOF
+CHART system.load '' "System Load Average" "load" load system.load line $[load_priority + 1] $load_average_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 system.load
+SET load1 = $load1
+SET load5 = $load5
+SET load15 = $load15
+END
+VALUESEOF
+
+ return 0
+}
+