summaryrefslogtreecommitdiffstats
path: root/charts.d/cpufreq.chart.sh
diff options
context:
space:
mode:
Diffstat (limited to '')
-rwxr-xr-xcharts.d/cpufreq.chart.sh83
1 files changed, 83 insertions, 0 deletions
diff --git a/charts.d/cpufreq.chart.sh b/charts.d/cpufreq.chart.sh
new file mode 100755
index 000000000..6a968237d
--- /dev/null
+++ b/charts.d/cpufreq.chart.sh
@@ -0,0 +1,83 @@
+#!/bin/sh
+
+# if this chart is called X.chart.sh, then all functions and global variables
+# must start with X_
+
+cpufreq_sys_dir="/sys/devices"
+cpufreq_sys_depth=10
+cpufreq_source_update=1
+
+# _update_every is a special variable - it holds the number of seconds
+# between the calls of the _update() function
+cpufreq_update_every=
+cpufreq_priority=10000
+
+cpufreq_find_all_files() {
+ find $1 -maxdepth $cpufreq_sys_depth -name scaling_cur_freq 2>/dev/null
+}
+
+# _check is called once, to find out if this chart should be enabled or not
+cpufreq_check() {
+
+ # this should return:
+ # - 0 to enable the chart
+ # - 1 to disable the chart
+
+ [ -z "$( cpufreq_find_all_files $cpufreq_sys_dir )" ] && return 1
+ return 0
+}
+
+# _create is called once, to create the charts
+cpufreq_create() {
+ local dir= file= id= i=
+
+ # we create a script with the source of the
+ # cpufreq_update() function
+ # - the highest speed we can achieve -
+ [ $cpufreq_source_update -eq 1 ] && echo >$TMP_DIR/cpufreq.sh "cpufreq_update() {"
+
+ echo "CHART cpu.cpufreq '' 'CPU Clock' 'MHz' 'cpufreq' '' line $[cpufreq_priority + 1] $cpufreq_update_every"
+ echo >>$TMP_DIR/cpufreq.sh "echo \"BEGIN cpu.cpufreq \$1\""
+
+ i=0
+ for file in $( cpufreq_find_all_files $cpufreq_sys_dir | sort -u )
+ do
+ i=$(( i + 1 ))
+ dir=$( dirname $file )
+ cpu=
+
+ [ -f $dir/affected_cpus ] && cpu=$( cat $dir/affected_cpus )
+ [ -z "$cpu" ] && cpu="$i.a"
+
+ id="$( fixid "cpu$cpu" )"
+
+ echo >&2 "charts.d: cpufreq: on file='$file', dir='$dir', cpu='$cpu', id='$id'"
+
+ echo "DIMENSION $id '$id' absolute 1 1000"
+ echo >>$TMP_DIR/cpufreq.sh "printf \"SET $id = \"; cat $file "
+ done
+ echo >>$TMP_DIR/cpufreq.sh "echo END"
+
+ [ $cpufreq_source_update -eq 1 ] && echo >>$TMP_DIR/cpufreq.sh "}"
+ # cat >&2 $TMP_DIR/cpufreq.sh
+
+ # ok, load the function cpufreq_update() we created
+ [ $cpufreq_source_update -eq 1 ] && . $TMP_DIR/cpufreq.sh
+
+ return 0
+}
+
+# _update is called continiously, to collect the values
+cpufreq_update() {
+ # the first argument to this function is the microseconds since last update
+ # pass this parameter to the BEGIN statement (see bellow).
+
+ # do all the work to collect / calculate the values
+ # for each dimension
+ # remember: KEEP IT SIMPLE AND SHORT
+
+ [ $cpufreq_source_update -eq 0 ] && . $TMP_DIR/cpufreq.sh $1
+
+ return 0
+}
+