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-rw-r--r--collectors/charts.d.plugin/cpufreq/cpufreq.chart.sh88
1 files changed, 88 insertions, 0 deletions
diff --git a/collectors/charts.d.plugin/cpufreq/cpufreq.chart.sh b/collectors/charts.d.plugin/cpufreq/cpufreq.chart.sh
new file mode 100644
index 0000000..68708d9
--- /dev/null
+++ b/collectors/charts.d.plugin/cpufreq/cpufreq.chart.sh
@@ -0,0 +1,88 @@
+# shellcheck shell=bash
+# no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
+#
+
+# if this chart is called X.chart.sh, then all functions and global variables
+# must start with X_
+
+cpufreq_sys_dir="${NETDATA_HOST_PREFIX}/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")"
+
+ debug "file='$file', dir='$dir', cpu='$cpu', id='$id'"
+
+ echo "DIMENSION $id '$id' absolute 1 1000"
+ echo >>"$TMP_DIR/cpufreq.sh" "echo \"SET $id = \"\$(< $file )"
+ done
+ echo >>"$TMP_DIR/cpufreq.sh" "echo END"
+
+ [ $cpufreq_source_update -eq 1 ] && echo >>"$TMP_DIR/cpufreq.sh" "}"
+
+ # ok, load the function cpufreq_update() we created
+ # shellcheck disable=SC1090
+ [ $cpufreq_source_update -eq 1 ] && . "$TMP_DIR/cpufreq.sh"
+
+ return 0
+}
+
+# _update is called continuously, 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
+ # shellcheck disable=SC1090
+ [ $cpufreq_source_update -eq 0 ] && . "$TMP_DIR/cpufreq.sh" "$1"
+
+ return 0
+}