initial checkin

README.md

@@ -1,2 +1,5 @@
-plugin-cpu_core
-===============
+graphdat-plugin-cpu-core
+========================
+
+This Graphdat Plugin reports the CPU utilization of each CPU core individually.
+In the legend will be the hostname followed by "-CX" where X is the core number.

index.js

@@ -0,0 +1,39 @@
+
+var _os = require('os');
+var _source = _os.hostname();
+var _interval = parseInt(process.argv[1]) || 1000;
+
+var _last;
+
+function poll()
+{
+	var cpus = _os.cpus();
+
+	for(var idx = 0; idx < cpus.length; idx++)
+	{
+		var e = cpus[idx];
+		e.total = 0;
+		for(var t in e.times)
+			e.total += e.times[t];
+	}
+
+	if (_last)
+	{
+		for(var idx = 0; idx < cpus.length; idx++)
+		{
+			var e = cpus[idx];
+			var l = _last[idx];
+			var user = (e.times.user - l.times.user)  /
+					   (e.total - l.total);
+
+			console.log('CPU_CORE %d %s-C%d',
+				user, _source, idx + 1);
+		}
+	}
+
+	_last = cpus;
+
+	setTimeout(poll, _interval);
+}
+
+poll();

plugin.json

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+{
+    "description" : "Provides per core CPU utilization",
+	"command" : "node index.js $(pollInterval)",
+	"metrics" : ["CPU_CORE"]
+}