From 894141ec4a8705690810cf5a0b886244bd6312a8 Mon Sep 17 00:00:00 2001
From: "Costa Tsaousis (ktsaou)" <costa@tsaousis.gr>
Date: Wed, 10 Feb 2016 00:40:08 +0200
Subject: added proc_loadavg.c

---
 src/proc_loadavg.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 web/index.html     | 24 +++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100755 src/proc_loadavg.c

diff --git a/src/proc_loadavg.c b/src/proc_loadavg.c
new file mode 100755
index 0000000000..ebef7f4c1b
--- /dev/null
+++ b/src/proc_loadavg.c
@@ -0,0 +1,88 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "common.h"
+#include "appconfig.h"
+#include "procfile.h"
+#include "rrd.h"
+#include "plugin_proc.h"
+
+int do_proc_loadavg(int update_every, unsigned long long dt) {
+	static procfile *ff = NULL;
+	static int do_loadavg = -1, do_all_processes = -1;
+
+	if(dt) {};
+
+	if(!ff) {
+		char filename[FILENAME_MAX + 1];
+		snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/loadavg");
+		ff = procfile_open(config_get("plugin:proc:/proc/loadavg", "filename to monitor", filename), " \t,:|/", PROCFILE_FLAG_DEFAULT);
+	}
+	if(!ff) return 1;
+
+	ff = procfile_readall(ff);
+	if(!ff) return 0; // we return 0, so that we will retry to open it next time
+
+	if(do_loadavg == -1)		do_loadavg 			= config_get_boolean("plugin:proc:/proc/loadavg", "enable load average", 1);
+	if(do_all_processes == -1)	do_all_processes 	= config_get_boolean("plugin:proc:/proc/loadavg", "enable total processes", 1);
+
+	if(procfile_lines(ff) < 1) {
+		error("/proc/loadavg has no lines.");
+		return 1;
+	}
+	if(procfile_linewords(ff, 0) < 6) {
+		error("/proc/loadavg has less than 6 words in it.");
+		return 1;
+	}
+
+	double load1 = strtod(procfile_lineword(ff, 0, 0), NULL);
+	double load5 = strtod(procfile_lineword(ff, 0, 1), NULL);
+	double load15 = strtod(procfile_lineword(ff, 0, 2), NULL);
+
+	//unsigned long long running_processes	= strtoull(procfile_lineword(ff, 0, 3), NULL, 10);
+	unsigned long long active_processes		= strtoull(procfile_lineword(ff, 0, 4), NULL, 10);
+	//unsigned long long next_pid				= strtoull(procfile_lineword(ff, 0, 5), NULL, 10);
+
+
+	RRDSET *st;
+
+	// --------------------------------------------------------------------
+
+	if(do_loadavg) {
+		st = rrdset_find_byname("system.load");
+		if(!st) {
+			st = rrdset_create("system", "load", NULL, "load", NULL, "System Load Average", "load", 100, update_every, RRDSET_TYPE_LINE);
+
+			rrddim_add(st, "load1", NULL, 1, 1000, RRDDIM_ABSOLUTE);
+			rrddim_add(st, "load5", NULL, 1, 1000, RRDDIM_ABSOLUTE);
+			rrddim_add(st, "load15", NULL, 1, 1000, RRDDIM_ABSOLUTE);
+		}
+		else rrdset_next(st);
+
+		rrddim_set(st, "load1", load1 * 1000);
+		rrddim_set(st, "load5", load5 * 1000);
+		rrddim_set(st, "load15", load15 * 1000);
+		rrdset_done(st);
+	}
+
+	// --------------------------------------------------------------------
+
+	if(do_all_processes) {
+		st = rrdset_find_byname("system.active_processes");
+		if(!st) {
+			st = rrdset_create("system", "active_processes", NULL, "processes", NULL, "System Active Processes", "processes", 750, update_every, RRDSET_TYPE_LINE);
+
+			rrddim_add(st, "active", NULL, 1, 1, RRDDIM_ABSOLUTE);
+		}
+		else rrdset_next(st);
+
+		rrddim_set(st, "active", active_processes);
+		rrdset_done(st);
+	}
+
+	return 0;
+}
diff --git a/web/index.html b/web/index.html
index 71a0d03cda..6ab15385ca 100755
--- a/web/index.html
+++ b/web/index.html
@@ -946,6 +946,30 @@ var chartData = {
 		info: 'System swap memory, read from <code>/proc/meminfo</code>.'
 	},
 
+	'mem.ksm_savings': {
+		heads: [
+			gaugeChart('Saved', '12%', 'savings', '#0099CC')
+		]
+	},
+
+	'mem.ksm_ratios': {
+		heads: [
+			function(id) {
+				return 	'<div data-netdata="' + id + '"'
+					+ ' data-gauge-max-value="100"'
+					+ ' data-chart-library="gauge"'
+					+ ' data-title="Savings"'
+					+ ' data-units="percentage %"'
+					+ ' data-gauge-adjust="width"'
+					+ ' data-width="12%"'
+					+ ' data-before="0"'
+					+ ' data-after="-CHART_DURATION"'
+					+ ' data-points="CHART_DURATION"'
+					+ ' role="application"></div>';
+			}
+		]
+	},
+
 	'mem.committed': {
 		colors: NETDATA.colors[3]
 	},
-- 
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