added proc_loadavg.c

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;
+}

web/index.html

@@ -946,6 +946,30 @@ <h4 class="modal-title" id="optionsModalLabel">netdata dashboard options</h4>
 		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]
 	},