From 4f1ea2198073976bd94fc4f9dfa299f3bd8f5b6c Mon Sep 17 00:00:00 2001
From: Florian Fida <mnx.tmp@fida.biz>
Date: Wed, 9 Feb 2011 19:46:33 +0100
Subject: [PATCH] Initial version

---
 plugins/other/multicpu | 72 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100755 plugins/other/multicpu

diff --git a/plugins/other/multicpu b/plugins/other/multicpu
new file mode 100755
index 00000000..e0015c03
--- /dev/null
+++ b/plugins/other/multicpu
@@ -0,0 +1,72 @@
+#!/usr/bin/php
+<?
+  /*
+    multicpu monitors the cpu usage of multiple processes.
+    you can configure the list of processes via munin's configuration
+
+    [multicpu]
+      env.ps_filter apache2 mysqld
+
+    I have very little knowlege about munin plugins, it just 'works fine for me'.
+    Please feel free to improve :)
+
+    0.1 initial release - Florian Fida
+  */
+
+  // make sure that paht to ps is valid for your system
+  $ps_cmd = '/bin/ps -eo "%C,%a"';
+
+  // list of processes to monitor, can also be set by env.ps_filter in munin config
+  $ps_filter = array(
+    'apache2', 'mysqld', 'exim', 'php', 'perl', 'ruby', 'bftpd'
+  );
+
+
+  $cmdl = implode(' ', $argv);
+  $config = stripos($cmdl, 'config') !== false;
+
+  if(!empty($_ENV['ps_filter'])){
+    $ps_filter = explode(' ', $_ENV['ps_filter']);
+  }
+
+  if($config){
+    $out  = "multigraph multicpu_pcpu\n";
+    $out .= "graph_title CPU usage per process\n";
+    $out .= "graph_vlabel CPU usage [%]\n";
+    $out .= "graph_category processes\n";
+    foreach($ps_filter as $process) $out .= "$process.label $process\n";
+
+    $out .= "multigraph multicpu_cnt\n";
+    $out .= "graph_title Instances per process\n";
+    $out .= "graph_vlabel count\n";
+    $out .= "graph_category processes\n";
+    foreach($ps_filter as $process) $out .= "$process.label $process\n";
+
+    echo $out."\n";
+    exit;
+  }
+
+  $ps_txt = shell_exec($ps_cmd);
+  $ps_a = explode("\n", $ps_txt);
+
+  $result = array();
+  $result_cnt = array();
+  foreach($ps_filter as $process){
+    if(!isset($result[$process])) $result[$process] = 0;
+    if(!isset($result_cnt[$process])) $result_cnt[$process] = 0;
+    foreach($ps_a as $line){
+      $line_a = explode(',', $line, 2);
+      if(count($line_a) == 2){
+        if(stripos($line_a[1], $process) !== false){
+          $result[$process] += floatval($line_a[0]);
+          ++$result_cnt[$process];
+        }
+      }
+    }
+  }
+
+  echo "multigraph multicpu_pcpu\n";
+  foreach($result as $process => $value) echo "$process.value $value\n";
+  echo "multigraph multicpu_cnt\n";
+  foreach($result_cnt as $process => $value) echo "$process.value $value\n";
+