From 2812f751f01095bef32500e811dade8851c9b17f Mon Sep 17 00:00:00 2001
From: Gareth Davies <shaolintiger@gmail.com>
Date: Thu, 16 May 2013 18:07:01 +0800
Subject: [PATCH 1/4] Added new non Ruby based Unicorn Plugin

The existing Unicorn plugins are written in Ruby, which didn't work well for me due to ENV variables etc.

This plugin monitors number of workers, total memory used and average memory per process for Unicorn.

ln -s /usr/share/munin/plugins/unicorn_ /etc/munin/plugins/unicorn_average
ln -s /usr/share/munin/plugins/unicorn_ /etc/munin/plugins/unicorn_memory
ln -s /usr/share/munin/plugins/unicorn_ /etc/munin/plugins/unicorn_processes

It can easily be adapated to any multi threaded server by just changing the value it searches for 'unicorn worker' in this case.
---
 plugins/unicorn/unicorn_ | 56 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 plugins/unicorn/unicorn_

diff --git a/plugins/unicorn/unicorn_ b/plugins/unicorn/unicorn_
new file mode 100644
index 00000000..eac0453f
--- /dev/null
+++ b/plugins/unicorn/unicorn_
@@ -0,0 +1,56 @@
+
+#!/bin/bash
+# Copyright (c) 2013 Gareth Davies (shaolintiger@gmail.com www.shaolintiger.com)
+# License GPLv2
+
+mode=`echo $0 | cut -d _ -f 2`
+
+if [ "$1" = "suggest" ]; then
+        echo "memory"
+        echo "processes"
+        echo "average"
+        exit 0
+fi
+
+if [ "$mode" = "memory" ]; then
+        if [ "$1" = "config" ]; then
+                echo "graph_title Unicorn Memory"
+                echo "graph_vlabel RAM"
+                echo "graph_category Unicorn"
+                echo "graph_args --base 1024"
+                echo "ram.label RAM"
+                exit 0
+        else
+        echo -n "ram.value "
+        ps awwwux | grep 'unicorn worker' | grep -v grep | awk '{total_mem = $6 * 1024 + total_mem; total_proc++} END{printf("%d\n", total_mem / total_proc)}'
+        fi
+
+elif [ "$mode" = "processes" ]; then
+        if [ "$1" = "config" ]; then
+                echo "graph_title Unicorn Processes"
+                echo "graph_vlabel Processes"
+                echo "graph_category Unicorn"
+                echo "processes.label active processes"
+        else
+                echo -n "processes.value "
+                ps awwwux | grep 'unicorn worker' | grep -v grep | wc -l
+                exit 0
+        fi
+
+elif [ "$mode" = "average" ]; then
+        if [ "$1" = "average" ]; then
+        echo 'graph_title Unicorn Average Process Size'
+        echo 'graph_args --base 1024 -l 0 '
+        echo 'graph_vlabel Unicorn Average Process Size'
+        echo 'graph_category Unicorn'
+        echo 'php_average.label Unicorn Average Proccess Size'
+        echo 'php_average.draw LINE2'
+        echo 'php_average.info The average process size for Unicorn'
+        else
+                echo -n "average.value "
+                ps awwwux | grep 'unicorn worker' | grep -v grep | grep -v master | awk '{total_mem = $6 * 1024 + total_mem; total_proc++} END{printf("%d\n", total_mem / total_proc)}'
+                exit 0
+        fi
+
+fi
+exit 0

From 8ff6e0fdf22cc083a8ba7081fd7ba224c3f371f2 Mon Sep 17 00:00:00 2001
From: Gareth Davies <shaolintiger@gmail.com>
Date: Thu, 16 May 2013 18:57:51 +0800
Subject: [PATCH 2/4] Update unicorn_

- Fixed memory and average giving same results
- Fixed error in average graphing
---
 plugins/unicorn/unicorn_ | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/plugins/unicorn/unicorn_ b/plugins/unicorn/unicorn_
index eac0453f..533ccddf 100644
--- a/plugins/unicorn/unicorn_
+++ b/plugins/unicorn/unicorn_
@@ -1,4 +1,3 @@
-
 #!/bin/bash
 # Copyright (c) 2013 Gareth Davies (shaolintiger@gmail.com www.shaolintiger.com)
 # License GPLv2
@@ -14,15 +13,23 @@ fi
 
 if [ "$mode" = "memory" ]; then
         if [ "$1" = "config" ]; then
-                echo "graph_title Unicorn Memory"
-                echo "graph_vlabel RAM"
+                echo "graph_title Total Unicorn Memory"
+                echo "graph_vlabel Total RAM"
                 echo "graph_category Unicorn"
                 echo "graph_args --base 1024"
-                echo "ram.label RAM"
+                echo "ram.label Total RAM"
                 exit 0
         else
-        echo -n "ram.value "
-        ps awwwux | grep 'unicorn worker' | grep -v grep | awk '{total_mem = $6 * 1024 + total_mem; total_proc++} END{printf("%d\n", total_mem / total_proc)}'
+
+        memory_array=(`ps auwx | grep "unicorn worker" | grep -v grep | awk '{print $6 }'`)
+
+        for i in "${memory_array[@]}"
+            do
+                 sum=$(( $sum + $i ))
+        done
+                 echo -n "ram.value "
+                 echo $sum
+
         fi
 
 elif [ "$mode" = "processes" ]; then
@@ -38,14 +45,14 @@ elif [ "$mode" = "processes" ]; then
         fi
 
 elif [ "$mode" = "average" ]; then
-        if [ "$1" = "average" ]; then
+        if [ "$1" = "config" ]; then
         echo 'graph_title Unicorn Average Process Size'
         echo 'graph_args --base 1024 -l 0 '
         echo 'graph_vlabel Unicorn Average Process Size'
         echo 'graph_category Unicorn'
-        echo 'php_average.label Unicorn Average Proccess Size'
-        echo 'php_average.draw LINE2'
-        echo 'php_average.info The average process size for Unicorn'
+        echo 'unicorn_average.label Unicorn Average Proccess Size'
+        echo 'unicorn_average.draw LINE2'
+        echo 'unicorn_average.info The average process size for Unicorn'
         else
                 echo -n "average.value "
                 ps awwwux | grep 'unicorn worker' | grep -v grep | grep -v master | awk '{total_mem = $6 * 1024 + total_mem; total_proc++} END{printf("%d\n", total_mem / total_proc)}'
@@ -54,3 +61,4 @@ elif [ "$mode" = "average" ]; then
 
 fi
 exit 0
+

From 9dfe0f34ca4968ebc298636e4d128be5d2233323 Mon Sep 17 00:00:00 2001
From: Gareth Davies <shaolintiger@gmail.com>
Date: Thu, 16 May 2013 19:27:13 +0800
Subject: [PATCH 3/4] Fixed average memory graphing label error.

Fixed average memory graphing label error.
---
 plugins/unicorn/unicorn_ | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/plugins/unicorn/unicorn_ b/plugins/unicorn/unicorn_
index 533ccddf..eb39ac39 100644
--- a/plugins/unicorn/unicorn_
+++ b/plugins/unicorn/unicorn_
@@ -48,17 +48,16 @@ elif [ "$mode" = "average" ]; then
         if [ "$1" = "config" ]; then
         echo 'graph_title Unicorn Average Process Size'
         echo 'graph_args --base 1024 -l 0 '
-        echo 'graph_vlabel Unicorn Average Process Size'
+        echo 'graph_vlabel Average Process Size'
         echo 'graph_category Unicorn'
-        echo 'unicorn_average.label Unicorn Average Proccess Size'
+        echo 'unicorn_average.label Average Process Size'
         echo 'unicorn_average.draw LINE2'
         echo 'unicorn_average.info The average process size for Unicorn'
         else
-                echo -n "average.value "
+                echo -n "unicorn_average.value "
                 ps awwwux | grep 'unicorn worker' | grep -v grep | grep -v master | awk '{total_mem = $6 * 1024 + total_mem; total_proc++} END{printf("%d\n", total_mem / total_proc)}'
                 exit 0
         fi
 
 fi
 exit 0
-

From 6274c3af80cc3e6fb3197d6c5a153d2ec9063ab6 Mon Sep 17 00:00:00 2001
From: Gareth Davies <shaolintiger@gmail.com>
Date: Wed, 29 May 2013 06:21:11 +0800
Subject: [PATCH 4/4] Fixed total memory being in the wrong scale

---
 plugins/unicorn/unicorn_ | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/unicorn/unicorn_ b/plugins/unicorn/unicorn_
index eb39ac39..74a7e30a 100644
--- a/plugins/unicorn/unicorn_
+++ b/plugins/unicorn/unicorn_
@@ -25,7 +25,7 @@ if [ "$mode" = "memory" ]; then
 
         for i in "${memory_array[@]}"
             do
-                 sum=$(( $sum + $i ))
+                 sum=$(( $sum + ( $i * 1024) ))
         done
                  echo -n "ram.value "
                  echo $sum