diff --git a/src/Monolog/Processor/MemoryPeakUsageProcessor.php b/src/Monolog/Processor/MemoryPeakUsageProcessor.php
new file mode 100644
index 00000000..cb2ca210
--- /dev/null
+++ b/src/Monolog/Processor/MemoryPeakUsageProcessor.php
@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Processor;
+
+use Monolog\Processor\MemoryProcessor;
+
+/**
+ * Injects memory_get_peak_usage in all records
+ *
+ * @see Monolog\Processor\MemoryProcessor__construct() for options
+ * @author Rob Jensen
+ */
+class MemoryPeakUsageProcessor extends MemoryProcessor
+{
+
+    /**
+     * @param array $record
+     * @return array
+     */
+    public function __invoke(array $record)
+    {
+        $bytes = memory_get_peak_usage($this->realUsage);
+        $formatted = MemoryProcessor::formatBytes($bytes);
+
+        $record['extra'] = array_merge(
+            $record['extra'],
+            array(
+                'memory_peak_usage' => $formatted,
+            )
+        );
+
+        return $record;
+    }
+}
diff --git a/src/Monolog/Processor/MemoryProcessor.php b/src/Monolog/Processor/MemoryProcessor.php
new file mode 100644
index 00000000..e2efc7b8
--- /dev/null
+++ b/src/Monolog/Processor/MemoryProcessor.php
@@ -0,0 +1,51 @@
+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Processor;
+
+/**
+ * Some methods that are common for all memory processors
+ * @author Rob Jensen
+ */
+class MemoryProcessor
+{
+
+    protected $realUsage;
+
+    /**
+     * @param boolean $realUsage
+     */
+    public function __construct($realUsage = true)
+    {
+        $this->realUsage = (boolean) $realUsage;
+    }
+
+    /**
+     * Formats bytes into a human readable string
+     *
+     * @param int $bytes
+     * @return string
+     */
+    public static function formatBytes($bytes)
+    {
+        $bytes = (int) $bytes;
+        if ($bytes > 1024*1024) {
+            $bytes = round($bytes/1024/1024, 2).' MB';
+        } elseif ($bytes > 1024) {
+            $bytes = round($bytes/1024, 2).' KB';
+        } else {
+            $bytes .= ' B';
+        }
+
+        return $bytes;
+    }
+
+}
diff --git a/src/Monolog/Processor/MemoryUsageProcessor.php b/src/Monolog/Processor/MemoryUsageProcessor.php
new file mode 100644
index 00000000..bcbed6b4
--- /dev/null
+++ b/src/Monolog/Processor/MemoryUsageProcessor.php
@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Processor;
+
+use Monolog\Processor\MemoryProcessor;
+
+/**
+ * Injects memory_get_usage in all records
+ * @see Monolog\Processor\MemoryProcessor__construct() for options
+ * @author Rob Jensen
+ */
+class MemoryUsageProcessor extends MemoryProcessor
+{
+
+    /**
+     * @param array $record
+     * @return array
+     */
+    public function __invoke(array $record)
+    {
+        $bytes = memory_get_usage($this->realUsage);
+        $formatted = MemoryProcessor::formatBytes($bytes);
+
+        $record['extra'] = array_merge(
+            $record['extra'],
+            array(
+                'memory_usage' => $formatted,
+            )
+        );
+
+        return $record;
+    }
+}