add database.profile config option.

application/config/database.php

@@ -2,6 +2,20 @@
 
 return array(
 
+	/*
+	|--------------------------------------------------------------------------
+	| Database Query Logging
+	|--------------------------------------------------------------------------
+	|
+	| By default, the SQL, bindings, and execution time are logged in an array
+	| for you to review. They can be retrieved via the DB::profile() method.
+	| However, in some situations, you may want to disable logging for
+	| ultra high-volume database work. You can do so here.
+	|
+	*/
+
+	'profile' => true,
+
 	/*
 	|--------------------------------------------------------------------------
 	| Default Database Connection

laravel/database/connection.php

-<?php namespace Laravel\Database; use PDO, PDOStatement, Laravel\Event;
+<?php namespace Laravel\Database; use PDO, PDOStatement, Laravel\Config, Laravel\Event;
 
 class Connection {
 
@@ -222,7 +222,10 @@ class Connection {
 		// Once we have execute the query, we log the SQL, bindings, and
 		// execution time in a static array that is accessed by all of
 		// the connections used by the application.
+		if (Config::get('database.profile'))
+		{
 			$this->log($sql, $bindings, $time);
+		}
 
 		return array($statement, $result);
 	}