Added 'use_microseconds' to the monolog configuration.

Author: ricardodevries

reference/configuration/monolog.rst

@@ -74,6 +74,11 @@ Full Default Configuration
                         id:                   ~ # Required (when the email_prototype is used)
                         method:               ~
                     formatter:            ~
+            # Setting this parameter to false forces the logger to reduce
+            # the precision in the datetime field of the log messages from
+            # microsecond to second. Avoiding a call to the microtime(true)
+            # function and the subsequent parsing.
+            use_microseconds:             true
 
     .. code-block:: xml
 
@@ -86,7 +91,13 @@ Full Default Configuration
                 http://symfony.com/schema/dic/monolog
                 http://symfony.com/schema/dic/monolog/monolog-1.0.xsd">
 
-            <monolog:config>
+            <!-- By default, use-microseconds is set to true
+                 including 'use-microseconds="false' forces
+                 the logger to reduce the precision in the
+                 datetime field of the log messages from
+                 microsecond to second. Avoiding a call to the
+                 microtime(true) function and the subsequent parsing. -->
+            <monolog:config use-microseconds="true">
                 <monolog:handler
                     name="syslog"
                     type="stream"