--- ./modules/loggers/mod_log_config.c.dist	2010-05-05 07:24:35.000000000 +0100
+++ ./modules/loggers/mod_log_config.c	2010-05-05 07:27:44.000000000 +0100
@@ -105,6 +105,7 @@
  *                 be in strftime(3) format.
  * %...T:  the time taken to serve the request, in seconds.
  * %...D:  the time taken to serve the request, in micro seconds.
+ * %...M:  the time in microseconds
  * %...u:  remote user (from auth; may be bogus if return status (%s) is 401)
  * %...U:  the URL path requested.
  * %...v:  the configured name of the server (i.e. which virtual host?)
@@ -626,6 +627,12 @@
                         (apr_time_now() - r->request_time));
 }
 
+static const char *log_request_microseconds(request_rec *r, char *a)
+{
+    return apr_psprintf(r->pool, "%" APR_TIME_T_FMT,
+                        apr_time_now());
+}
+
 /* These next two routines use the canonical name:port so that log
  * parsers don't need to duplicate all the vhost parsing crud.
  */
@@ -1513,6 +1520,7 @@
         log_pfn_register(p, "k", log_requests_on_connection, 0);
         log_pfn_register(p, "r", log_request_line, 1);
         log_pfn_register(p, "D", log_request_duration_microseconds, 1);
+        log_pfn_register(p, "M", log_request_microseconds, 1);
         log_pfn_register(p, "T", log_request_duration, 1);
         log_pfn_register(p, "U", log_request_uri, 1);
         log_pfn_register(p, "s", log_status, 1);