--- src/include/httpd.h.orig	2008-11-13 18:34:02.000000000 +0300
+++ src/include/httpd.h	2008-11-13 18:34:30.000000000 +0300
@@ -668,6 +668,7 @@
     const char *hostname;	/* Host, as set by full URI or Host: */
 
     time_t request_time;	/* When the request started */
+    struct timeval request_utime; /* When the request started (usec) */
 
     const char *status_line;	/* Status line, if set by script */
     int status;			/* In any case */
--- src/main/http_main.c.orig	2008-11-13 18:32:38.000000000 +0300
+++ src/main/http_main.c	2008-11-13 18:33:06.000000000 +0300
@@ -1589,6 +1589,7 @@
 	    /* in some cases we come here before setting the time */
 	    if (log_req->request_time == 0) {
                 log_req->request_time = time(NULL);
+                gettimeofday(&log_req->request_utime,NULL);
 	    }
 	    ap_log_transaction(log_req);
 	}
--- src/main/http_protocol.c.orig	2008-11-13 18:33:21.000000000 +0300
+++ src/main/http_protocol.c	2008-11-13 18:33:48.000000000 +0300
@@ -1007,6 +1007,7 @@
     ap_bsetflag(conn->client, B_SAFEREAD, 0);
 
     r->request_time = time(NULL);
+    gettimeofday(&r->request_utime,NULL);
     r->the_request = ap_pstrdup(r->pool, l);
     r->method = ap_getword_white(r->pool, &ll);
     uri = ap_getword_white(r->pool, &ll);
--- src/modules/standard/mod_log_config.c.orig	2008-11-13 18:27:40.000000000 +0300
+++ src/modules/standard/mod_log_config.c	2008-11-13 18:35:02.000000000 +0300
@@ -405,7 +405,13 @@
 
 static const char *log_request_duration(request_rec *r, char *a)
 {
-    return ap_psprintf(r->pool, "%ld", time(NULL) - r->request_time);
+    struct timeval tp;
+    double tv1,tv2;
+
+    tv1 = r->request_utime.tv_sec + (double)r->request_utime.tv_usec/1000000;
+    gettimeofday(&tp, NULL);
+    tv2 = tp.tv_sec + (double)tp.tv_usec/1000000;
+    return ap_psprintf(r->pool, "%.3f", tv2 - tv1);
 }
 
 /* These next two routines use the canonical name:port so that log