$request_time has millisecond precision

src/http/modules/ngx_http_log_module.c

diff --git a/src/http/modules/ngx_http_log_module.c b/src/http/modules/ngx_http_log_module.c
index e4b861b..d3ebca4 100644
--- a/src/http/modules/ngx_http_log_module.c
+++ b/src/http/modules/ngx_http_log_module.c
@@ -170,7 +170,8 @@
     { ngx_string("time_local"), sizeof("28/Sep/1970:12:00:00 +0600") - 1,
                           ngx_http_log_time },
     { ngx_string("msec"), NGX_TIME_T_LEN + 4, ngx_http_log_msec },
-    { ngx_string("request_time"), NGX_TIME_T_LEN, ngx_http_log_request_time },
+    { ngx_string("request_time"), NGX_TIME_T_LEN + 4,
+                          ngx_http_log_request_time },
     { ngx_string("status"), 3, ngx_http_log_status },
     { ngx_string("bytes_sent"), NGX_OFF_T_LEN, ngx_http_log_bytes_sent },
     { ngx_string("body_bytes_sent"), NGX_OFF_T_LEN,
@@ -394,11 +395,15 @@
 ngx_http_log_request_time(ngx_http_request_t *r, u_char *buf,
     ngx_http_log_op_t *op)
 {
-    time_t  elapsed;
+    ngx_time_t      *tp;
+    ngx_msec_int_t   ms;
 
-    elapsed = ngx_time() - r->start_time;
+    tp = ngx_timeofday();
 
-    return ngx_sprintf(buf, "%T", elapsed);
+    ms = (tp->sec - r->start_sec) * 1000 + (tp->msec - r->start_msec);
+    ms = (ms >= 0) ? ms : 0;
+
+    return ngx_sprintf(buf, "%T.%03M", ms / 1000, ms % 1000);
 }
 
 

src/http/ngx_http_core_module.c

diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index 7fa0ba3..76f5e98 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -1353,8 +1353,6 @@
 
     sr->headers_in = r->headers_in;
 
-    sr->start_time = ngx_time();
-
     ngx_http_clear_content_length(sr);
     ngx_http_clear_accept_ranges(sr);
     ngx_http_clear_last_modified(sr);

src/http/ngx_http_request.c

diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 1a2e1bc..9b5d02f 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -212,6 +212,7 @@
 static void
 ngx_http_init_request(ngx_event_t *rev)
 {
+    ngx_time_t                 *tp;
     socklen_t                   len;
     ngx_uint_t                  i;
     struct sockaddr_in          sin;
@@ -421,7 +422,9 @@
 
     r->main = r;
 
-    r->start_time = ngx_time();
+    tp = ngx_timeofday();
+    r->start_sec = tp->sec;
+    r->start_msec = tp->msec;
 
     r->method = NGX_HTTP_UNKNOWN;
 

src/http/ngx_http_request.h

diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index 414efd7..a380ac0 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -342,7 +342,8 @@
     ngx_http_request_body_t          *request_body;
 
     time_t                            lingering_time;
-    time_t                            start_time;
+    time_t                            start_sec;
+    ngx_msec_t                        start_msec;
 
     ngx_uint_t                        method;
     ngx_uint_t                        http_version;

src/http/ngx_http_write_filter_module.c

diff --git a/src/http/ngx_http_write_filter_module.c b/src/http/ngx_http_write_filter_module.c
index b25d07e..2015c43 100644
--- a/src/http/ngx_http_write_filter_module.c
+++ b/src/http/ngx_http_write_filter_module.c
@@ -210,7 +210,7 @@
     }
 
     if (r->limit_rate) {
-        to_send = r->limit_rate * (ngx_time() - r->start_time + 1) - c->sent;
+        to_send = r->limit_rate * (ngx_time() - r->start_sec + 1) - c->sent;
 
         if (to_send <= 0) {
             c->write->delayed = 1;