diff --git a/master.c b/master.c
index b4fdde75..661135e3 100644
--- a/master.c
+++ b/master.c
@@ -8,6 +8,10 @@ void get_linux_tcp_info(int fd) {
         socklen_t tis = sizeof(struct tcp_info) ;
 
         if (!getsockopt(fd, IPPROTO_TCP, TCP_INFO, &ti, &tis)) {
+		// a check for older linux kernels
+		if (!ti.tcpi_sacked) {
+			return 0;
+		}
                 if (ti.tcpi_unacked >= ti.tcpi_sacked) {
                         uwsgi_log_verbose("*** uWSGI listen queue of socket %d full !!! (%d/%d) ***\n", fd, ti.tcpi_unacked, ti.tcpi_sacked);
                 }
diff --git a/uwsgi.c b/uwsgi.c
index 229e5dd4..d90c4db9 100644
--- a/uwsgi.c
+++ b/uwsgi.c
@@ -149,6 +149,7 @@ static struct option long_options[] = {
 		{"log-4xx", no_argument, 0, LONG_ARGS_LOG_4xx},
 		{"log-5xx", no_argument, 0, LONG_ARGS_LOG_5xx},
 		{"log-big", required_argument, 0, LONG_ARGS_LOG_BIG},
+		{"log-sendfile", required_argument, 0, LONG_ARGS_LOG_SENDFILE},
 		{"chdir", required_argument, 0, LONG_ARGS_CHDIR},
 		{"chdir2", required_argument, 0, LONG_ARGS_CHDIR2},
 		{"mount", required_argument, 0, LONG_ARGS_MOUNT},
@@ -2322,6 +2323,9 @@ void manage_opt(int i, char *optarg) {
 	case LONG_ARGS_LOG_BIG:
 		uwsgi.shared->options[UWSGI_OPTION_LOG_BIG] = atoi(optarg);
 		break;
+	case LONG_ARGS_LOG_SENDFILE:
+		uwsgi.shared->options[UWSGI_OPTION_LOG_SENDFILE] = 1;
+		break;
 	case LONG_ARGS_MOUNT:
 		if (uwsgi.mounts_cnt < MAX_MOUNTPOINTS) {
 			uwsgi.mounts[uwsgi.mounts_cnt] = optarg;
@@ -2513,6 +2517,7 @@ void manage_opt(int i, char *optarg) {
 \t--log-4xx\t\t\tlog requests with status code 4xx\n\
 \t--log-5xx\t\t\tlog requests with status code 5xx\n\
 \t--log-big <n>\t\t\tlog requests bigger than <n> bytes\n\
+\t--log-sendfile\t\t\tlog sendfile() requests\n\
 \t--ignore-script-name\t\tdisable uWSGI management of SCRIPT_NAME\n\
 \t--no-default-app\t\tdo not fallback unknown SCRIPT_NAME requests\n\
 \t--ini <inifile>\t\t\tpath of ini config file\n\
diff --git a/uwsgi.h b/uwsgi.h
index 3036f3e3..149b9901 100644
--- a/uwsgi.h
+++ b/uwsgi.h
@@ -211,6 +211,7 @@ PyAPI_FUNC(PyObject *) PyMarshal_ReadObjectFromString(char *, Py_ssize_t);
 #define LONG_ARGS_LOG_BIG		17052
 #define LONG_ARGS_MOUNT			17053
 #define LONG_ARGS_THREADS		17054
+#define LONG_ARGS_LOG_SENDFILE		17055
 
 
 
@@ -269,6 +270,7 @@ PyAPI_FUNC(PyObject *) PyMarshal_ReadObjectFromString(char *, Py_ssize_t);
 #define UWSGI_OPTION_LOG_4xx		11
 #define UWSGI_OPTION_LOG_5xx		12
 #define UWSGI_OPTION_LOG_BIG		13
+#define UWSGI_OPTION_LOG_SENDFILE	14
 
 #define UWSGI_MODIFIER_ADMIN_REQUEST		10
 #define UWSGI_MODIFIER_SPOOL_REQUEST		17
diff --git a/wsgi_handlers.c b/wsgi_handlers.c
index 5d673277..ed15bd20 100644
--- a/wsgi_handlers.c
+++ b/wsgi_handlers.c
@@ -406,5 +406,8 @@ void uwsgi_after_request_wsgi(struct wsgi_request *wsgi_req) {
 		if (uwsgi.shared->options[UWSGI_OPTION_LOG_BIG]) {
 			if (wsgi_req->response_size >= uwsgi.shared->options[UWSGI_OPTION_LOG_BIG]) { log_request(wsgi_req); return; }
 		}
+		if (uwsgi.shared->options[UWSGI_OPTION_LOG_SENDFILE]) {
+			if (wsgi_req->sendfile_fd > -1 && wsgi_req->sendfile_obj == wsgi_req->async_result) { log_request(wsgi_req); return; }
+		}
 	}
 }