flow-ctrl: improve log line

diff --git a/src/core/or/congestion_control_flow.c b/src/core/or/congestion_control_flow.c
index aef7aa628274d1a6141d99ea0d2165d4f3a39a29..0ddcf0dfd0a6a754e00d647ce85871bda6e7effc 100644 (file)
--- a/src/core/or/congestion_control_flow.c
+++ b/src/core/or/congestion_control_flow.c
@@ -496,8 +496,11 @@ flow_control_decide_xoff(edge_connection_t *stream)
         stream->xoff_grace_period_start_usec = now;
       } else if (now > stream->xoff_grace_period_start_usec + XOFF_GRACE_PERIOD_USEC) {
         /* If we've exceeded our XOFF grace period, we need to send an XOFF. */
-        log_info(LD_EDGE, "Sending XOFF: %"TOR_PRIuSZ" %d",
-                   total_buffered, buffer_limit_xoff);
+        log_info(LD_EDGE,
+                 "Sending XOFF: total-buffered=%" TOR_PRIuSZ
+                 " xoff-limit=%d grace-period-dur=%" TOR_PRIuSZ "usec",
+                 total_buffered, buffer_limit_xoff,
+                 now - stream->xoff_grace_period_start_usec);
         tor_trace(TR_SUBSYS(cc), TR_EV(flow_decide_xoff_sending), stream);
 
         cc_stats_flow_xoff_outbuf_ma =