diff --git a/spa/include/spa/node/io.h b/spa/include/spa/node/io.h
index 166529ac1..20934efd4 100644
--- a/spa/include/spa/node/io.h
+++ b/spa/include/spa/node/io.h
@@ -117,7 +117,7 @@ struct spa_io_clock {
 					  *  is unique per clock and can be used to check if nodes
 					  *  share the same clock. */
 	uint64_t nsec;			/**< time in nanoseconds against monotonic clock */
-	struct spa_fraction rate;	/**< rate for position/duration/delay */
+	struct spa_fraction rate;	/**< rate for position/duration/delay/xrun */
 	uint64_t position;		/**< current position */
 	uint64_t duration;		/**< duration of current cycle */
 	int64_t delay;			/**< delay between position and hardware,
@@ -129,8 +129,8 @@ struct spa_io_clock {
 	uint64_t target_duration;		/**< target duration of next cycle */
 	uint32_t target_seq;			/**< seq counter. must be equal at start and
 						  *  end of read and lower bit must be 0 */
-
-	uint32_t padding[3];
+	uint32_t padding;
+	uint64_t xrun;			/**< estimated accumulated xrun duration */
 };
 
 /* the size of the video in this cycle */
diff --git a/spa/plugins/alsa/alsa-pcm.c b/spa/plugins/alsa/alsa-pcm.c
index fdd40e80c..cddb0b64d 100644
--- a/spa/plugins/alsa/alsa-pcm.c
+++ b/spa/plugins/alsa/alsa-pcm.c
@@ -1931,14 +1931,18 @@ static int alsa_recover(struct state *state, int err)
 
 		delay = SPA_TIMEVAL_TO_USEC(&diff);
 		missing = delay * state->rate / SPA_USEC_PER_SEC;
+		if (missing == 0)
+			missing = state->threshold;
 
 		spa_log_trace(state->log, "%p: xrun of %"PRIu64" usec %"PRIu64,
 				state, delay, missing);
 
+		if (state->clock)
+			state->clock->xrun += missing;
+		state->sample_count += missing;
+
 		spa_node_call_xrun(&state->callbacks,
 				SPA_TIMEVAL_TO_USEC(&trigger), delay, NULL);
-
-		state->sample_count += missing ? missing : state->threshold;
 		break;
 	}
 	case SND_PCM_STATE_SUSPENDED: