diff --git a/RELEASE.md b/RELEASE.md
index 11720b6..ba4da8e 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -7,6 +7,7 @@
 - libcamera: do not expose some options that should not be made configurable
 - http: add `/control` to provide simple JS interface to live edit camera settings
 - http: change `/option` to accept `device=`, `key=`, and `value=`
+- device: show stddev estimates to measure frame pacing
 
 ## Variants
 
diff --git a/device/buffer_list.h b/device/buffer_list.h
index 22fe9d7..26dc950 100644
--- a/device/buffer_list.h
+++ b/device/buffer_list.h
@@ -24,6 +24,11 @@ typedef struct buffer_format_s {
 
 typedef struct buffer_stats_s {
   int frames, dropped;
+
+  int frames_since_reset;
+  uint64_t max_dequeued_us;
+  float avg_dequeued_us;
+  float stddev_dequeued_us;
 } buffer_stats_t;
 
 #define MAX_BUFFER_QUEUE 4
diff --git a/device/buffer_queue.c b/device/buffer_queue.c
index e3f4337..06f0a4b 100644
--- a/device/buffer_queue.c
+++ b/device/buffer_queue.c
@@ -171,6 +171,10 @@ buffer_t *buffer_list_dequeue(buffer_list_t *buf_list)
     goto error;
   }
 
+  uint64_t dequeued_us = 0;
+  if (buf_list->last_dequeued_us > 0)
+    dequeued_us = get_monotonic_time_us(NULL, NULL) - buf_list->last_dequeued_us;
+
   buf_list->last_dequeued_us = get_monotonic_time_us(NULL, NULL);
   buf_list->last_capture_time_us = buf_list->last_dequeued_us - buf->captured_time_us;
   buf_list->last_in_queue_time_us = buf_list->last_dequeued_us - buf->enqueue_time_us;
@@ -203,6 +207,18 @@ buffer_t *buffer_list_dequeue(buffer_list_t *buf_list)
   }
 
   buf_list->stats.frames++;
+
+  float old_average = buf_list->stats.avg_dequeued_us;
+  float old_sum = buf_list->stats.avg_dequeued_us * buf_list->stats.frames_since_reset;
+  float old_stddev_sum = buf_list->stats.stddev_dequeued_us * buf_list->stats.stddev_dequeued_us * buf_list->stats.frames_since_reset;
+
+  buf_list->stats.frames_since_reset++;
+  if (dequeued_us > buf_list->stats.max_dequeued_us)
+    buf_list->stats.max_dequeued_us = dequeued_us;
+  buf_list->stats.avg_dequeued_us = (float)(old_sum + dequeued_us) / buf_list->stats.frames_since_reset;
+  buf_list->stats.stddev_dequeued_us = sqrt(
+    ( old_stddev_sum + (dequeued_us - old_average) * (dequeued_us - buf_list->stats.avg_dequeued_us)
+    ) / buf_list->stats.frames_since_reset);
   return buf;
 
 error:
diff --git a/device/links.c b/device/links.c
index 511cddf..31f47cd 100644
--- a/device/links.c
+++ b/device/links.c
@@ -425,12 +425,15 @@ static void links_refresh_stats(link_t *all_links, uint64_t *last_refresh_us)
       buffer_stats_t *now = &capture_list->stats;
       buffer_stats_t *prev = &capture_list->stats_last;
 
-      printf(" [%8s %2d FPS/%2d D/%3dms/%3dms/%c/Q%d:O%d:C%d]",
+      printf(" [%8s %2d FPS/%2d D/%3dms/%3dms/Dev%3.fms/%c/Q%d:O%d:C%d]",
         capture_list->dev->name,
         (now->frames - prev->frames) / log_options.stats,
         (now->dropped - prev->dropped) / log_options.stats,
         capture_list->last_capture_time_us > 0 ? capture_list->last_capture_time_us / 1000 : -1,
         capture_list->last_in_queue_time_us > 0 ? capture_list->last_in_queue_time_us / 1000 : -1,
+        // (float)(now->max_dequeued_us / 1000),
+        // (float)(now->avg_dequeued_us / 1000),
+        (float)(now->stddev_dequeued_us / 1000),
         capture_list->streaming ? (capture_list->dev->paused ? 'P' : 'S') : 'X',
         capture_list->dev->output_list ? capture_list->dev->output_list->n_queued_bufs : 0,
         capture_list->dev->output_list ? buffer_list_count_enqueued(capture_list->dev->output_list) : 0,
@@ -446,6 +449,11 @@ static void links_refresh_stats(link_t *all_links, uint64_t *last_refresh_us)
     buffer_list_t *capture_list = all_links[i].capture_list;
     capture_list->stats_last = capture_list->stats;
 
+    capture_list->stats.max_dequeued_us = 0;
+    capture_list->stats.avg_dequeued_us = 0;
+    capture_list->stats.stddev_dequeued_us = 0;
+    capture_list->stats.frames_since_reset = 0;
+
     if (now_us - capture_list->last_dequeued_us > 1000) {
       capture_list->last_capture_time_us = 0;
       capture_list->last_in_queue_time_us = 0;