diff --git a/logcat/event.logtags b/logcat/event.logtags
index 9ab8504..eee08c6 100644
--- a/logcat/event.logtags
+++ b/logcat/event.logtags
@@ -149,6 +149,24 @@
 60002 view_build_drawing_cache (View created drawing cache|1|5)
 60003 view_use_drawing_cache (View drawn using bitmap cache|1|5)
 
+# graphics timestamp
+60100 sf_app_dequeue_before (buffer|1),(identity|1),(time|2)
+60101 sf_app_dequeue_after (buffer|1),(identity|1),(time|2)
+60102 sf_app_lock_before (buffer|1),(identity|1),(time|2)
+60103 sf_app_lock_after (buffer|1),(identity|1),(time|2)
+60104 sf_app_queue (buffer|1),(identity|1),(time|2)
+60105 sf_repaint (buffer|1),(time|2)
+60106 sf_composition_complete (buffer|1),(time|2)
+60107 sf_unlock_clients (buffer|1),(time|2)
+60108 sf_swapbuffers (buffer|1),(time|2)
+60109 sf_repaint_done (buffer|1),(time|2)
+60110 sf_fb_post_before (buffer|1),(time|2)
+60111 sf_fb_post_after (buffer|1),(time|2)
+60112 sf_fb_dequeue_before (buffer|1),(time|2)
+60113 sf_fb_dequeue_after (buffer|1),(time|2)
+60114 sf_fb_lock_before (buffer|1),(time|2)
+60115 sf_fb_lock_after (buffer|1),(time|2)
+
 # 0 for screen off, 1 for screen on, 2 for key-guard done
 70000 screen_toggled (screen_state|1|5)