diff --git a/include/haproxy/task-t.h b/include/haproxy/task-t.h
index 3df4bf689..34d9a4565 100644
--- a/include/haproxy/task-t.h
+++ b/include/haproxy/task-t.h
@@ -127,6 +127,9 @@ struct task {
 struct tasklet {
 	TASK_COMMON;			/* must be at the beginning! */
 	struct list list;
+#ifdef DEBUG_TASK
+	uint64_t call_date;		/* date of the last tasklet wakeup or call */
+#endif
 	int tid;                        /* TID of the tasklet owner, <0 if local */
 };
 
diff --git a/include/haproxy/task.h b/include/haproxy/task.h
index ce6418260..c717420f7 100644
--- a/include/haproxy/task.h
+++ b/include/haproxy/task.h
@@ -368,6 +368,8 @@ static inline void _tasklet_wakeup_on(struct tasklet *tl, int thr, const char *f
 	tl->debug.caller_idx = !tl->debug.caller_idx;
 	tl->debug.caller_file[tl->debug.caller_idx] = file;
 	tl->debug.caller_line[tl->debug.caller_idx] = line;
+	if (task_profiling_mask & tid_bit)
+		tl->call_date = now_mono_time();
 #endif
 	__tasklet_wakeup_on(tl, thr);
 }
diff --git a/src/task.c b/src/task.c
index 9249068ec..e33120fcf 100644
--- a/src/task.c
+++ b/src/task.c
@@ -505,6 +505,9 @@ unsigned int run_tasks_from_lists(unsigned int budgets[])
 
 				profile_entry = sched_activity_entry(sched_activity, t->process);
 				before = now_mono_time();
+#ifdef DEBUG_TASK
+				HA_ATOMIC_ADD(&profile_entry->lat_time, before - ((struct tasklet *)t)->call_date);
+#endif
 				process(t, ctx, state);
 				HA_ATOMIC_ADD(&profile_entry->calls, 1);
 				HA_ATOMIC_ADD(&profile_entry->cpu_time, now_mono_time() - before);