runtime: Add comment on `.wait()`
@@ -778,7 +778,7 @@ impl RuntimeHostTrait for RuntimeHost {
// How much time the result spent in the channel,
// waiting in the tokio threadpool queue. Anything
- // different from 0 is an issue here.
+ // larger than 0 is bad here. The `.wait()` is instant.
"waiting_ms" => send_time.wait().unwrap().elapsed().as_millis(),
);
result
