fix probing duration

Author: win-t

src/rt/monitor.rs

@@ -48,7 +48,7 @@ pub fn spawn_thread() {
 
                 loop {
                     running.lock().unwrap().set(false);
-                    thread::sleep(Duration::from_millis(PROBING_DURATION_MS));
+                    thread::sleep(Duration::from_millis(PROBING_DURATION_MS * 2));
                     if !running.lock().unwrap().get() {
                         eprintln!(
                             "WARNING: You are blocking the runtime, please use spawn_blocking"