How accurate is Thread.sleep?

by

Thread.sleep() is inaccurate. How inaccurate depends on the underlying operating system and its timers and schedulers. I’ve experienced that garbage collection going on in parallel can lead to excessive sleep.

When doing “real time” simulations you have to correct your main loop for the inaccuracies of sleep. This can be done by calculating the expected time of wake-up and comparing that to the actual time of wake-up and correcting for the difference in the next loop.

If you need better performance, have a look at the Java Real-Time System specification. I haven’t used it myself so I can’t provide further details.

More Related Contents:

  1. How do I time a method’s execution in Java?
  2. What are the reasons why Map.get(Object key) is not (fully) generic
  3. How do I get a platform-dependent new line character?
  4. Why is Java’s SimpleDateFormat not thread-safe? [duplicate]
  5. How to set a background picture in JPanel
  6. Java time-based map/cache with expiring keys [closed]
  7. How to initialize List object in Java?
  8. Why are Java Streams once-off?
  9. Interface naming in Java [closed]
  10. Java Animate JLabel
  11. JFormattedTextField : input time duration value
  12. Create new object from a string in Java
  13. Generate random date of birth
  14. Can a Collector’s combiner function ever be used on sequential streams?
  15. Keystore type: which one to use?
  16. Best Practice to Use HttpClient in Multithreaded Environment
  17. JavaFX Nested Controllers (FXML )
  18. How do I get the max and min values from a set of numbers entered?
  19. Constantly checking if a bullet has touched a node
  20. Password Verification with PBKDF2 in Java
  21. Generic JSF entity converter [duplicate]
  22. Java – How to hook into the Copy and Paste menu on the Mac OS
  23. Unable to use Intellij with a generated sources folder
  24. Does Java recognize infinite loops?
  25. Spring properties that depend on other properties
  26. Font Awesome with Swing
  27. Getting difference between two dates Android
  28. How to get current class name including package name in Java?
  29. java file input with rewind()/reset() capability
  30. Replace a class within the Java class library with a custom version

Leave a Comment