Products Web Shows Optimizing Dart Applications Use the Dart VM's builtin Observatory tool to analyze and fix performances issues in Dart applications. Peer into a running VM and get real-time feedback on memory and CPU usage. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated February 9, 2017.