With Silk Performer TrueLog technology, you can find errors that usually occur to only a subset of users when your application is under a heavy load. For most applications, this is the type of load that will most likely be experienced once the application is deployed in the real world. Typical errors include incorrect text on a Web page, incorrectly computed and displayed values, or application-related messages, such as Servlet Error or Server Too Busy errors. These are not system-level errors and are displayed on Web pages with HTTP 200 status codes.