How do I know what overhead to specify in the Set Statistics Overhead dialog?
As described in Q7.11, you can specify tracing overhead to be applied to times shown in the Trace Events details. But what number should you put in there? The answer depends on a number of factors, including your hardware and OS speed, whether you’re dumping parameters, and whether it’s Java or native code. A good guess is the minimum time you see in the entire tree for that kind of call, or if that seems to big, you can instrument some do-nothing function and see what its time is. This value would be the overhead for every call, and you can use that.