JEWEL: Design and Implementation of a Distributed Measurement System

The distributed measurement system JEWEL, developed within project RelaX, is described. JEWEL consists of a flexible toolkit for low-interference online performance measurement integrated with a powerful adaptable graphical presentation facility and a generic interactive experiment control system. JEWEL supports a large set of different system models as well as a wide variety of interfaces to the observed system. Two examples are presented in order to demonstrate its flexibility. >