The invention relates to an apparatus for providing event data, generated by a JVM local to the apparatus, to a profiling agent on a remote system as requested by that agent. A request is received at the apparatus, via a network interface, from the profiling agent for certain event data. This request is forwarded via the JVMPI to the JVM and the requested data is transmitted to the apparatus, as and when generated by the JVM. (The event data is also transmitted via the JVMPI). The event data is then transmitted to the profiling agent via the network interface.