Using JTA with Quarkus: measure and improve memory utilisation and startup time

The JTA TM runs well on application servers where applications typically run for extended periods of time giving plenty of scope for the JIT compiler to optimise the bytecode. Frameworks like Quarkus are particularly well suited to running short duration applications due to the faster startup times and often lower resource footprint but they can miss out on the benefits that JIT provides.

This task is to check whether or not there are opportunites to improve startup time (and resource usage). If/when such changes are identified please raise a linked JIRA so that we can track any specific changes.