Cache performance slow in a JTA transaction with many cache operations

When running Infinispan in a JTA transaction the performance of cache operations decreases as the number of operations increases in the transaction. If adding to the cache, adding 50k items is much faster when done 1k items per transaction than all 50k in one transaction.

Using JProfiler the bulk of the time was spent in LockingInterceptor.doAfterCall() for the all 50k in one transaction test.