private void bulkLoadAndAssert(final boolean overwriteExisting,
                                   final int commitInterval) {
        // two different ref stream definitions
        List<RefStreamDefinition> refStreamDefinitions = Arrays.asList(
                buildUniqueRefStreamDefinition(),
                buildUniqueRefStreamDefinition());

        bulkLoadAndAssert(refStreamDefinitions, overwriteExisting, commitInterval);
    }
Make entryCount very big for manual performance testing or profiling
stroom-pipeline/src/test/java/stroom/pipeline/refdata/store/onheapstore/TestRefDataOnHeapStore.java