Github user franz1981 commented on the issue:
https://github.com/apache/activemq-artemis/pull/1753
I've changed the last few bits and these are some results:
```
THIS PR:
DIRECT:
Throughput writeUTF = 2352 ops/ms
Throughput readUTF = 2123 ops/ms
HEAP:
Throughput writeUTF = 2531 ops/ms
Throughput readUTF = 2257 ops/ms
ORIGINAL
DIRECT;
Throughput writeUTF = 1824 ops/ms
Throughput readUTF = 1494 ops/ms
HEAP:
Throughput writeUTF = 1828 ops/ms
Throughput readUTF = 1727 ops/ms
```---
