In my opinion adding kryo in the benchmark is somewhat disingenuous as it does not require a message schema definition while MyraCodec/SBE/FlatBuffers do.

The only thing that says is schemeless and is zero copy is Apache Fory which is missing from the benchmark.

I had added Kryo since that seems to be the fastest Java serialization library which does not use sun.misc.unsafe.

Thanks for sharing Apache Fory! Will try to add that to the benchmark as well.