It shows benchmarks for SPECjvm2008 on Windows/Linux, confirming that 32-bit can outperform 64-bit for CPU-bound tasks due to reduced memory traffic.
Proceedings of the 8th ACM/SPEC on International Conference on Performance Engineering (ICPE '17) – but a more directly applicable, freely available technical report is: 32 bits java
Authors: S. M. Mostafa, S. M. R. Islam (2014), International Journal of Computer Applications (Free on researchgate.net) S. M. R. Islam (2014)
By: Dr. Heinz Kabutz, JavaSpecialists.eu (2018) 32 bits java