[emmericp]

We wrote some experimental network drivers in high-level languages a few years ago and Java performed better than expected. Yeah, that's a very special and somewhat odd use case, but it was fun :)

We've got some graphs [0] comparing throughput and long-tail latency for the various Java GCs available in OpenJDK 12. Shenandoah's worst case pause time was ~45µs which is the same as disabling the GC (Epsilon GC) which is pretty impressive. Overall performance did suffer under Shenandoah a little bit back then, though. However, I've heard that this improved recently.

[0] https://github.com/ixy-languages/ixy-languages/blob/master/J...

[jacquesm]

Java can be amazingly performant. One particular example is a video compressor handling many concurrent streams, recompressing them on the fly and shipping them out again saturating a gigabit link.