My experience using loom for a load generator

[Eric Ackermann]

Good evening,

I applied some optimisations to my load generator and tested again.
In the easier scenario of 1000 virtual threads, Loom performs approx. 1 % better than Kotlin. In the harder scenario of 100000 virtual threads, Loom performs 2.5 % better than Kotlin. Both improvements are larger than the standard deviation in my tests (1000 virtual threads: std. dev. 0.92% for Kotlin, 0.37% for Loom, 100000 threads: std. dev. 0.69% for Kotlin, 1.91 for Loom).
I experienced occasional VM crashes when testing both my modified load generator and the version that have I used on Friday, about during every fourth run the JVM died. I was not able to purposefully reproduce these crashes, but I will attach the error log file. I can also provide a crash minidump.

Kind regards,

Eric Ackermann