OpenJ9 to run YaCy

seeing YaCy badly managing its growing and consuming more and more RAM while crawling1 I’m curious if anybody here tested OpenJ9 which is a JVM tech developed in IBM and which although not fast as Hotspot its advantage (maybe) is that it consumes way less RAM while running.

So before going to test that to save time it’s better to ask experts here.


Very short investigation. Using J9 now and number looks:

JDK 8 + HotSpot (OpenJDK provided by Debian 11): 23GB rsize / 83GB vsize
JDK 8 + OpenJ9 (provided by adoptopenjdk): 16GB rsize / 79GB vsize

will keep that running and write if anything changes.