Hello @Sebastien_Arod,
Since you posted your feedback I believe things improved a lot especially on the Kotlin part.
You could expect now to scan your 600K LOCs in less than 15min.
Still, we just released a new version of the Java analyzer which accept a property sonar.java.experimental.batchModeSizeInKB
activating an experimental feature keeping more data in memory which has a significant impact on the speed of analysis for Java projects (between 10 to 90% increase according to our tests).
Would you be OK to test this property and share a before / after comparison?
You can start with sonar.java.experimental.batchModeSizeInKB=1024
and increase it gradually.
Thanks
Alex