Runtime: quarkus

Persistance: infinispan

Prop: kogito.persistence.optimistic.lock=true

Process (each sequntial task is executing async by jobs service):

We use a simple load test for Jmeter to send POST requests, the frequency of which gradually increases (over 5 minutes) up to 10 tps.

An example of a load script for Jmeter (for Jmeter to work correctly, you will need to install the plugin Concurrency Thread Group - https://jmeter-plugins.org/wiki/ConcurrencyThreadGroup/):

kogito_service_step_async.jmx

^{HeapDums and JFR-files:}

heapdump.zip

heapdump_2.zip

heapdump_3.zip

^{kogito-bpmn-async.jfr}

^{kogito-bpmn-async_1.jfr}
Request example: curl -X POST -H 'Content-Type:application/json' -H 'Accept:application/json' -d '{"username" : "test"}' http://localhost:8080/sequential

Screen memory leak: