https://wiki.openjdk.java.net/display/CodeTools/jcstress

"jcstress is an experimental harness and a suite of tests to aid the research in the correctness of concurrency support in the JVM, class libraries, and hardware."

jcstress tests have been proven to be useful for hotspot testing, hence it makes sense to have a jtreg wrapper to run jcstress tests so it will be easy for hotspot people to run these tests regularly.