The tier1 jtreg test runtime/Nestmates/protectionDomain/TestDifferentProtectionDomains.java times out if executed in a client VM, in both release and debug builds.
The test tries to compile a method using the WhiteBox with optimization level 4, which is not available in client VMs. The WhiteBox only prints out a warning on stderr, and the call to enqueueMethodForCompilation succeeds. After that, the test case goes into an endless loop to wait for the compilation to finish, which never happens, because the method is not enqueued for compilation.