This bug is specific to Solaris SPARC so it is not a dup of:

    JDK-8205526 tests timeout intermittently in "agentvm" mode

During my analysis of jdk/jdk CI test failures, I'm seeing a
number of Solaris SPARC test timeouts that appear to be
caused by some failure in JTREG's "agentvm" mode.

This bug is intended as a gathering place for sightings of
test time outs on Solaris SPARC in "agentvm" mode only!
In particular, the JTREG test needs to fail with an error
message that looks like this:

test result: Error. Agent communication error: java.net.SocketTimeoutException: Read timed out; check console log for any additional details

and a timeout of about 3 minutes:

elapsed time (seconds): 180.008

Please DO NOT add sightings to this bug unless they are
Solaris SPARC hangs related to "agentvm" mode and they
timeout in about 3 minutes.