The following test timed out in the JDK26 CI:

com/sun/jdi/SimulResumerTest.java

Here's a snippet from the log file:

#section:driver
----------messages:(11/343)----------
command: driver SimulResumerTest
reason: User specified action: run driver SimulResumerTest
started: Mon Oct 06 09:03:44 UTC 2025
Mode: agentvm
Agent id: 29
Process id: 1840
Timeout signalled after 120 seconds
Timeout information:
--- Timeout information end.
finished: Mon Oct 06 09:11:34 UTC 2025
elapsed time (seconds): 469.884
----------configuration:(12/1082)*----------

<snip>

----------System.err:(6/176)----------
[0ms] run args: [SimulResumerTarg]
[126878ms] VMDisconnectedException
[126878ms] SimulResumerTest: passed; bkpts = 20000, iters = 1086

JavaTest Message: Test complete.

----------System.out:(2746/77112)*----------
vmOpts: '-Xmx768m -XX:MaxRAMPercentage=4.16667 -Dtest.boot.jdk=c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk\\24\\36\\bundles\\windows-x64\\jdk-24_windows-x64_bin.zip\\jdk-24 -Djava.io.tmpdir=c:\\sb\\prod\\1759740766\\testoutput\\test-support\\jtreg_open_test_jdk_jdk_jdi\\tmp -XX:+CreateCoredumpOnCrash -ea -esa'
javaOpts: '-XX:+UseParallelGC -XX:+UseNUMA'
JVM version:26-ea
JDI version: 26.0
JVM description: Java Debug Interface (Reference Implementation) version 26.0
Java Debug Wire Protocol (Reference Implementation) version 26.0
JVM Debug Interface version 26.0
JVM version 26-ea (Java HotSpot(TM) 64-Bit Server VM, mixed mode, sharing)
Howdy!
thr1 = instance of java.lang.Thread(name='Thread 1', id=86)
thr2 = instance of java.lang.Thread(name='Thread 2', id=88)
kind = ownedMonitors()
kind = ownedMonitorsAndFrames()
kind = ownedMonitors()
kind = ownedMonitors()
kind = ownedMonitorsAndFrames()
kind = ownedMonitors()
kind = ownedMonitors()
kind = ownedMonitorsAndFrames()
kind = currentContendedMonitor()
kind = frames()
kind = frames(0, size - 1)
kind = frameCount()
kind = name()
kind = status()
kind = ownedMonitors()
kind = ownedMonitors()
kind = ownedMonitorsAndFrames()

<snip>

kind = ownedMonitorsAndFrames()
kind = ownedMonitors()
kind = ownedMonitors()
kind = ownedMonitorsAndFrames()
kind = ownedMonitors()
result: Error. "driver" action timed out with a timeout of 120 seconds on agent 29


According to this output in stderr:

---------System.err:(6/176)----------
[0ms] run args: [SimulResumerTarg]
[126878ms] VMDisconnectedException
[126878ms] SimulResumerTest: passed; bkpts = 20000, iters = 1086

JavaTest Message: Test complete.

The test has finished, but the agent still timed out:

> result: Error. "driver" action timed out with a timeout of 120 seconds on agent 29