Total of 6 tests timed out in the run.

TEST_OPTS_JAVA_OPTIONS=-XX:+UseParallelGC -XX:+UseCompactObjectHeaders

First test involved was:

java/lang/StringBuilder/HugeCapacity.java

It passed but then jtreg timed out. The timeout handler was unable to generate any info as the process was exiting.

----------System.out:(6/435)----------
[0.016s][info][gc] Using Parallel
Timeout signalled after 480 seconds
[828.336s][info][gc] GC(0) Pause Young (Allocation Failure) 3235M->2048M(7935M) 645.357ms
[829.258s][info][gc] GC(1) Pause Young (Allocation Failure) 6211M->5120M(7935M) 199.734ms
[829.698s][info][gc] GC(2) Pause Full (Allocation Failure) 6144M->2321M(7936M) 317.390ms
[830.248s][info][gc] GC(3) Pause Young (Allocation Failure) 4414M->4369M(7282M) 299.345ms
----------System.err:(1/16)----------
STATUS:Passed.

Next was java/lang/StringBuffer/ECoreIndexOf.java#id0. It also passed but timned out.

Same for java/lang/StringBuffer/HugeCapacity.java.

Then we had a number of tests that passed.

The we get to java/lang/StringBuilder/CompactStringBuilder.java

----------System.out:(21/1423)----------
Timeout signalled after 480 seconds
[859.546s][error][attach] pipe write error (232)
test CompactStringBuilder.testCompactStringBuilderForDuplicatedMixedA1(): success [803ms]
test CompactStringBuilder.testCompactStringBuilderForDuplicatedMixedA2(): success [106ms]
test CompactStringBuilder.testCompactStringBuilderForLatinA(): success [314ms]
test CompactStringBuilder.testCompactStringBuilderForMixedA1(): success [181ms]
test CompactStringBuilder.testCompactStringBuilderForMixedA2(): success [61ms]
test CompactStringBuilder.testCompactStringBuilderForNonLatinA(): success [294ms]
test CompactStringBuilder.testCompactStringForMaybeLatin1(): success [122ms]
test CompactStringBuilder.testCompactStringForSupplementaryCodePoint(): success [901ms]
test CompactStringBuilder.testCompactStringForSupplementaryCodePointMixed1(): success [210ms]
test CompactStringBuilder.testCompactStringForSupplementaryCodePointMixed2(): success [143ms]
test CompactStringBuilder.testCompactStringForSupplementaryCodePointMixed3(): success [110ms]
test CompactStringBuilder.testCompactStringForSupplementaryCodePointMixed4(): success [114ms]
test CompactStringBuilder.testGrowingCapacityReplace(): success [1278ms]

===============================================
java/lang/StringBuilder/CompactStringBuilder.java
Total tests run: 13, Passes: 13, Failures: 0, Skips: 0
===============================================

----------System.err:(1/16)----------
STATUS:Passed.

So the pipe error suggests jtreg is having issues.

Then more tests pass, then we get to: java/lang/String/UnicodeCasingTest.java

which again passed but also timed out.

In some cases the timeout handler was able to generate stack dumps but looking at the final test there was nothing obviously wrong.