The following test has been timing out with slowdebug bits during
my stress testing runs:

java/lang/reflect/IllegalArgumentsTest.java

For several of the sightings, the test PASSed while the timeout handler
is running which might indicate that a slightly longer timeout value will
help the situation.

Here's the sightings from my stress testing notes:

# jdk-20+8_1_linux - observed in jdk-20+8 testing on 2022.07.28 on
# linux-x64 in slowdebug config:
# - timeout at 1525.234 PASSED while timeout handler was running
# jdk-20+20_1_macosx-aarch64 - observed in jdk-20+20 testing on 2022.10.20 on
# macosx-aarch64 in slowdebug config:
# - timeout at 1615.671
# jdk-20+20_2_macosx-aarch64 - observed in jdk-20+20 testing on 2022.10.21 on
# macosx-aarch64 in slowdebug config:
# - timeout at 1634.416
# jdk-20+20_3_macosx-aarch64 - observed in jdk-20+20 testing on 2022.10.22 on
# macosx-aarch64 in slowdebug config:
# - timeout at 1658.501
# jdk-20+26_1_macosx-aarch64 - observed in jdk-20+26 testing on 2022.12.01 on
# macosx-aarch64 in slowdebug config:
# - timeout at 1614.38
# jdk-20+26_2_macosx-aarch64 - observed in jdk-20+26 testing on 2022.12.02 on
# macosx-aarch64 in slowdebug config:
# - timeout at 1821.214
# - This run PASSed while the timeout handler was running.
# jdk-20+27_1_macosx-aarch64 - observed in jdk-20+27 testing on 2022.12.09 on
# macosx-aarch64 in slowdebug config:
# - timeout at 1593.926
# jdk-20+27_2_macosx-aarch64 - observed in jdk-20+27 testing on 2022.12.10 on
# macosx-aarch64 in slowdebug config:
# - timeout at 1748.29
# - This run PASSed while the timeout handler was running.
# jdk-20+27_3_macosx-aarch64 - observed in jdk-20+27 testing on 2022.12.11 on
# macosx-aarch64 in slowdebug config:
# - timeout at 1787.431
# - This run PASSed while the timeout handler was running.