RFR: JDK-8324930: java/lang/StringBuilder problem with concurrent jtreg runs

[Matthias Baesken]

On Wed, 31 Jan 2024 00:48:35 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> Can we maybe see if we can fix these tests without exclusive-accessing them? I find it surprising that `java/lang/StringBuilder` tests are problematic, but `java/lang/StringBuffer` tests are not. Which tests fail?

It is a bit arbitrary which tests fail.
one day :

java/lang/StringBuilder/StringBufferRepeat.java
java/lang/StringBuilder/CompactStringBuilderSerialization.java
java/lang/StringBuilder/Insert.java

other day:
java/lang/StringBuilder/HugeCapacity.java

next day it might differ a bit.
Maybe it would be sufficient to execute only the HugeCapacity test in a non concurrent way because this one seems to be especially resource hungry, but I am not aware how this would work in jtreg (I can only set whole directories).
Currently we run with this patch and the issues are gone.

Is there a way to balance resource usage in jtreg runs?

-------------

PR Comment: https://git.openjdk.org/jdk/pull/17625#issuecomment-1918595685