On Fri, 19 Aug 2022 18:14:16 GMT, Aleksey Shipilev <sh...@openjdk.org> wrote:

>> We have a few reports that existing Weak* VarHandle tests are still flaky, 
>> for example on large AArch64 machines or small RISC-V machines.
>> 
>> The flakiness is intrinsic to the nature of Weak* operations under tests, 
>> that can spuriously fail. The last attempt to fix these was 
>> [JDK-8155739](https://bugs.openjdk.org/browse/JDK-8155739). We need to 
>> strengthen these a bit more.
>> 
>> The actual values depend on the successful testing on known-failing 
>> platforms. I ballparked bumping the attempts 5x and introducing the delay 
>> would help without exploding test time in worst cases.
>
> Aleksey Shipilev has updated the pull request with a new target base due to a 
> merge or a rebase. The pull request now contains six commits:
> 
>  - Rework timeouts
>  - Merge branch 'master' into JDK-8292407-varhandle-weak-resilient
>  - Merge branch 'master' into JDK-8292407-varhandle-weak-resilient
>  - Update copyrights
>  - Also do Unsafe tests
>  - Fix

Yes, so I have reworked this to please more machines. I have clean run on RPi 4 
(AArch64), and semi-clean run on HiFive Unmatched board (there are still some 
timeouts, but no weak failures). I believe the 
`VarHandleTestMethodHandleAccess` are slow themselves, and pairing them with a 
very slow board would run into problems. I'll look into speeding up 
`VarHandles` tests even more in separate PR.

If anyone is interested how this PR behaves on their platforms, feel free to 
test it! Thanks.

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

PR: https://git.openjdk.org/jdk/pull/9889

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