Virtual threads created more platform threads

Alan Bateman alan.bateman at oracle.com
Wed Jul 2 09:18:16 UTC 2025



On 02/07/2025 09:27, Andrew Haley wrote:
> On 02/07/2025 05:15, Peter Eastham wrote:
>> As Java 21 is still the current LTS, it isn't completely unreasonable to
>> forward concerns to the mailing list.
>
> Sure, we'e happy to talk about it, but as far as this group is 
> concerned the issue has been resolved.

Right, and as a reminder: the changes were to the lightweight locking 
mode only (not legacy) and that mode only became the default in JDK 22. 
There is also a prerequisite spec change to JVMTI GetObjectMonitorUsage 
that happened in JDK 23. It also seems pointless given that JDK 24 is 
already released and JDK 25 is very close.

-Alan


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