Migrating from JDK8 to JDK17/21, sometimes threads start very slowly

[David Holmes]

On 23/08/2025 6:26 pm, xiezhaokun wrote:
> When migrating from JDK8 to JDK17 or JDK21, I encountered slow thread 
> startup, sometimes taking over 30 seconds. I suspect this is caused by 
> the Thread SMR mechanism.
> 
> Related issue links:
> 
> https://bugs.openjdk.org/browse/JDK-8365974 <https://bugs.openjdk.org/ 
> browse/JDK-8365974>

I have closed this as a duplicate of JDK-8307970. We are aware of the 
issue, but at this time do not have a way to remediate.

David Holmes