Strange interaction with hyperthreading on Intel hybrid CPU

Alan Bateman Alan.Bateman at
Tue Oct 10 13:56:37 UTC 2023

On 10/10/2023 12:52, Michael van Acken wrote:
> Is there a way to change the number of carrier threads? Something like 
> "this line in this .java file" would suffice for me to make images and 
> compare the effect.
There's a table of system properties in the java.lang.Thread javadoc 
with the configuration, you probably want 
-Djdk.virtualThreadScheduler.maxPoolSize=<N> for your testing. It's hard 
to know what to take from your mail as virtual thread are only going to 
help if most of the time is spent blocking at the queue, the compilation 
and class generation tasks seem very compute bound.

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