[xep-support] multi threaded access issue ?

[David Tolpin]

> Any ideas as to why this is happening ?
>

When you run multiple threads on the same machine with the same memory  
limit, you get much more memory use. Garbage collector in JVM is 'stop the  
world' by default. This means that with increased memory churning you  
spend more time in all the threads waiting for the garbage collector to  
complete (which has low priority, by the way).

You need also four times more memory and/or ParallelGC enable to benefit  
 from multiple threads.

David Tolpin
 
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