Please try 3.0.6+, we have tuned the performance a lot.

Cheers,
Daniel Sun
On 2020/10/16 18:58:28, Stephen Mallette <spmalle...@gmail.com> wrote: 
> Hello,
> 
> I happened to be testing some issues related to this pull request I
> submitted the other day:
> 
> https://github.com/apache/groovy/pull/1405
> 
> In testing between groovy 2.5.x and 3.x I've noticed a considerable
> performance difference when pasting long multi-lined scripts. 2.5.x is
> quite quick to accept the input whereas 3.x seems to slow more and more as
> additional lines are consumed. While I did more complex tests trying to get
> to the bottom of the problem, it's fairly easy to recreate with a simple
> addition script:
> 
> 1 + 10 +
> 1 + 10 +
> 1 + 10 +
> 1 + 10 +
> 1 + 10 +
> ... repeated a bunch of times and then ended with
> 1
> 
> copy that out of your text editor and just paste it into both versions of
> groovsh and see the difference. I've found 500 lines demonstrates it well
> but you could probably get away with less and still see the difference of
> evaluation at play.
> 
> I tried to do some profiling to try to isolate the problem myself, but
> things got a little too deep into antlr4 for me and I got lost. Does anyone
> have any ideas as to what might be different for 3.x?
> 

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