Question about --lazy-comopilation=false in JDK-8u40-b25

[Kunal Cholera]

Hello Nahsorn dev team,

Is it a good idea to turn off lazy compilation to get faster warmup and better overall performance over long run ? Execution time on our javascript shows that turning off lazy outperforms persistent code cache and optimistic types. See data with column_name “lazy=false” in https://plot.ly/~usckmc/182 [1] .Here is the graph comparing8u40 with and without lazy compilation(lazy=false) https://drive.google.com/file/d/0B5PpdCJ7YycqVlhlSnJfTl9ac00/view . Is that expected ?

>From xhelp we got very little information about what lazy-compilation is doing: --lazy-compilation (do not compile the entire script at once, default: true). Can you provide more insights about what this feature does and what scenarios might benefit from its use?

[1]
Steps to reproduce these performance numbers -
Download this ziphttps://drive.google.com/file/d/0B5PpdCJ7YycqMWlVQ0FsNlozcTA/view?usp=sharing which has the following four files
1. bench.js - the benchmarking script
2. hp.js - the javascript we want to execute on Nashorn
3. hp.json - the data we want to use while executing our script hp.js
4. dust-full.js - library needed to execute hp.js script

run jjs bench.js -scripting --lazy-compilation=false -- 10000

I am using "1.8.0_40-ea" Java(TM) SE Runtime Environment (build 1.8.0_40-ea-b25 on 8 core redhat linux machine ).

Please advise.

Thanks
Kunal Cholera