zip location - https://drive.google.com/file/d/0B5PpdCJ7YycqMWlVQ0FsNlozcTA/view?usp=sharing
________________________________________ From: nashorn-dev [[email protected]] on behalf of Kunal Cholera [[email protected]] Sent: Tuesday, March 10, 2015 6:42 PM To: [email protected] Subject: Question about --lazy-comopilation=false in JDK-8u40-b25 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 zip https://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
