Hi, I am not sure how Mike's benchmarks are setup and if he chooses a specific garbage collector.
Java 8 defaults to ParallelGC, Java 11 defaults to G1, which may slow down up to 10% as it is not optimized for throughput. So to compare you gave to be specific in your GC choices. Uwe Am April 25, 2019 5:57:16 PM UTC schrieb Nicholas Knize <nkn...@gmail.com>: >Earlier this week I noticed a significant across the board performance >regression on the nightly geo benchmarks ><https://home.apache.org/~mikemccand/geobench.html>. It appears this >regression can also be seen on other lucene benchmarks ><https://home.apache.org/~mikemccand/lucenebench/SloppyPhrase.html> and >appears to correspond to the upgrade to JDK 11. > >Any thoughts? > >Nicholas Knize, Ph.D., GISP >Geospatial Software Guy | Elasticsearch >Apache Lucene PMC Member and Committer >nkn...@apache.org -- Uwe Schindler Achterdiek 19, 28357 Bremen https://www.thetaphi.de
