Yeah I'm just using the JDK's default in the nightly benchmarks. Should I override back to the parallel collector?
Mike McCandless http://blog.mikemccandless.com On Thu, Apr 25, 2019 at 5:44 PM Uwe Schindler <u...@thetaphi.de> wrote: > 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 >
