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website/_posts/2019-05-06-renaissance-0-9-0.md

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We welcome any comments and contributions.
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Happy benchmarking!
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website/_posts/2019-07-03-renaissance-0-10-0.md

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and/or fix bugs. For instance, [this OpenJ9 bug](https://github.com/eclipse/openj9/issues/5726)
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running Apache Spark has been spotted thanks to the Renaissance suite.
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We address special thanks to :
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We address special thanks to:
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- [tkrodriguez](https://github.com/tkrodriguez) from Oracle for the in-depth analysis of the `finagle-chirper` bug
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- [vkostyukov](https://github.com/vkostyukov) from Twitter, for his feedback on the Finagle benchmarks
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- [MBaesken](https://github.com/MBaesken) and the SAP Machine team for compatibility testing on less common infrastructures
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---
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layout: mainpost
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projectname: Renaissance Suite
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title: "Renaissance 0.11 Released"
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author: Petr Tuma
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---
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A new release of the Renaissance benchmark suite includes several changes to the workloads:
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- `movie-lens` bug fix, where part of the setup was moved out of the core benchmark iteration,
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- `log-regression` bug fix, where input features are cached to avoid parsing the input during each benchmark iteration,
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- `neo4j-analytics` improvement that adds indices and uses placeholder for queries (contributed by Michael Hunger from Neo4J), and
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- `dotty` fix for Windows compatibility.
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The Renaissance harness now forces a garbage collection run before each iteration.
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This changes especially the behavior of Spark based workloads, which would otherwise
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retain weakly referenced objects until Spark controlled cleanup once every 30 minutes.
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The garbage collection forced by the harness can be disabled with the `--no-forced-gc` flag.
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The harness also includes two plugins,
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`jmx-timers` for collecting the JIT compilation times, and
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`ubench-agent` for collecting the values of arbitrary hardware performance counters.
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The JSON result format now also includes OS and system metadata,
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which help capture the benchmark execution conditions across experiments.
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We also note that [Renaissance helped tune](https://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2019-December/036332.html) the OpenJDK HotSpot inlining settings.
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Special thanks go to:
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- [Michael Hunger](https://github.com/jexp) from Neo4J for his contribution on the `neo4j-analytics` benchmark,
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- [Guillaumes Martres](https://github.com/smarter) from EPFL for his input on fixing the `dotty` benchmark for Windows, and
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- [Tom Rodriguez](https://github.com/tkrodriguez) from Oracle Labs for spotting a bug in `log-regression`.

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