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Ionut Balosin🚀 Call for Contributors – <a href="https://mastodon.social/tags/JVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#JVM</a> <a href="https://mastodon.social/tags/Performance" class="mention hashtag" rel="nofollow noopener" target="_blank">#Performance</a> <a href="https://mastodon.social/tags/Benchmarks" class="mention hashtag" rel="nofollow noopener" target="_blank">#Benchmarks</a>If you're interested in contributing to the <a href="https://mastodon.social/tags/JVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#JVM</a> <a href="https://mastodon.social/tags/Performance" class="mention hashtag" rel="nofollow noopener" target="_blank">#Performance</a> <a href="https://mastodon.social/tags/Benchmarks" class="mention hashtag" rel="nofollow noopener" target="_blank">#Benchmarks</a> project - an initiative that gained significant traction in the <a href="https://mastodon.social/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#Java</a> community through our recent <a href="https://mastodon.social/tags/JDK17" class="mention hashtag" rel="nofollow noopener" target="_blank">#JDK17</a> and <a href="https://mastodon.social/tags/JDK21" class="mention hashtag" rel="nofollow noopener" target="_blank">#JDK21</a> analyses - check out the repo:🔗 <a href="https://github.com/ionutbalosin/jvm-performance-benchmarks" rel="nofollow noopener" translate="no" target="_blank">https://github.com/ionutbalosin/jvm-performance-benchmarks</a>🧵 DM me or open a PR to get started<a href="https://mastodon.social/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#Java</a> <a href="https://mastodon.social/tags/JVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#JVM</a> <a href="https://mastodon.social/tags/OpenJDK" class="mention hashtag" rel="nofollow noopener" target="_blank">#OpenJDK</a> <a href="https://mastodon.social/tags/GraalVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#GraalVM</a> <a href="https://mastodon.social/tags/JMH" class="mention hashtag" rel="nofollow noopener" target="_blank">#JMH</a> <a href="https://mastodon.social/tags/Performance" class="mention hashtag" rel="nofollow noopener" target="_blank">#Performance</a> <a href="https://mastodon.social/tags/OpenSource" class="mention hashtag" rel="nofollow noopener" target="_blank">#OpenSource</a>

Retro/AlvarAvui toca aprendre a fer <a href="https://mastodont.cat/tags/benchmarks" class="mention hashtag" rel="nofollow noopener" target="_blank">#benchmarks</a> amb <a href="https://mastodont.cat/tags/jmh" class="mention hashtag" rel="nofollow noopener" target="_blank">#jmh</a> <a href="https://mastodont.cat/tags/java" class="mention hashtag" rel="nofollow noopener" target="_blank">#java</a> <a href="https://mastodont.cat/tags/programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#programming</a>

Chris NewlandSimple O(n^2) vs mildly optimised solution in <a href="https://mastodon.social/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#Java</a> for <a href="https://mastodon.social/tags/AdventOfCode" class="mention hashtag" rel="nofollow noopener" target="_blank">#AdventOfCode</a> day 1 part 2 using <a href="https://mastodon.social/tags/jmh" class="mention hashtag" rel="nofollow noopener" target="_blank">#jmh</a>.Day 2 part 2 was surprisingly tricky to find the edge cases and required unit tests to track them all down.Code: <a href="https://github.com/chriswhocodes/aoc2024" rel="nofollow noopener" translate="no" target="_blank">https://github.com/chriswhocodes/aoc2024</a> Benchmark: <a href="https://github.com/chriswhocodes/aoc2024-benchmark" rel="nofollow noopener" translate="no" target="_blank">https://github.com/chriswhocodes/aoc2024-benchmark</a>

René SchwietzkeThanks for attending my deep dive session, and thanks for all feedback and questions. <a href="https://foojay.social/tags/Devoxx" class="mention hashtag" rel="nofollow noopener" target="_blank">#Devoxx</a> <a href="https://foojay.social/tags/JMH" class="mention hashtag" rel="nofollow noopener" target="_blank">#JMH</a>Slides <a href="https://t.ly/POQnP" rel="nofollow noopener" translate="no" target="_blank">https://t.ly/POQnP</a> and if you want to get really crazy with running some examples, you can clone the repository from <a href="https://github.com/Xceptance/jmh-training" rel="nofollow noopener" translate="no" target="_blank">https://github.com/Xceptance/jmh-training</a>And here is the full recording: <a href="https://youtu.be/u5XC2nriqpQ?si=SB_05NXM3oqJ7x6f" rel="nofollow noopener" translate="no" target="_blank">https://youtu.be/u5XC2nriqpQ?si=SB_05NXM3oqJ7x6f</a>Feedback appreciated!

René SchwietzkeHope to see you tomorrow! For all <a href="https://foojay.social/tags/1brc" class="mention hashtag" rel="nofollow noopener" target="_blank">#1brc</a> fans, we will lay the basic foundation for that exercise, without elaborating on tuning, by seeing the magic of the JVM and hardware... because it will hit us when benchmarking too naively. @Devoxx <a href="https://foojay.social/tags/jmh" class="mention hashtag" rel="nofollow noopener" target="_blank">#jmh</a> <a href="https://foojay.social/tags/1brc" class="mention hashtag" rel="nofollow noopener" target="_blank">#1brc</a>

Mirko StockerHow many joules does it take to execute a single Java method?In my latest Growing Green Software blog post, I explore this question and show how we can use JoularJX to break down the energy consumption of a Java program to the method level. <a href="https://medium.com/growing-green-software/measuring-java-energy-consumption-987654efdabb" rel="nofollow noopener" translate="no" target="_blank">https://medium.com/growing-green-software/measuring-java-energy-consumption-987654efdabb</a><a href="https://mastodon.social/tags/GreenSoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#GreenSoftware</a> <a href="https://mastodon.social/tags/EnergyMeasurement" class="mention hashtag" rel="nofollow noopener" target="_blank">#EnergyMeasurement</a> <a href="https://mastodon.social/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#Java</a> <a href="https://mastodon.social/tags/JMH" class="mention hashtag" rel="nofollow noopener" target="_blank">#JMH</a> <a href="https://mastodon.social/tags/JoularJX" class="mention hashtag" rel="nofollow noopener" target="_blank">#JoularJX</a>

BaselOne"My code is faster than yours... let me prove it to you!" Challenge accepted, François Martin! 🚨In this <a href="https://mastodon.social/tags/BaselOne24" class="mention hashtag" rel="nofollow noopener" target="_blank">#BaselOne24</a> talk, you will learn about benchmarking with <a href="https://mastodon.social/tags/JMH" class="mention hashtag" rel="nofollow noopener" target="_blank">#JMH</a>. JMH is a <a href="https://mastodon.social/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#Java</a> harness for building, running, and analyzing nano/micro/milli/macro benchmarks written in Java and other languages targeting the hashtag#JVM. Get your tickets at <a href="https://lnkd.in/ggjmzerN" rel="nofollow noopener" translate="no" target="_blank">https://lnkd.in/ggjmzerN</a>.<a href="https://mastodon.social/tags/communityrocks" class="mention hashtag" rel="nofollow noopener" target="_blank">#communityrocks</a> <a href="https://mastodon.social/tags/softwaredevelopment" class="mention hashtag" rel="nofollow noopener" target="_blank">#softwaredevelopment</a> <a href="https://mastodon.social/tags/softwareengineering" class="mention hashtag" rel="nofollow noopener" target="_blank">#softwareengineering</a> <a href="https://mastodon.social/tags/BaselOne" class="mention hashtag" rel="nofollow noopener" target="_blank">#BaselOne</a>

Dr. Marc SchreiberToday I made the first release of <a href="https://fosstodon.org/tags/SonarQube" class="mention hashtag" rel="nofollow noopener" target="_blank">#SonarQube</a> <a href="https://fosstodon.org/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#Java</a> Energy Impact <a href="https://fosstodon.org/tags/Plugin" class="mention hashtag" rel="nofollow noopener" target="_blank">#Plugin</a>. See <a href="https://github.com/aixigo/sonarqube-java-energyimpact-plugin/blob/main/CHANGELOG.md" rel="nofollow noopener" translate="no" target="_blank">https://github.com/aixigo/sonarqube-java-energyimpact-plugin/blob/main/CHANGELOG.md</a>Based on scientific research the usage of <a href="https://fosstodon.org/tags/ArrayList" class="mention hashtag" rel="nofollow noopener" target="_blank">#ArrayList</a> and <a href="https://fosstodon.org/tags/HashMap" class="mention hashtag" rel="nofollow noopener" target="_blank">#HashMap</a> is discouraged due to higher <a href="https://fosstodon.org/tags/EnergyConsumption" class="mention hashtag" rel="nofollow noopener" target="_blank">#EnergyConsumption</a> leading to higher <a href="https://fosstodon.org/tags/CarbonEmission" class="mention hashtag" rel="nofollow noopener" target="_blank">#CarbonEmission</a>|s. 5% <a href="https://fosstodon.org/tags/EnergySaving" class="mention hashtag" rel="nofollow noopener" target="_blank">#EnergySaving</a>|s can be achieved.Now I'm searching for ways to measure energy consumption in <a href="https://fosstodon.org/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#Java</a> Microbenchmark Harness (<a href="https://fosstodon.org/tags/JMH" class="mention hashtag" rel="nofollow noopener" target="_blank">#JMH</a>) to start working on the higher hanging fruits/recommendations of the paper: <a href="https://doi.org/10.1007/s10664-021-09950-y" rel="nofollow noopener" translate="no" target="_blank">https://doi.org/10.1007/s10664-021-09950-y</a><a href="https://fosstodon.org/tags/GreenCoding" class="mention hashtag" rel="nofollow noopener" target="_blank">#GreenCoding</a>

René SchwietzkeThe curious C2 case of different training data and sticking to it forever: <a href="https://github.com/rschwietzke/jmh-C2-compile" rel="nofollow noopener" target="_blank">https://github.com/rschwietzke/jmh-C2-compile</a>I would appreciate a review, any feedback, and possibly an idea, if this is a bug, a feature, or just one of the "bad luck" cases.Appreciated! <a href="https://foojay.social/tags/java" class="mention hashtag" rel="nofollow noopener" target="_blank">#java</a> <a href="https://foojay.social/tags/jvm" class="mention hashtag" rel="nofollow noopener" target="_blank">#jvm</a> <a href="https://foojay.social/tags/jit" class="mention hashtag" rel="nofollow noopener" target="_blank">#jit</a> <a href="https://foojay.social/tags/jmh" class="mention hashtag" rel="nofollow noopener" target="_blank">#jmh</a>

René SchwietzkeHere are the slides of my first <a href="https://foojay.social/tags/DevoxxPL" class="mention hashtag" rel="nofollow noopener" target="_blank">#DevoxxPL</a> talk. I had to rush a little because I wanted to tell you so much in so little time. Thanks for attending. I hope you enjoyed it and you can take something home.See you tomorrow for "Parallel Programming is Hard". 1430/230pm in Room 2!<a href="https://training.xceptance.com/java/500-the-art-of-microbenchmarking-devoxx-pl-2023.html" rel="nofollow noopener" target="_blank">https://training.xceptance.com/java/500-the-art-of-microbenchmarking-devoxx-pl-2023.html</a><a href="https://foojay.social/tags/java" class="mention hashtag" rel="nofollow noopener" target="_blank">#java</a> <a href="https://foojay.social/tags/jvm" class="mention hashtag" rel="nofollow noopener" target="_blank">#jvm</a> <a href="https://foojay.social/tags/jmh" class="mention hashtag" rel="nofollow noopener" target="_blank">#jmh</a>

René SchwietzkeJoin me today at 1430/230pm in Room 4B for "Microbenchmarking, the art of realizing one is wrong" <a href="https://foojay.social/tags/DevoxxPL" class="mention hashtag" rel="nofollow noopener" target="_blank">#DevoxxPL</a> I promise code, funny numbers, some <a href="https://foojay.social/tags/JVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#JVM</a> insides and insights, and car analogies.<a href="https://foojay.social/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#Java</a> <a href="https://foojay.social/tags/JMH" class="mention hashtag" rel="nofollow noopener" target="_blank">#JMH</a>

Markus EiseleHow to write JMH microbenchmarks for asynchronous functions (tips and tricks). <a href="https://mail.openjdk.org/pipermail/loom-dev/2023-May/005509.html" rel="nofollow noopener" target="_blank">https://mail.openjdk.org/pipermail/loom-dev/2023-May/005509.html</a> By Sergey Kuksenko <a href="https://mastodon.online/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#Java</a> <a href="https://mastodon.online/tags/jmh" class="mention hashtag" rel="nofollow noopener" target="_blank">#jmh</a>

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