@hirt

Java nerd heavily into production time profiling and diagnostics. Loves playing the piano. Pastafari.

 Küssnacht
hirt.se
Joined September 2009
  • Tweets3.5K
  • Following295
  • Followers2.5K
243Media
There really should be an official JVM Appreciation Day, where we give our JVMs some tea and a massage. – at Zurich, Switzerland
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Using @graalvm, JavaFX and a Clanker to Build a (Pretty) Cross Platform Desktop App: hirt.se/blog/?p=1606
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How I got my inbox down from 30k+ emails to 5 flagged ones: hirt.se/blog/?p=1596 YMMV.
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I am finally at zero unhandled emails in my (non-work) inboxes: github.com/thegreystone/mcp-… Claude + @graalvm FTW! ;)

GitHub - thegreystone/mcp-email: Fast MCP server for handling email (IMAP and SMTP). Can for...

Fast MCP server for handling email (IMAP and SMTP). Can for example be used with Claude Code and Claude App. - thegreystone/mcp-email

github.com
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The Virtual @OpenJDK Serviceability Meetup 2025 will be the 17th of December: mail.openjdk.org/pipermail/s…
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WOW 🤩 The OpenJDK Vector API improvements to the JRuby JSON lib now improve encoding perf by better than 2X on real-world benchmarks, all without writing a line of assembly code! The potential of JRuby to accelerate Ruby apps grows with every JVM release. buff.ly/yKE2nfq
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Marcus Hirt retweeted
Java
@java4 Aug 2025
JavaOne 2025 was such a hit that we just have to run it back. 😎 Save the date for our next #JavaOne event, coming to you March 17-19, 2026! social.ora.cl/6011fdkbH
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Marcus Hirt retweeted
Java
@java31 Jul 2025
Full tournament results 👇
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Oooh! @OpenJDK @javamissionctrl won the tools category! xitter.cf/java/status/1948020286… JMC 10 will have a lot of exciting features - including support for the new (proper) CPU profiler in openjdk.org/jeps/509. On behalf of the project - thanks for all the votes! :)
Java
@java23 Jul 2025
We’re ready to kick off the quarter-finals of the Best of Java Feature Face-Off! The matchups are getting intense as we inch closer to the finals. Place your votes now to see which features advance to the semi-finals! #30YearsOfJava
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Curious about open source? Join us in Switzerland on the 22nd of November for Hack-Commit-Push - a full day of hands-on OSS fun, no prior experience needed! Great chance to contribute, learn & connect. switzerland2025.hack-commit-… @Hackergarten @OpenJDK @javamissionctrl
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The @OpenJDK Mission Control 9.1.1 source release is now tagged. A small, but oh-so important, release for @javamissionctrl users on Windows: hirt.se/blog/?p=1566 github.com/openjdk/jmc/relea…
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The Eclipse Mission Control binary distribution of JMC 9.1.1 is available here: adoptium.net/en-GB/jmc/

Adoptium

Eclipse Adoptium provides prebuilt OpenJDK binaries from a fully open source set of build scripts and infrastructure.

adoptium.net
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Hej @kstefanj! Regarding what we talked about at @JavaOne, this might help: github.com/openjdk/jmc/pull/…

8370: HDR Histogram View by thegreystone · Pull Request #636 · openjdk/jmc

Adds a Histogram view that will work on any selected events (that have durations). Useful for looking at distributions of, for example, GC or Lock events, or for any events that have durations in t...

github.com
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The @OpenJDK @javamissionctrl 9.1.0 source release is now available: github.com/openjdk/jmc/relea… Here is what's new: hirt.se/blog/?p=1561

Release 9.1.0-ga · openjdk/jmc

GA source release for JMC 9.1.0

github.com
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Congrats to Hendrik Schick on his first @OpenJDK @javamissionctrl contribution: github.com/openjdk/jmc/pull/… Also thanks to the excellent @hackcommitpush initiative that enabled it: switzerland2024.hack-commit-…

8296: No Java process should ever be PID 1 by ky0n · Pull Request #613 · openjdk/jmc

Happy to get feedback Progress Commit message must refer to an issue Change must be properly reviewed (1 review required, with at least 1 Committer) Issue JMC-8296: No Java process should ev...

github.com
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Would you like to contribute to an open source project, but don't know how to get started? Or would you just like to join in on a fun day of coding? On Saturday I'll be at Hack-Commit-Push Switzerland: lnkd.in/dEdxnnkp Hope to see you there!

LinkedIn

This link will take you to a page that’s not on LinkedIn

lnkd.in
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Replying to @felixge
Datadog is indeed fantastic! Prometheus and grafana are fine, but compared to datadog it feels like banging rocks together 😄
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Datadog has a reputation to provide the best, but not the cheapest products. However, one aspect that is easy to forgot is that good observability empowers engineers to significantly optimize cloud cost. Learn how dogfooding our own products is saving us huge amounts of money.
Datadog, Inc.
@datadoghq1 Oct 2024
Over a two-month period, our engineers recorded 15 performance optimizations that saved us $17.5 million in annual cloud spend. Learn how we dogfood different products and build our FinOps culture at Datadog: dtdg.co/cost-savings
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Virtual @OpenJDK Serviceability Meetup 2024 will be end of October: mail.openjdk.org/pipermail/s…
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Friendly reminder that tomorrow is the last day to sign up (and to propose topics)!
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Marcus Hirt retweeted
Java
@java3 Jun 2024
What's new in JDK Mission Control 9? Take a look at some of the key changes with @BillyKorando. social.ora.cl/6010jUvBE
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The new timeline view in Datadog Continuous Profiler gives you a detailed chronological visualization of multithreaded activity, helping you pinpoint causal factors behind non-parallelization and other runtime performance issues more easily. Read more: dtdg.co/timeline-view

Diagnose runtime and code inefficiencies in production by using Continuous Profiler’s timeline view...

Learn how you can use Continuous Profiler’s new timeline view to investigate the causes behind application performance issues.

datadoghq.com
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