Java nerd heavily into production time profiling and diagnostics. Loves playing the piano. Pastafari.
Joined September 2009
- Tweets 3,512
- Following 295
- Followers 2,511
- Likes 8,050
243 Photos and videos
Pinned Tweet
24 Jun 2016
There really should be an official JVM Appreciation Day, where we give our JVMs some tea and a massage.
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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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Apr 14
How I got my inbox down from 30k emails to 5 flagged ones:
hirt.se/blog/?p=1596
YMMV.
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Mar 14
I am finally at zero unhandled emails in my (non-work) inboxes: github.com/thegreystone/mcp-…
Claude @graalvm FTW! ;)
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14 Nov 2025
The Virtual @OpenJDK Serviceability Meetup 2025 will be the 17th of December:
mail.openjdk.org/pipermail/s…
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Marcus Hirt retweeted
11 Aug 2025
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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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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24 Jul 2025
Oooh! @OpenJDK @javamissionctrl won the tools category!
x.com/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! :)
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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22 Jul 2025
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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11 Jul 2025
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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16 Jul 2025
The Eclipse Mission Control binary distribution of JMC 9.1.1 is available here:
adoptium.net/en-GB/jmc/
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4 Apr 2025
Hej @kstefanj!
Regarding what we talked about at @JavaOne, this might help:
github.com/openjdk/jmc/pull/…
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12 Feb 2025
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
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11 Dec 2024
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-…
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21 Nov 2024
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!
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Marcus Hirt retweeted
3 Oct 2024
Datadog is indeed fantastic! Prometheus and grafana are fine, but compared to datadog it feels like banging rocks together 😄
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Marcus Hirt retweeted
3 Oct 2024
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.
1 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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2 Jul 2024
Virtual @OpenJDK Serviceability Meetup 2024 will be end of October:
mail.openjdk.org/pipermail/s…
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2 Oct 2024
Friendly reminder that tomorrow is the last day to sign up (and to propose topics)!
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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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Marcus Hirt retweeted
21 Jun 2024
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
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