Ivo Anjo (@KnuX) header
Ivo Anjo (@KnuX) profile picture

Ivo Anjo

@KnuX

https://nitter.cf/t.co/R7xqAMeIUI is where I usually post // Working on building a Ruby profiler @datadoghq

 London, United Kingdom
ivoanjo.me
Joined August 2007
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  • Followers663
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Photo by Ivo Anjo (@KnuX)Photo by Ivo Anjo (@KnuX)Photo by Ivo Anjo (@KnuX)Photo by Ivo Anjo (@KnuX)Photo by Ivo Anjo (@KnuX)Photo by Ivo Anjo (@KnuX)Photo by Ivo Anjo (@KnuX)Photo by Ivo Anjo (@KnuX)Photo by Ivo Anjo (@KnuX)Photo by Ivo Anjo (@KnuX)
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Ivo Anjo@KnuXApr 5
Finally decided to move over to bluesky :D bsky.app/profile/ivoanjo.bsk…
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Benoit Daloze (@eregontp) profile picture
Benoit Daloze@eregontpSep 17
So Matz is saying you can make Campfire (a Rails app) 5 times faster and use a twelvth of the memory by using github.com/rubys/roundhouse + github.com/matz/spinel #EuRuKo @euruko
Image from Benoit Daloze (@eregontp)
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tagomoris (@tagomoris) profile picture
tagomoris@tagomorisSep 17
My talk deck for Euruko 2026 Day 1, introducing Ruby Box "Stacking Boxes" speakerdeck.com/tagomoris/st… #euruko
Stacking Boxes

Stacking Boxes

Euruko 2026

speakerdeck.com
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Ivo Anjo retweeted
Benoit Daloze (@eregontp) profile picture
Benoit Daloze@eregontpSep 17
Here are the slides for my talk "Running Native Extensions and Ruby Code in Parallel Threads" at #EuRuKo 2026: eregon.me/blog/assets/resear…
Image from Benoit Daloze (@eregontp)
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_ko1 (@_ko1) profile picture
_ko1@_ko1Sep 17
Workshop resource tomorrow: [rubyhackchallenge/events/euruko2026.md at master · ko1/rubyhackchallenge](github.com/ko1/rubyhackchall…) #euruko
rubyhackchallenge/events/euruko2026.md at master · ko1/rubyhackchallenge

rubyhackchallenge/events/euruko2026.md at master · ko1/rubyhackchallenge

Contribute to ko1/rubyhackchallenge development by creating an account on GitHub.

github.com
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osyoyu (@osyoyu) profile picture
osyoyu@osyoyuApr 22
Slides for my RubyKaigi 2026 talk "ext/profile, or How to Make Profilers Tell the Truth" #rubykaigi static.osyoyu.com/talks/ruby…
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At @datadoghq we've just published a blog with insights on #ruby performance based on surveying profiler data from thousands of real-world services: datadoghq.com/blog/ruby-perf…
Optimizing Ruby performance: Observations from thousands of real-world services | Datadog

Optimizing Ruby performance: Observations from thousands of real-world services | Datadog

Learn about trends in Ruby development and opportunities for improving performance that many organizations are leaving on the table.

datadoghq.com
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I'll be at #brightonruby today, come say hi and chat about #ruby and performance and profiling and #datadog! (And phones with physical keyboards?)
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I'll be speaking at EuRuKo in September! Really cool to see big Ruby conferences again in Portugal!
Euruko (@euruko) profile pictureEuruko@euruko23 May 2025
🎙️ Meet the first 16 speakers of EuRuKo 2025! We’re thrilled to announce the first names in our lineup: 📣 12 talks and 4 workshops — all selected through our open CFP process.
Image from Euruko (@euruko)
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Finally got to visit the #datadog Tokyo office today! Sakura themed, as expected! – at Tokyo-to, Japan
Image from Ivo Anjo (@KnuX)
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We're thrilled to be back at @rubykaigi as a Ruby Sponsor & host of the Ruby Committers event last night! 🇯🇵 🎉 The Ruby & Rails Infrastructure team at @Shopify have lots to share, including a new JIT compiler, new Ruby LSP APIs for handling DSL, and performance optimizations. Until then, check out what we're working on at railsatscale.com and shopify.engineering. #rubykaigi
Rails at Scale

Rails at Scale

The Ruby and Rails Infrastructure team at Shopify exists to help ensure that Ruby and Rails are 100-year tools that will continue to merit being our toolchain of choice.

railsatscale.com
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As @hachiblog pointed out during the lighting talk, some gems are not (yet) compatible with the fiber scheduler, but this relatively small PR will fix the issue: github.com/grpc/grpc/pull/39…
Use `rb_nogvl(..., RB_NOGVL_OFFLOAD_SAFE)` for compatibility with the fiber scheduler. by ioquatix...

Use `rb_nogvl(..., RB_NOGVL_OFFLOAD_SAFE)` for compatibility with the fiber scheduler. by ioquatix...

This adds RB_NOGVL_OFFLOAD_SAFE to the blocking operations that release the GVL, allowing them to be offloaded in the fiber scheduler, preventing blocking the event loop. More testing is required, ...

github.com
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道後公園展望台にふらっと行ったら @KnuX がいたので、スピーチよかったです、datadog 便利に使ってるよありがとうと伝えて写真を撮ってもらった！ It's good to see you. Thank you!! @KnuX #rubykaigi
Image from Daichi Kamiyama - dak2 (@_dak2_)
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Slides for my #rubykaigi #rubykaigi2025 talk "Performance Bugs and Low-level Ruby Observability APIs" are up on dtdg.co/rubykaigi2025 :)
RubyKaigi 2025 - Performance Bugs and Low-level Ruby Observability APIs

RubyKaigi 2025 - Performance Bugs and Low-level Ruby Observability APIs

Performance Bugs and Low-Level Ruby Observability APIs Ivo Anjo / [email protected] slides dtdg.co/rubykaigi2025 !!!

docs.google.com
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＼ 💎 #rubykaigi 2025 Day2 ／ スタメンブース、引き続きオープンしています！ 当たりはAnkerの充電器、参加賞にはチョコレートをお渡ししています！🍫 引き続きブースでお待ちしています！ #TUNAG #RubyKaigi2025
Image from stmn, inc. Developers (@stmn_eng)
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Have you ever struggled with debugging memory leaks or OOM kills in Java or Go? My team at @datadoghq has recently shipped a guided memory leak workflow that can quickly guide you through the right steps to find and fix the problematic code.
Image from Felix Geisendörfer (@felixge)
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Because @fxn doesn't stop at simple explanations, I went to dig into why this benchmark give the opposite results of what one would expect 🧵
Image from Jean Boussier (@_byroot)
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The fix for this has landed and will be in go1.24 as well as the next minor release for go1.23 🎉. Thanks to the Go team for the fast review as usual 🙇🏻‍♂️
Felix Geisendörfer (@felixge) profile pictureFelix Geisendörfer@felixge26 Nov 2024
I just noticed that go tool trace slightly changed its behavior when it comes to the stack traces it displays in go1.23 compared to go1.22.
Image from Felix Geisendörfer (@felixge)
Image from Felix Geisendörfer (@felixge)
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Good news everyone! 🎉 After two years of R&D, we've finally merged the Bytecode DSL into master! Truffle now generates bytecode interpreters from AST-like specifications for you. ASTs are dead, long live bytecodes! Check it out: github.com/oracle/graal/blob…
Image from Christian Humer (@grashalm_)
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Euruko (@euruko) profile picture
Euruko@euruko29 Nov 2024
🌟 Save the Date! 🌟 EuRuKo 2025: The HeART of Code 📅 September 18-19, 2025 📍 Viana do Castelo, Portugal Join us for the European Ruby Conference in a beautiful coastal city, where innovation meets culture. 👉 Learn more: 2025.euruko.org #EuRuKo2025 #VianaDoCastelo

Euruko 2025 Recap - The Heart of Code

Relive Euruko 2025 - The European Ruby Conference held in Viana do Castelo, Portugal. Watch highlights and revisit this amazing event featuring speakers from around the world.

2025.euruko.org
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