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Ivo Anjo Profile
Ivo Anjo

@KnuX

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Working on building a Ruby profiler @datadoghq // Previously @awscloud codeguru profiler team // I like ruby, kotlin and poking the jvm 😁

London, United Kingdom
Joined August 2007
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@KnuX
Ivo Anjo
2 years
I've written a new #Ruby blog post investigating why running a mix of network requests (or any kind of IO) and CPU work can result in awful performance. Ruby's thread scheduling can be quite unfair in these cases:.
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@KnuX
Ivo Anjo
1 month
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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@KnuX
Ivo Anjo
2 months
I'll be speaking at EuRuKo in September! Really cool to see big Ruby conferences again in Portugal!.
@euruko
Euruko
2 months
🎙️ 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.
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@KnuX
Ivo Anjo
3 months
Finally got to visit the #datadog Tokyo office today! Sakura themed, as expected!
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@KnuX
Ivo Anjo
3 months
RT @ShopifyEng: We're thrilled to be back at @rubykaigi as a Ruby Sponsor & host of the Ruby Committers event last night! 🇯🇵 🎉. The Ruby &….
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@KnuX
Ivo Anjo
3 months
RT @ioquatix: As @hachiblog pointed out during the lighting talk, some gems are not (yet) compatible with the fiber scheduler, but this rel….
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@KnuX
Ivo Anjo
3 months
RT @_dak2_: 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 .#rubyka….
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@KnuX
Ivo Anjo
3 months
Slides for my #rubykaigi #rubykaigi2025 talk "Performance Bugs and Low-level Ruby Observability APIs" are up on :).
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@KnuX
Ivo Anjo
3 months
RT @stmn_eng: \ 💎 #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 #RubyKaigi….
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@KnuX
Ivo Anjo
6 months
RT @felixge: Have you ever struggled with debugging memory leaks or OOM kills in Java or Go?. My team at @datadoghq has recently shipped a….
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@KnuX
Ivo Anjo
7 months
RT @_byroot: Because @fxn doesn't stop at simple explanations, I went to dig into why this benchmark give the opposite results of what one….
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@KnuX
Ivo Anjo
8 months
RT @felixge: 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 t….
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@KnuX
Ivo Anjo
8 months
RT @grashalm_: Good news everyone! 🎉 After two years of R&D, we've finally merged the Bytecode DSL into master! Truffle now generates bytec….
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@KnuX
Ivo Anjo
8 months
RT @euruko: 🌟 Save the Date! 🌟.EuRuKo 2025: The HeART of Code.📅 September 18-19, 2025.📍 Viana do Castelo, Portugal. Join us for the Europea….
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@KnuX
Ivo Anjo
8 months
RT @_st0012: Let’s give Ruby’s English documentation new homepages! If this is accepted in time, it’ll be applied to the upcoming Ruby 3.4….
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@KnuX
Ivo Anjo
8 months
RT @shreyas: ~Following up~. Since some folks asked, here are a few concrete signs that “optimizing for optics” *might be* happening for ea….
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@KnuX
Ivo Anjo
8 months
RT @mametter: The video of RubyConf Chicago Quine.
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@KnuX
Ivo Anjo
8 months
RT @mametter: I have published the slides for my talk "An Invitation to TRICK: How to write weird Ruby programs" #rubyconf. .
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@KnuX
Ivo Anjo
8 months
RT @cliff_click: Clang and GCC compile slow; portable code-gen; teaching programming; Simple: pre/post dec/increm….
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@KnuX
Ivo Anjo
8 months
RT @vinistock: Today is hackday at #RubyConf! If you'd like to contribute to the Ruby LSP or if you experienced any issues with it, come ov….
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@KnuX
Ivo Anjo
8 months
RT @koichisasada: Koichi Sasada: Ractor on Ruby 3.4,.Oral Presentation at RubyConf 2024,.at Chicago, IL, USA, on Nov 13-15, 2024. https://t….
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