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felixge.de
Working at Datadog on Go Profiling, Performance, OpenTelemetry and more. Before: - Manufacturing Observability at Apple - Co-founder at Transloadit - Node.js Core Dev
52 posts 2,092 followers 104 following
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6h of meetings in the calendar today. I think it's about time I go on "vacation" to get some work done.

submitted 17 days ago • 2 comments

Yandex released a new eBPF profiler. If you're into profiling, I highly recommend reading their announcement post. It covers a lot of background knowledge, and also introduces some cool new ideas such as capturing micro coredumps when a process gets killed! medium.com/yandex/yande...

submitted 27 days ago • 2 comments

Datadog is on Bluesky! Follow us to stay up to date on the latest in observability and security, product innovation, Datadog happenings and more.

submitted 31 days ago • 1 comment

I'm honoured to have been added to the PostgreSQL Contributors list, along with Nikolay Samokhvalov! www.postgresql.org/community/co... Thank you to everyone who makes Postgres what it is. I'm chuffed to be recognised as playing a small part in helping such a wonderful project ☺️✌️🐘

submitted 32 days ago • 3 comments

Alibaba, Datadog, and Quesma Join Forces on Go Compile-Time Instrumentation, read the full announcement:

submitted 32 days ago • 1 comment

My daughter has been putting all her stuffed animals “to sleep” by putting towels over their bodies (including the head) for a while. It always felt a little creepy ..., but she has now graduated to wearing medical gloves while doing it. When should I start to get worried? 😂

submitted 32 days ago • 3 comments

Have you ever struggled with debugging memory leaks or OOM kills in Java or Go? My team at @datadoghq.com has recently shipped a guided memory leak workflow that can quickly guide you through the right steps to find and fix the problematic code.

submitted 37 days ago • 1 comment

Today's OTel Night is kicked off by @felixge.de and @kakkoyun.me with OpenTelemetry Profiles!

submitted 44 days ago • 2 comments

Thrilled to share that I’ve joined @datadoghq.com as a Staff Software Engineer on the Language Platform team for @golang.org 🐹 I’m excited to continue my journey in observability and performance engineering, focusing on building tools that make developers’ lives easier.

submitted 51 days ago • 6 comments

My favorite aspect of OSS and sharing knowledge with the community: It all adds up to a virtuous circle. Also: If you enjoy a project with less than ~1000 stars, consider letting the author know. It's a small effort and can easily make someones day.

submitted 51 days ago • 1 comment

Nick Ripley of @datadoghq.bsky.social wrote up something recently on our collaboration to squish bugs surfaced by frame pointer unwinding code in the Go runtime: nsrip.com/posts/clobbe...

submitted 60 days ago • 3 comments

I've finally gotten around to publishing my notes on how I use jj for contributing to Go/working with Gerrit. pratt.im/notes/jj-go-...

submitted 62 days ago • 2 comments

How often do people run into the SetFinalizer footguns in Go? (Accidental cycle, for example.) Would a GODEBUG that does something slow but tells you when you've made a mistake be useful to you? (Maybe even just for tests, to prevent a regression?) Sketch: go-review.googlesource.com/c/go/+/634599

submitted 65 days ago • 4 comments

For the past few days, I've been hacking on a new algorithm for analyzing go runtime traces. It seemed great, but fell apart on real data because it was O(N²) and I struggled to figure out how to optimize it. This morning the solution came to me. Thank you Santa 🎅🏻🎁🎉!!

submitted 66 days ago • 1 comment

Go iterator xmas wish: Always let me do do: for i, x := range iter() {} Right now this only works if iter() returns an iter.Seq2. But sometimes I have an iter.Seq and want a loop counter! The workaround below is rather annoying: var i int for x := range iter() { i++ }

submitted 67 days ago • 3 comments

🔭🐶 Exciting news: @datadoghq.bsky.social has announced our intend on donating our new Go auto-instrumentation framework to @opentelemetry.io.

submitted 70 days ago • 1 comment

I just closed go.dev/issue/54766 as fixed! Please try out the RC! 🇨🇭┳┳

submitted 76 days ago • 2 comments

Our top episode for 2024 on #Spotify was ...🥁 #OpenTelemetry embracing #profiling! @horovits.bsky.social hosted @opentelemetry.io Profiles SIG members @felixge.de and Ryan Perry Check it out on your favorite #podcast app🎧 Or on the recap post 👉 medium.com/p/4a9b407e48... #SpotifyWrapped #podcasts

submitted 75 days ago • 0 comments

Manually instrumenting Go applications for observability has always been a time-consuming challenge. Solutions based on binary patching and eBPF have attempted to solve this, but they often come with undesirable tradeoffs. That’s why we built Orchestrion … 🧵

submitted 84 days ago • 1 comment

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 🙇🏻‍♂️

submitted 92 days ago • 1 comment