If anybody with connections to the V8/Chrome team is reading this, my colleague Attila is trying to find a reviewer for a patch to improving profiling. Many thanks in advance for any leads 🙇🏻‍♂️ chromium-review.googlesource.com/c/v8/v8/+/78...

PSA: Green Tea GC in go1.26 is incredible 🚀 This is what we saw for two big Go services. We'll try to gather more data and share it soon.

I just published a proposal for a new RSS profile type for Go. It aims to solve the issue that the heap profile typically shows < 50% of process RSS, which is very confusing. It should also help to quickly identify when memory usage is dominated by cgo. github.com/golang/go/is...

proposal: runtime/pprof: add a rss profile type · Issue #79179 · golang/go

This is a proposal to introduce a new "rss" profile type to runtime/pprof to provide Go users with a holistic breakdown of their program's memory usage. Problem Statement As part of incident respon...

github.com

In exchange for 18 minutes of your time, you can get an elevator pitch about why you should be using pi (instead of claude) and perhaps more importantly, one of the sanest takes on using AI effectively 🔥 www.youtube.com/watch?v=Rjfb...

Building pi in a World of Slop — Mario Zechner

YouTube video by AI Engineer

youtube.com

The OpenTelemetry Profiles Signal is now in Alpha 🚀 This is a big step towards making Continuous Profiling in production available to the whole industry. And given the rise of AI coding, this couldn't come at a better moment in time ... 🧵

People that strip debug symbols are not to be trusted.

I’m headed to KubeCon Amsterdam where I’ll be talking about the otel profiling signal graduating to alpha stability. HMU if you want to chat about otel, go, o11y, profiling or anything else. I’m in town until Thursday night.

.git/info/exclude is one of my favorite git features, but I'm always surprised when I talk to people who never heard about it. It basically allows you to add stuff to .gitignore without modifying the file. Great for ad-hoc ignoring some files created during debugging.

I used vim exclusively for 10+ years. But when LLMs came up, I ditched it for VS Code and later Cursor as it was the path of least resistance. But given the advancements of claude et al, it's time to go back. neovim + tmux + jjui - let's go.

Redact sensitive data from Java Flight Recorder and JVM crash logs with jfr-redact, a tool for safely sharing profiling and error files: mostlynerdless.de/blog/2026/02...

Redacting Sensitive Data from Java Flight Recorder Files - Mostly nerdless

Redact sensitive data from Java Flight Recorder and JVM crash logs with jfr-redact, a tool for safely sharing profiling and error files.

mostlynerdless.de

I'll be speaking at the Datadog User Group Berlin today. Expect live demos of our Continuous Profiler product, root causing an incident caused by an LLM-assisted refactoring. www.meetup.com/datadog-berl...

Observe event-driven systems | Zendesk Customer Success Story | Cont. Profiling, Thu, Jan 29, 2026, 6:00 PM | Meetup

I'm excited to announce another meetup! If you're interested in give a talk, feel free to reach out to me at marcel.drechsler@andsafe.de \-\-\- All talks will be **presen

meetup.com

My GopherCon talk was just posted!

GopherCon 2025: Porting the TypeScript Compiler to Go for a 10x Speedup V2 - Jake Bailey

YouTube video by Gopher Academy

youtu.be

Just spend like 20 minutes debugging why claude code notifications don't work. Turns out they fire after a hard coded 60 second timeout. I don't get it, I thought I'm supposed to feed this thing with input as fast as possible? github.com/anthropics/c...

[FEATURE] Configurable timeout for idle_prompt notification hook · Issue #13922 · anthropics/claude-code

Preflight Checklist I have searched existing requests and this feature hasn't been requested yet This is a single feature request (not multiple features) Problem Statement The idle_prompt notificat...

github.com

My colleague Sanjay Ghemawat & I have done a fair bit of performance tuning of various pieces of code. We wrote an internal Performance Hints document ~2 years ago as a way of identifying some general principles & we've recently published a version of it externally. Doc: abseil.io/fast/hints.h...

Profiling Request Latency with Critical Path Analysis, @felixge.de @ GopherCon 2025 www.youtube.com/watch?v=BayZ...

GopherCon 2025: Profiling Request Latency with Critical Path Analysis - Felix Geisendörfer

YouTube video by Gopher Academy

youtube.com

The talk @florianl.bsky.social and I submitted has been accepted at KubeCon 2026 in Amsterdam. 🎉 Small wrinkle: The talk says that the profiling signal is in alpha … which is not true yet. Fear driven development will continue until reality and talk description are aligned!

A small productivity hack I use every day. gist.github.com/felixge/ce96...

Accepted! Go 1.26 will introduce per-state goroutine metrics: running, waiting, in syscalls, etc. Developers can use them to catch problems early without needing full traces. antonz.org/accepted/gor...

Go proposal: Goroutine metrics

Export goroutine-related metrics from the Go runtime.

antonz.org

Small contribution just before the Go 1.26 freeze: go.dev/cl/610815 removes the hard-coded 100ms sleep from the CPU profiler for most platforms. This will make it more efficient and unblock deeper call stacks. As a bonus, uncovered and fixed an 8 year old bug in the profiler go.dev/cl/722940 :)

My talk from GopherCon 2025 about Green Tea is up on YouTube! www.youtube.com/watch?v=gPJk...

GopherCon 2025 - Advancing Go Garbage Collection with Green Tea - Michael Knyszek

YouTube video by Gopher Academy

youtube.com

"It has, with generative code, become harder and harder to strive towards the lions because the models produce code that is, quite literally, mid" - beautiful post by @vickiboykis.com newsletter.vickiboykis.com/archive/i-wa...

I want to see the claw

I respect quality software and the people who write it. And, I’ve invested years of my life in working on becoming one of these people (even if the journey...

newsletter.vickiboykis.com

I see a future in #jj-vcs: steveklabnik.com/writing/i-se...

jj v0.34 is out, including Gerrit upload support! github.com/jj-vcs/jj/re...

Release v0.34.0 · jj-vcs/jj

About jj is a Git-compatible version control system that is both simple and powerful. See the installation instructions to get started. Release highlights Support for uploading changes to Gerrit ...

github.com

Watching "stupid jj tricks" from JJ con 2025 live right now. Tune in: www.youtube.com/watch?v=WWNh...

JJ Conference 2025

YouTube video by GerritForge TV

youtube.com

I need to start a critical path analysis art gallery soon. The kind of stuff goroutines get up to behind the scenes can be truly fascinating.

I'm starting to get better at leveraging AI agents for the kind of low-level stuff I'm doing sometimes. Example: Asked opus to explain some runtime internals, and then turn the analysis into a nice human-readable markdown output that I can use to explain a code change I'm making to a colleague.

Hi folks, it’s survey time! We’d love to learn more about how you use Go and what could be improved. Share your feedback via our annual developer survey at google.qualtrics.com/jfe/form/SV_.... It should take 10 - 20 minutes to complete, and will be open through September 30. Thank you! #golang

Profile.

My usual workflow is firing off the same query in ChatGPT 5 and Gemini 2.5 Pro these days. Typically they align, but one answer is better than the other. But it turns out no amount of AI can solve the "too many chefs in the kitchen" problem 😂.

This is a fantastic week. A lot of stuff I've been hoping to accomplish, and wasn't sure if I could, seems to finally be coming together. And to top it off, Spotify just pulled an incredible "Discover Weekly" playlist out of the hat. Good times 🎶