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 :)

“The Green Tea Garbage Collector” by Michael Knyszek and Austin Clements — https://go.dev/blog/greenteagc #golang

blog.cloudflare.com/how-we-found... Fun post! Reminded me of a similar bug I wrote about in nsrip.com/posts/oneins...

Go, SQL, and DTrace: a marriage made in heaven? New blog post! gaultier.github.io/blog/observe... #golang #dtrace #sql

Ever wondered if it’s possible to use DTrace on a Go program? Turns out it’s super easy, barely an inconvenience! gaultier.github.io/blog/an_opti... #golang #dtrace #optimization #debugging

Thanks @commaok.xyz for hosting @michael.express and I to talk about a fun bug in Go’s new Green Tea GC and the tools we used to investigate. sigpod.dev/6

A few ways to build Go programs with a modified compiler/runtime/standard library: nsrip.com/posts/patchr... Overlays in particular are pretty cool IMO

Didn't end up using this, but I thought I might need a quick way for somebody to check if one of their Go dependencies calls a specific function. This one-liner does it: go list -deps -f '{{$dir := .Dir}}{{range .GoFiles}}{{$dir}}/{{.}} {{end}}' | xargs rg foo.Bar

Got a trial Financial Times subscription, and I was reading an article when I noticed my browser was crawling, using like 160% CPU. Ran out the (awesome) Firefox profiler, turns out the page is doing hundreds of HTTP requests per second to update this little chart... yikes!

New blog post! Debug Go core dumps with delve: export byte slices Not all bugs can easily be reproduced. Sometimes, all you have is a core dump. I had trouble figuring out how to save byte slice contents from memory into a file for further analysis with delve… michael.stapelberg.ch/posts/2024-1...

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...