｢ Go 1.25 includes a new experimental garbage collector called Green Tea, available by setting GOEXPERIMENT=greenteagc at build time. Many workloads spend around 10% less time in the garbage collector, but some workloads see a reduction of up to 40%! ｣

#golang #programming
go.dev/blog/greente...

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

#golang

I finally got to test out Go 1.25 with GOEXPERIMENT=greenteagc,jsonv2 on the main service I run today and wow! it's very promising. Memory usage at peak is much lower and very stable (flat, no peaks). CPU looks more stable but only slightly lower (because staging).

Tomorrow we go to prod!

#golang

The Green Tea Garbage Collector
https://go.dev/blog/greenteagc

https://news.ycombinator.com/item?id=45749746

I finally got to test out Go 1.25 with GOEXPERIMENT=greenteagc,jsonv2 on the main service I run today and wow! it's very promising. Memory usage at peak is much lower and very stable (flat, no peaks). CPU looks more stable but only slightly lower (because staging).

Tomorrow we go to prod!

#golang

The Green Tea Garbage Collector
L: https://go.dev/blog/greenteagc
C: https://news.ycombinator.com/item?id=45749746
posted on 2025.10.29 at 13:03:51 (c=0, p=4)

<a href="https://go.dev/blog/greenteagc" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky">go.dev/blog/greenteagc
The Green Tea Garbage Collector - The Go Programming Language

dnsperf and greenteagc

goos: linux
goarch: arm64
pkg: codeberg.org/miekg/dns
│ old.txt │ new.txt │
│ sec/op │ sec/op vs base │
DNSPerf-8 2.869µ ± 2% 2.918µ ± 3% ~ (p=0.190 n=10)

old = go 1.25
new = go.1.25 GOEXPERIMENT=greenteagc

The Green Tea Garbage Collector

https://go.dev/blog/greenteagc

New #Golang GC implementation[1] is a wow! I see 20% less memory consumption during high loads with pgwatch[2] tests. It behaves fantastic with a lot of small objects created/freed! #greenteagc

1: github.com/golang/go/is...
2: github.com/cybertec-pos...

The Green Tea Garbage Collector https://go.dev/blog/greenteagc (https://news.ycombinator.com/item?id=45749746)

The Green Tea Garbage Collector https://go.dev/blog/greenteagc (https://news.ycombinator.com/item?id=45749746)

The Green Tea Garbage Collector - The Go Programming Language
https://go.dev/blog/greenteagc

#golang ＞ The Green Tea Garbage Collector
https://go.dev/blog/greenteagc