In #golang 1.19 'hash/maphash' package will have Bytes and String funcs for very small inputs, which is much faster than h.Reset+h.Write+h.Sum64 pipeline due to memcopy.

https://github.com/golang/go/commit/9e16cc1541d42cb081d359339e3f45b4b9b2a372

BTW hash algo is wyhash, so it is fast in most cases (see: runtime/hash64.go)

Also, what hash functions (read Go packages) do you use?

Have you met a situation where you was forced to change hash algo due to performance or collision problems?

#golang Developer Survey 2021 Results

https://go.dev/blog/survey2021-results

Hi, gophers.

After yesterday's tweet about #golang dev survey results, I think it's a good time to make an open, friendly and easy to access go-perf community thankfully to @github discussions 💕

https://github.com/go-perf/go-perf

I hope that in 1y this will not be a problematic topic 😉

Because community is fresh and empty and someone might be shy to start, feel free to rush to https://github.com/go-perf/go-perf/discussions/categories/show-and-tell and share your project! (with benchmarks 😄)

WOAH @BytedanceTalk proposed pdqsort for #golang 1.19 https://github.com/golang/go/issues/50154

Change: https://github.com/golang/go/commit/72e77a7f41bbf45d466119444307fd3ae996e257

pdqsort author: https://news.ycombinator.com/item?id=31107187

Also a great article by @Danlark1 Changing std:sort at Google’s scale and beyond
https://news.ycombinator.com/item?id=31098822

By an accident have found a page where you can see all #golang perf-related issue and their progress https://github.com/orgs/golang/projects/8/views/1

As I understand it's a @github feature to have a better view of issues. Might be useful.

(no idea what it's not visible on Golang Projects tab)

Shaving 40% Off Google’s B-Tree Implementation with #golang Generics by @michalmatczuk @ScyllaDB https://www.scylladb.com/2022/04/27/shaving-40-off-googles-b-tree-implementation-with-go-generics/

Issue + code
https://github.com/google/btree/issues/41
https://github.com/Michal-Leszczynski/btree

Long-awaited #golang soft memory limit:

The core feature has landed, but I still need to land a few new metrics to help support visibility into this. by @mknyswe

https://github.com/golang/go/issues/48409

Aaaaaaand we will get atomic wrappers in #golang 1.19.

IMO, that's awesome 💕

https://github.com/golang/go/commit/ffe48e00adf3078944015186819a1ed5c6aa8bec

From "#golang compiler and runtime meeting notes":

> do we want to have an external monthly version of this meeting?

for { println("YES") }

(please, don't comment on the issue, everything will be deleted as a spam)
https://github.com/golang/go/issues/43930#issuecomment-1122745144

I hope that making this meeting public will make @golang team life easier because feedback loop will be shorter with more eyes on 1 thing.

Changing one character wildly improved our application's performance (tldr: s/<=/< 😉)

https://segment.com/blog/changing-one-character-improved-app-performance/ by @segment #golang