Michael Knyszek

GitHub | Bluesky | LinkedIn

Software engineer working on XLA for TPUs at Google.

Previously, I worked on the Go programming language for ~7.5 years, mostly on the runtime.

works

Go garbage collector performance improvements

The Green Tea garbage collector
Allocation headers
Pacer redesign
...

Go memory allocator improvements

Page allocator redesign
Page scavenging
Scalable P-local cache refill
Allocator fast path (mallocgc) optimizations
...

Go standard library features and improvements

GOMEMLIMIT and runtime/debug.SetMemoryLimit
runtime/metrics package
runtime/trace internals redesign
unique.Handle
weak.Pointer
sync.Map redesign
...

Go team build infrastructure and performance dashboard, including the benchmark suite

talks

"Advancing Go Garbage Collection with Green Tea", Gophercon US 2025
"Respecting Memory Limits in Go", GopherCon EU 2022
"Evolving the Go Memory Manager's RAM and CPU Efficiency", GopherCon US 2020

technical writing

music

"Future Voids", misc. electronic music

contact

mknyszek@golang.org