lix/doc/manual/rl-next/gc-roots-darwin.md

---
synopsis: Find GC roots using libproc on Darwin
cls: 723
credits: artemist
category: Improvements
---

Previously, the garbage collector found runtime roots on Darwin by shelling out to `lsof -n -w -F n` then parsing the result. The version of `lsof` packaged in Nixpkgs is very slow on Darwin, so Lix now uses `libproc` directly to speed up GC root discovery, in some tests taking 250ms now instead of 40s.
release notes: add a bunch of them Also fix typos introduced by the commits I read. I have run the addDrvOutputDependencies release note past Ericson since I was confused by what the heck it was doing, and he was saying it was reasonable. Change-Id: Id015353b00938682f7faae7de43df7f991a5237e 2024-05-20 19:17:54 +00:00			`---`
			`synopsis: Find GC roots using libproc on Darwin`
			`cls: 723`
			`credits: artemist`
			`category: Improvements`
			`---`

			Previously, the garbage collector found runtime roots on Darwin by shelling out to `lsof -n -w -F n` then parsing the result. The version of `lsof` packaged in Nixpkgs is very slow on Darwin, so Lix now uses `libproc` directly to speed up GC root discovery, in some tests taking 250ms now instead of 40s.