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Author	SHA1	Message	Date
Seth FlynnandBernardo Meurer Costa	c1370bc81c	build: use mimalloc ... mimalloc is a compact general purpose allocator from Microsoft. It consistently outperforms glibc's `malloc()` in allocation-heavy workloads, such as Lix's evaluator It's currently only linked in the main `nix` executable, as Boehm's GC uses its own allocator. Other allocations that *do* go through glibc's `malloc()` are still much faster, though Benchmarked on x86_64-linux against Nixpkgs `bd07873`: | attribute | thunks | lix@`1396012` | mimalloc | uplift | |-------------------|---------|---------------|----------|--------| | hello | 206444 | 0.726s | 0.620s | 1.17x | | chromium | 1177382 | 2.273s | 2.136s | 1.06x | | firefox-unwrapped | 1394797 | 2.521s | 2.378s | 1.06x | | texliveFull | 3186440 | 4.992s | 4.672s | 1.07x | | nixosTests.gnome | 7905808 | 6.115s | 5.723s | 1.07x | Based-on: https://github.com/NixOS/nix/pull/15596 Co-authored-by: Bernardo Meurer Costa <beme@anthropic.com> Change-Id: I3ad92eacc075efeaf3d9f7730ada7b29835536a4	2026-07-04 10:39:30 +00:00
4 people	b7cf773540	libexpr: warn when encountering IFD with warn-import-from-derivation ... This is intended to be a softer version of `allow-import-from-derivation`, allowing for users to only flag when IFD is encountered rather than error out Based-on: https://github.com/NixOS/nix/pull/13279 Co-authored-by: gustavderdrache <alex.ford@determinate.systems> Co-authored-by: Eelco Dolstra <edolstra@gmail.com> Change-Id: I879a444e3a24b4e82a8cea3a5a94834c78c3924a	2026-03-05 13:39:12 +00:00
Seth FlynnandSergei Zimmerman	8eb57801a5	nix3: use pure/restricted eval for help pages ... This avoids any complications that can arise from the environment affecting evaluation of the help pages (which don't need to be calling out to anything external anyways) I don't think this is actively causing problems now - though it did in Nix! - so this is largely preventative, but I don't really see a reason why this was ever running in impure mode in the first place either Based-on: https://github.com/NixOS/nix/pull/14086 Co-authored-by: Sergei Zimmerman <sergei@zimmerman.foo> Change-Id: Ice0c760562d70c09934249edc3b767473516d372	2025-12-21 13:56:58 +00:00
3 people	f1ef994f12	libexpr: enable parallel marking in boehm-gc ... Using parallel marking in GC speeds up evaluation a fair bit ``` Benchmark 1: ./lix-main/bin/nix search nixpkgs hello --no-eval-cache Time (mean ± σ): 20.740 s ± 0.046 s [User: 17.583 s, System: 3.062 s] Range (min … max): 20.678 s … 20.794 s 10 runs Benchmark 2: ./lix-parallel-marking/bin/nix search nixpkgs hello --no-eval-cache Time (mean ± σ): 15.037 s ± 0.080 s [User: 19.602 s, System: 3.125 s] Range (min … max): 14.960 s … 15.227 s 10 runs Summary ./lix-parallel-marking/bin/nix search nixpkgs hello --no-eval-cache ran 1.38 ± 0.01 times faster than ./lix-main/bin/nix search nixpkgs hello --no-eval-cache ``` Based-on: https://github.com/NixOS/nix/pull/13708 Co-authored-by: Eelco Dolstra <edolstra@gmail.com> Change-Id: Ibc7625f21e0ee7c8ad66203eeb3aca5d83977731	2025-10-01 23:07:28 +00:00
Seth Flynn	8082f0b843	build: strip compiler references from runtime closure ... Sourced from https://github.com/NixOS/nixpkgs/pull/375030 Fixes: https://git.lix.systems/lix-project/lix/issues/699 Change-Id: Id215437a6519a140dd91127cbd6c2b518f34a397	2025-02-26 23:06:56 -05:00
sethandGerrit Code Review	1a13827425	Merge "libutil/file-descriptor: include sys/syscall.h" into main	2025-02-06 23:20:29 +00:00
Seth Flynn	4e45583d2e	libutil/file-descriptor: include sys/syscall.h ... For `SYS_close_range` Change-Id: Ie3e6a94a354b336c3967efc4a73593d35096bfe0	2025-02-05 10:11:15 -05:00
sethandeldritch horrors	f7687fa414	libstore/linux: include sys/syscall.h ... Per `seccomp(2)`, this header defines the `SYS_*` constants used Found in https://github.com/NixOS/nixpkgs/pull/353576 Change-Id: I64ebc5513c53500b7a9012eaa664c2e59f49ceac	2024-12-08 18:49:27 +00:00