817c933878
Generated from https://github.com/NixOS/nix/pull/2761: ``` ns calls ns/call - /home/grahamc/projects/github.com/NixOS/nixpkgs/pkgs/stdenv/generic/check-meta.nix:22:5 591200 15026 39.3451 + /home/grahamc/projects/github.com/NixOS/nixpkgs/pkgs/stdenv/generic/check-meta.nix:22:5 8744 308 28.3896 ``` more, generated by: ``` $ NIX_SHOW_STATS=1 NIX_COUNT_CALLS=1 nix-instantiate ./pkgs/top-level/release.nix -A unstable > before 2>&1 $ jq -r '.functions | map((.name + ":" + .file + ":" + (.line|tostring) + ":" + (.column|tostring) + " " + (.count|tostring))) | .[]' before | sort > before.list ``` applying this patch, then: ``` $ NIX_SHOW_STATS=1 NIX_COUNT_CALLS=1 nix-instantiate ./pkgs/top-level/release.nix -A unstable > after 2>&1 $ jq -r '.functions | map((.name + ":" + .file + ":" + (.line|tostring) + ":" + (.column|tostring) + " " + (.count|tostring))) | .[]' after | sort > after.list ``` and then diffing before.list and after.list to get: ``` calls - :/home/grahamc/projects/github.com/NixOS/nixpkgs/pkgs/stdenv/generic/check-meta.nix:4:1 7513 + :/home/grahamc/projects/github.com/NixOS/nixpkgs/pkgs/stdenv/generic/check-meta.nix:4:1 154 - mutuallyExclusive:/home/grahamc/projects/github.com/NixOS/nixpkgs/lib/lists.nix:658:23 7513 + mutuallyExclusive:/home/grahamc/projects/github.com/NixOS/nixpkgs/lib/lists.nix:658:23 154 - mutuallyExclusive:/home/grahamc/projects/github.com/NixOS/nixpkgs/lib/lists.nix:658:26 7513 + mutuallyExclusive:/home/grahamc/projects/github.com/NixOS/nixpkgs/lib/lists.nix:658:26 154 - onlyLicenses:/home/grahamc/projects/github.com/NixOS/nixpkgs/pkgs/stdenv/generic/check-meta.nix:21:18 15026 + onlyLicenses:/home/grahamc/projects/github.com/NixOS/nixpkgs/pkgs/stdenv/generic/check-meta.nix:21:18 308 ``` The following information is from `NIX_SHOW_STATS=1 GC_INITIAL_HEAP_SIZE=4g nix-env -f ./outpaths.nix -qaP --no-name --out-path --arg checkMeta true`: | stat | before | after | Δ | Δ% | |:---------------------------|---------------:|---------------:|:----------------|--------:| | **cpuTime** | 179.915 | 145.543 | 🡖 34.372 | -19.10% | | **envs-bytes** | 3,900,878,824 | 3,599,483,208 | 🡖 301,395,616 | -7.73% | | **envs-elements** | 214,426,071 | 185,881,709 | 🡖 28,544,362 | -13.31% | | **envs-number** | 136,591,891 | 132,026,846 | 🡖 4,565,045 | -3.34% | | **gc-heapSize** | 11,400,048,640 | 12,314,890,240 | 🡕 914,841,600 | 8.02% | | **gc-totalBytes** | 25,976,902,560 | 24,510,740,176 | 🡖 1,466,162,384 | -5.64% | | **list-bytes** | 1,665,290,080 | 1,665,290,080 | 0 | | | **list-concats** | 7,264,417 | 7,264,417 | 0 | | | **list-elements** | 208,161,260 | 208,161,260 | 0 | | | **nrAvoided** | 191,359,386 | 179,693,661 | 🡖 11,665,725 | -6.10% | | **nrFunctionCalls** | 119,665,062 | 116,348,547 | 🡖 3,316,515 | -2.77% | | **nrLookups** | 80,996,257 | 76,069,825 | 🡖 4,926,432 | -6.08% | | **nrOpUpdateValuesCopied** | 213,930,649 | 213,930,649 | 0 | | | **nrOpUpdates** | 12,025,937 | 12,025,937 | 0 | | | **nrPrimOpCalls** | 88,105,604 | 86,451,598 | 🡖 1,654,006 | -1.88% | | **nrThunks** | 196,842,044 | 175,126,701 | 🡖 21,715,343 | -11.03% | | **sets-bytes** | 7,678,425,776 | 7,285,767,928 | 🡖 392,657,848 | -5.11% | | **sets-elements** | 310,241,340 | 294,373,227 | 🡖 15,868,113 | -5.11% | | **sets-number** | 29,079,202 | 27,601,310 | 🡖 1,477,892 | -5.08% | | **sizes-Attr** | 24 | 24 | 0 | | | **sizes-Bindings** | 8 | 8 | 0 | | | **sizes-Env** | 16 | 16 | 0 | | | **sizes-Value** | 24 | 24 | 0 | | | **symbols-bytes** | 16,474,666 | 16,474,676 | 🡕 10 | 0.00% | | **symbols-number** | 376,426 | 376,427 | 🡕 1 | 0.00% | | **values-bytes** | 6,856,506,288 | 6,316,585,560 | 🡖 539,920,728 | -7.87% | | **values-number** | 285,687,762 | 263,191,065 | 🡖 22,496,697 | -7.87% | The following information is from `NIX_SHOW_STATS=1 GC_INITIAL_HEAP_SIZE=4g nix-instantiate ./nixos/release-combined.nix -A tested`: | stat | before | after | Δ | Δ% | |:---------------------------|---------------:|---------------:|:----------------|-------:| | **cpuTime** | 256.071 | 237.531 | 🡖 18.54 | -7.24% | | **envs-bytes** | 7,111,004,192 | 7,041,478,520 | 🡖 69,525,672 | -0.98% | | **envs-elements** | 346,236,940 | 339,588,487 | 🡖 6,648,453 | -1.92% | | **envs-number** | 271,319,292 | 270,298,164 | 🡖 1,021,128 | -0.38% | | **gc-heapSize** | 8,995,291,136 | 10,110,009,344 | 🡕 1,114,718,208 | 12.39% | | **gc-totalBytes** | 37,172,737,408 | 36,878,391,888 | 🡖 294,345,520 | -0.79% | | **list-bytes** | 1,886,162,656 | 1,886,163,472 | 🡕 816 | 0.00% | | **list-concats** | 6,898,114 | 6,898,114 | 0 | | | **list-elements** | 235,770,332 | 235,770,434 | 🡕 102 | 0.00% | | **nrAvoided** | 328,829,821 | 326,618,157 | 🡖 2,211,664 | -0.67% | | **nrFunctionCalls** | 240,850,845 | 239,998,495 | 🡖 852,350 | -0.35% | | **nrLookups** | 144,849,632 | 142,126,339 | 🡖 2,723,293 | -1.88% | | **nrOpUpdateValuesCopied** | 251,032,504 | 251,032,504 | 0 | | | **nrOpUpdates** | 17,903,110 | 17,903,110 | 0 | | | **nrPrimOpCalls** | 140,674,913 | 139,485,975 | 🡖 1,188,938 | -0.85% | | **nrThunks** | 294,643,131 | 288,678,022 | 🡖 5,965,109 | -2.02% | | **sets-bytes** | 9,464,322,192 | 9,456,172,048 | 🡖 8,150,144 | -0.09% | | **sets-elements** | 377,474,889 | 377,134,877 | 🡖 340,012 | -0.09% | | **sets-number** | 50,615,607 | 50,616,875 | 🡕 1,268 | 0.00% | | **sizes-Attr** | 24 | 24 | 0 | | | **sizes-Bindings** | 8 | 8 | 0 | | | **sizes-Env** | 16 | 16 | 0 | | | **sizes-Value** | 24 | 24 | 0 | | | **symbols-bytes** | 3,147,102 | 3,147,064 | 🡖 38 | -0.00% | | **symbols-number** | 82,819 | 82,819 | 0 | | | **values-bytes** | 11,147,448,768 | 10,996,111,512 | 🡖 151,337,256 | -1.36% | | **values-number** | 464,477,032 | 458,171,313 | 🡖 6,305,719 | -1.36% |
Nixpkgs is a collection of packages for the Nix package manager. It is periodically built and tested by the Hydra build daemon as so-called channels. To get channel information via git, add nixpkgs-channels as a remote:
% git remote add channels https://github.com/NixOS/nixpkgs-channels.git
For stability and maximum binary package support, it is recommended to maintain
custom changes on top of one of the channels, e.g. nixos-18.09 for the latest
release and nixos-unstable for the latest successful build of master:
% git remote update channels
% git rebase channels/nixos-18.09
For pull requests, please rebase onto nixpkgs master.
NixOS Linux distribution source code is located inside
nixos/ folder.
- NixOS installation instructions
- Documentation (Nix Expression Language chapter)
- Manual (How to write packages for Nix)
- Manual (NixOS)
- Community maintained wiki
- Continuous package builds for unstable/master
- Continuous package builds for 18.09 release
- Tests for unstable/master
- Tests for 18.09 release
Communication:
Note: MIT license does not apply to the packages built by Nixpkgs, merely to the package descriptions (Nix expressions, build scripts, and so on). It also might not apply to patches included in Nixpkgs, which may be derivative works of the packages to which they apply. The aforementioned artifacts are all covered by the licenses of the respective packages.