forked from lix-project/lix
Jade Lovelace
0d37b99a15
Benchmarks say that it does not regress performance by more than 1%
(which is where it gets really hard to measure accurately anyhow).
Meson appears to be planning to do this for us without asking us in a
release we will get in the future, and it seems good enough to ship
today:
https://mesonbuild.com/Release-notes-for-1-4-0.html#ndebug-setting-now-controls-c-stdlib-assertions
Benchmarks:
| Command | Mean [ms] | Min [ms] | Max [ms] | Relative |
|:---|---:|---:|---:|---:|
| `result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix` | 418.4 ± 25.0 | 396.9 | 451.2 | 1.01 ± 0.08 |
| `result/bin/nix --extra-experimental-features 'nix-command flakes' eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix` | 416.1 ± 23.9 | 397.1 | 445.4 | 1.00 |
| Command | Mean [s] | Min [s] | Max [s] | Relative |
|:---|---:|---:|---:|---:|
| `GC_INITIAL_HEAP_SIZE=10g result-asserts/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 4.147 ± 0.021 | 4.123 | 4.195 | 1.00 |
| `GC_INITIAL_HEAP_SIZE=10g result/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 4.149 ± 0.027 | 4.126 | 4.215 | 1.00 ± 0.01 |
| Command | Mean [s] | Min [s] | Max [s] | Relative |
|:---|---:|---:|---:|---:|
| `result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 5.838 ± 0.023 | 5.799 | 5.867 | 1.01 ± 0.01 |
| `result/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 5.788 ± 0.044 | 5.715 | 5.876 | 1.00 |
| Command | Mean [s] | Min [s] | Max [s] | Relative |
|:---|---:|---:|---:|---:|
| `result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 hello` | 15.993 ± 0.081 | 15.829 | 16.096 | 1.01 ± 0.01 |
| `result/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 hello` | 15.897 ± 0.075 | 15.807 | 16.047 | 1.00 |
Fixes: lix-project/lix#4
Change-Id:
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|---|---|---|
| .. | ||
| better-errors-in-nix-repl.md | ||
| debugger-locals-for-let-expressions.md | ||
| debugger-on-trace.md | ||
| drop-vendored-toml11.md | ||
| drv-string-parse-hang.md | ||
| dup-attr-errors.md | ||
| empty-search-regex.md | ||
| enter-debugger-more-reliably-in-let-and-calls.md | ||
| env-size-reduction.md | ||
| eval-system.md | ||
| forbid-nested-debuggers.md | ||
| formal-order.md | ||
| inherit-error-positions.md | ||
| inherit-from-by-need.md | ||
| new-assertions.md | ||
| nix-env-json-drv-path.md | ||
| nix-flake-check-logs-actions.md | ||
| nix-flake-update-ux.md | ||
| nixversion-fake.md | ||
| no-cache-eval-errors.md | ||
| print-value-in-coercion-error.md | ||
| print-value-in-type-error.md | ||
| reduce-debugger-clutter.md | ||
| repl-doc-command.md | ||
| short-expr-flag.md | ||
| source-location-in-while-evaluating-attribute.md | ||
| source-positions-in-errors.md | ||
| stack-overflow-segfaults.md | ||
| upstart-removal.md | ||
| with-error-reporting.md | ||