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Update performance numbers
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Natalie Weizenbaum
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4fa365adca
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perf.md
160
perf.md
@ -3,8 +3,8 @@ the benefit Dart Sass could provide relative to other implementations.
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This was tested against:
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* libsass da91d985 and sassc 66f0ef3 compiled with g++ (Debian 10.3.0-11) 10.3.0.
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* Dart Sass bf318a8 on Dart 2.14.1 (stable) (Wed Sep 8 13:33:08 2021 +0200) on "linux_x64" and Node v16.10.0.
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* libsass 006bbf5 and sassc 66f0ef3 compiled with g++ (Debian 11.2.0-10) 11.2.0.
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* Dart Sass 4fa365a on Dart 2.15.0 (stable) (Fri Dec 3 14:23:23 2021 +0100) on "linux_x64" and Node v16.10.0.
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on Debian x64 with Intel Core i7-8650U CPU @ 1.90GHz.
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@ -16,139 +16,139 @@ I ran five instances of each configuration and recorded the fastest time.
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Running on a file containing 4 instances of `.foo {a: b}`:
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* sassc: 0.002s
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* Dart Sass from a script snapshot: 0.177s
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* Dart Sass native executable: 0.009s
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* Dart Sass on Node.js: 0.219s
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* sassc: 0.003s
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* Dart Sass from a script snapshot: 0.327s
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* Dart Sass native executable: 0.011s
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* Dart Sass on Node.js: 0.281s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 4.5x slower than libsass
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* 24.3x faster than Dart Sass on Node
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* 3.7x slower than libsass
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* 25.5x faster than Dart Sass on Node
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## Large Plain CSS
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Running on a file containing 2^17 instances of `.foo {a: b}`:
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* sassc: 1.607s
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* Dart Sass from a script snapshot: 1.643s
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* Dart Sass native executable: 1.473s
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* Dart Sass on Node.js: 2.529s
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* sassc: 1.769s
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* Dart Sass from a script snapshot: 2.061s
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* Dart Sass native executable: 1.666s
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* Dart Sass on Node.js: 3.913s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.1x faster than libsass
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* 1.7x faster than Dart Sass on Node
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* 2.3x faster than Dart Sass on Node
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## Preceding Sparse `@extend`
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Running on a file containing `.x {@extend .y}`, 2^17 instances of `.foo {a: b}`, and then `.y {a: b}`:
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* sassc: 1.643s
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* Dart Sass from a script snapshot: 1.723s
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* Dart Sass native executable: 1.535s
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* Dart Sass on Node.js: 2.574s
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* sassc: 1.846s
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* Dart Sass from a script snapshot: 2.218s
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* Dart Sass native executable: 1.726s
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* Dart Sass on Node.js: 4.176s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.1x faster than libsass
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* 1.7x faster than Dart Sass on Node
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* 2.4x faster than Dart Sass on Node
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## Following Sparse `@extend`
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Running on a file containing `.y {a: b}`, 2^17 instances of `.foo {a: b}`, and then `.x {@extend .y}`:
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* sassc: 1.642s
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* Dart Sass from a script snapshot: 1.676s
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* Dart Sass native executable: 1.517s
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* Dart Sass on Node.js: 2.547s
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* sassc: 1.778s
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* Dart Sass from a script snapshot: 2.058s
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* Dart Sass native executable: 2.152s
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* Dart Sass on Node.js: 4.231s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.1x faster than libsass
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* 1.7x faster than Dart Sass on Node
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* 1.2x slower than libsass
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* 2.0x faster than Dart Sass on Node
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## Preceding Dense `@extend`
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Running on a file containing `.bar {@extend .foo}` followed by 2^17 instances of `.foo {a: b}`:
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* sassc: 2.336s
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* Dart Sass from a script snapshot: 2.453s
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* Dart Sass native executable: 2.312s
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* Dart Sass on Node.js: 5.874s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* identical to libsass
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* 2.5x faster than Dart Sass on Node
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## Following Dense `@extend`
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Running on a file containing 2^17 instances of `.foo {a: b}` followed by `.bar {@extend .foo}`:
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* sassc: 2.353s
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* Dart Sass from a script snapshot: 2.357s
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* Dart Sass native executable: 2.220s
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* Dart Sass on Node.js: 5.587s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.1x faster than libsass
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* 2.5x faster than Dart Sass on Node
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## Bootstrap
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Running on a file containing 16 instances of importing the Bootstrap framework:
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* sassc: 0.789s
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* Dart Sass from a script snapshot: 1.517s
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* Dart Sass native executable: 0.691s
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* Dart Sass on Node.js: 2.799s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.1x faster than libsass
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* 4.1x faster than Dart Sass on Node
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## a11ycolor
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Running on a file containing test cases for a computation-intensive color-processing library:
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* sassc: 0.205s
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* Dart Sass from a script snapshot: 0.649s
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* Dart Sass native executable: 0.245s
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* Dart Sass on Node.js: 0.827s
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* sassc: 2.393s
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* Dart Sass from a script snapshot: 2.981s
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* Dart Sass native executable: 2.942s
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* Dart Sass on Node.js: 9.858s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.2x slower than libsass
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* 3.4x faster than Dart Sass on Node
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## Following Dense `@extend`
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Running on a file containing 2^17 instances of `.foo {a: b}` followed by `.bar {@extend .foo}`:
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* sassc: 2.685s
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* Dart Sass from a script snapshot: 3.838s
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* Dart Sass native executable: 3.033s
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* Dart Sass on Node.js: 9.527s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.1x slower than libsass
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* 3.1x faster than Dart Sass on Node
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## Bootstrap
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Running on a file containing 16 instances of importing the Bootstrap framework:
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* sassc: 0.891s
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* Dart Sass from a script snapshot: 2.041s
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* Dart Sass native executable: 0.787s
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* Dart Sass on Node.js: 4.218s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.1x faster than libsass
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* 5.4x faster than Dart Sass on Node
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## a11ycolor
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Running on a file containing test cases for a computation-intensive color-processing library:
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* sassc: 0.387s
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* Dart Sass from a script snapshot: 0.970s
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* Dart Sass native executable: 0.367s
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* Dart Sass on Node.js: 1.409s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.1x faster than libsass
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* 3.8x faster than Dart Sass on Node
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## Duomo
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Running on a file containing the output of the numerically-intensive Duomo framework (skipping LibSass due to module system use):
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* Dart Sass from a script snapshot: 2.150s
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* Dart Sass native executable: 1.406s
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* Dart Sass on Node.js: 4.449s
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* Dart Sass from a script snapshot: 3.946s
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* Dart Sass native executable: 2.169s
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* Dart Sass on Node.js: 7.108s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 3.2x faster than Dart Sass on Node
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* 3.3x faster than Dart Sass on Node
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## Carbon
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Running on a file containing the output of the import-intensive Carbon framework:
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* sassc: 7.481s
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* Dart Sass from a script snapshot: 5.891s
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* Dart Sass native executable: 5.734s
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* Dart Sass on Node.js: 15.725s
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* sassc: 9.373s
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* Dart Sass from a script snapshot: 7.454s
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* Dart Sass native executable: 7.537s
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* Dart Sass on Node.js: 25.790s
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Based on these numbers, Dart Sass from a native executable is approximately:
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* 1.3x faster than libsass
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* 2.7x faster than Dart Sass on Node
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* 1.2x faster than libsass
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* 3.4x faster than Dart Sass on Node
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# Prior Measurements
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