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Update performance numbers

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Natalie Weizenbaum 2022-01-05 16:12:56 -08:00
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@ -3,8 +3,8 @@ the benefit Dart Sass could provide relative to other implementations.
This was tested against: This was tested against:
* libsass da91d985 and sassc 66f0ef3 compiled with g++ (Debian 10.3.0-11) 10.3.0. * libsass 006bbf5 and sassc 66f0ef3 compiled with g++ (Debian 11.2.0-10) 11.2.0.
* 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. * 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.
on Debian x64 with Intel Core i7-8650U CPU @ 1.90GHz. on Debian x64 with Intel Core i7-8650U CPU @ 1.90GHz.
@ -16,139 +16,139 @@ I ran five instances of each configuration and recorded the fastest time.
Running on a file containing 4 instances of `.foo {a: b}`: Running on a file containing 4 instances of `.foo {a: b}`:
* sassc: 0.002s * sassc: 0.003s
* Dart Sass from a script snapshot: 0.177s * Dart Sass from a script snapshot: 0.327s
* Dart Sass native executable: 0.009s * Dart Sass native executable: 0.011s
* Dart Sass on Node.js: 0.219s * Dart Sass on Node.js: 0.281s
Based on these numbers, Dart Sass from a native executable is approximately: Based on these numbers, Dart Sass from a native executable is approximately:
* 4.5x slower than libsass * 3.7x slower than libsass
* 24.3x faster than Dart Sass on Node * 25.5x faster than Dart Sass on Node
## Large Plain CSS ## Large Plain CSS
Running on a file containing 2^17 instances of `.foo {a: b}`: Running on a file containing 2^17 instances of `.foo {a: b}`:
* sassc: 1.607s * sassc: 1.769s
* Dart Sass from a script snapshot: 1.643s * Dart Sass from a script snapshot: 2.061s
* Dart Sass native executable: 1.473s * Dart Sass native executable: 1.666s
* Dart Sass on Node.js: 2.529s * Dart Sass on Node.js: 3.913s
Based on these numbers, Dart Sass from a native executable is approximately: Based on these numbers, Dart Sass from a native executable is approximately:
* 1.1x faster than libsass * 1.1x faster than libsass
* 1.7x faster than Dart Sass on Node * 2.3x faster than Dart Sass on Node
## Preceding Sparse `@extend` ## Preceding Sparse `@extend`
Running on a file containing `.x {@extend .y}`, 2^17 instances of `.foo {a: b}`, and then `.y {a: b}`: Running on a file containing `.x {@extend .y}`, 2^17 instances of `.foo {a: b}`, and then `.y {a: b}`:
* sassc: 1.643s * sassc: 1.846s
* Dart Sass from a script snapshot: 1.723s * Dart Sass from a script snapshot: 2.218s
* Dart Sass native executable: 1.535s * Dart Sass native executable: 1.726s
* Dart Sass on Node.js: 2.574s * Dart Sass on Node.js: 4.176s
Based on these numbers, Dart Sass from a native executable is approximately: Based on these numbers, Dart Sass from a native executable is approximately:
* 1.1x faster than libsass * 1.1x faster than libsass
* 1.7x faster than Dart Sass on Node * 2.4x faster than Dart Sass on Node
## Following Sparse `@extend` ## Following Sparse `@extend`
Running on a file containing `.y {a: b}`, 2^17 instances of `.foo {a: b}`, and then `.x {@extend .y}`: Running on a file containing `.y {a: b}`, 2^17 instances of `.foo {a: b}`, and then `.x {@extend .y}`:
* sassc: 1.642s * sassc: 1.778s
* Dart Sass from a script snapshot: 1.676s * Dart Sass from a script snapshot: 2.058s
* Dart Sass native executable: 1.517s * Dart Sass native executable: 2.152s
* Dart Sass on Node.js: 2.547s * Dart Sass on Node.js: 4.231s
Based on these numbers, Dart Sass from a native executable is approximately: Based on these numbers, Dart Sass from a native executable is approximately:
* 1.1x faster than libsass * 1.2x slower than libsass
* 1.7x faster than Dart Sass on Node * 2.0x faster than Dart Sass on Node
## Preceding Dense `@extend` ## Preceding Dense `@extend`
Running on a file containing `.bar {@extend .foo}` followed by 2^17 instances of `.foo {a: b}`: Running on a file containing `.bar {@extend .foo}` followed by 2^17 instances of `.foo {a: b}`:
* sassc: 2.336s * sassc: 2.393s
* Dart Sass from a script snapshot: 2.453s * Dart Sass from a script snapshot: 2.981s
* Dart Sass native executable: 2.312s * Dart Sass native executable: 2.942s
* Dart Sass on Node.js: 5.874s * Dart Sass on Node.js: 9.858s
Based on these numbers, Dart Sass from a native executable is approximately:
* identical to libsass
* 2.5x faster than Dart Sass on Node
## Following Dense `@extend`
Running on a file containing 2^17 instances of `.foo {a: b}` followed by `.bar {@extend .foo}`:
* sassc: 2.353s
* Dart Sass from a script snapshot: 2.357s
* Dart Sass native executable: 2.220s
* Dart Sass on Node.js: 5.587s
Based on these numbers, Dart Sass from a native executable is approximately:
* 1.1x faster than libsass
* 2.5x faster than Dart Sass on Node
## Bootstrap
Running on a file containing 16 instances of importing the Bootstrap framework:
* sassc: 0.789s
* Dart Sass from a script snapshot: 1.517s
* Dart Sass native executable: 0.691s
* Dart Sass on Node.js: 2.799s
Based on these numbers, Dart Sass from a native executable is approximately:
* 1.1x faster than libsass
* 4.1x faster than Dart Sass on Node
## a11ycolor
Running on a file containing test cases for a computation-intensive color-processing library:
* sassc: 0.205s
* Dart Sass from a script snapshot: 0.649s
* Dart Sass native executable: 0.245s
* Dart Sass on Node.js: 0.827s
Based on these numbers, Dart Sass from a native executable is approximately: Based on these numbers, Dart Sass from a native executable is approximately:
* 1.2x slower than libsass * 1.2x slower than libsass
* 3.4x faster than Dart Sass on Node * 3.4x faster than Dart Sass on Node
## Following Dense `@extend`
Running on a file containing 2^17 instances of `.foo {a: b}` followed by `.bar {@extend .foo}`:
* sassc: 2.685s
* Dart Sass from a script snapshot: 3.838s
* Dart Sass native executable: 3.033s
* Dart Sass on Node.js: 9.527s
Based on these numbers, Dart Sass from a native executable is approximately:
* 1.1x slower than libsass
* 3.1x faster than Dart Sass on Node
## Bootstrap
Running on a file containing 16 instances of importing the Bootstrap framework:
* sassc: 0.891s
* Dart Sass from a script snapshot: 2.041s
* Dart Sass native executable: 0.787s
* Dart Sass on Node.js: 4.218s
Based on these numbers, Dart Sass from a native executable is approximately:
* 1.1x faster than libsass
* 5.4x faster than Dart Sass on Node
## a11ycolor
Running on a file containing test cases for a computation-intensive color-processing library:
* sassc: 0.387s
* Dart Sass from a script snapshot: 0.970s
* Dart Sass native executable: 0.367s
* Dart Sass on Node.js: 1.409s
Based on these numbers, Dart Sass from a native executable is approximately:
* 1.1x faster than libsass
* 3.8x faster than Dart Sass on Node
## Duomo ## Duomo
Running on a file containing the output of the numerically-intensive Duomo framework (skipping LibSass due to module system use): Running on a file containing the output of the numerically-intensive Duomo framework (skipping LibSass due to module system use):
* Dart Sass from a script snapshot: 2.150s * Dart Sass from a script snapshot: 3.946s
* Dart Sass native executable: 1.406s * Dart Sass native executable: 2.169s
* Dart Sass on Node.js: 4.449s * Dart Sass on Node.js: 7.108s
Based on these numbers, Dart Sass from a native executable is approximately: Based on these numbers, Dart Sass from a native executable is approximately:
* 3.2x faster than Dart Sass on Node * 3.3x faster than Dart Sass on Node
## Carbon ## Carbon
Running on a file containing the output of the import-intensive Carbon framework: Running on a file containing the output of the import-intensive Carbon framework:
* sassc: 7.481s * sassc: 9.373s
* Dart Sass from a script snapshot: 5.891s * Dart Sass from a script snapshot: 7.454s
* Dart Sass native executable: 5.734s * Dart Sass native executable: 7.537s
* Dart Sass on Node.js: 15.725s * Dart Sass on Node.js: 25.790s
Based on these numbers, Dart Sass from a native executable is approximately: Based on these numbers, Dart Sass from a native executable is approximately:
* 1.3x faster than libsass * 1.2x faster than libsass
* 2.7x faster than Dart Sass on Node * 3.4x faster than Dart Sass on Node
# Prior Measurements # Prior Measurements