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Add benchmarks
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‎README.md‎

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@@ -205,4 +205,8 @@ $compiler->setOptions([
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'silenceDeprecations' => true,
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'verbose' => true,
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]);
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```
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```
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## Benchmarks
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See the [benchmark.md](benchmark.md) file for performance benchmarks.

‎README.ru.md‎

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@@ -205,4 +205,8 @@ $compiler->setOptions([
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'silenceDeprecations' => true,
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'verbose' => true,
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]);
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```
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```
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## Бенчмарки
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Смотрите файл [benchmark.md](benchmark.md) для просмотра результатов производительности.

‎benchmark.md‎

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## Results
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| Compiler | Time (sec) | CSS Size (KB) | Memory (MB) |
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|------------|-------------|---------------|-------------|
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| bugo/sass-embedded-php | 1.4567 | 3,559.42 | 28.00 |
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| bugo/sass-embedded-php (optimized) | 1.4455 | 3,559.42 | 2.00 |
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## Process Caching Performance (5 iterations)
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| Compiler | Avg Time (sec) | Avg Memory (MB) |
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|------------|----------------|----------------|
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| bugo/sass-embedded-php | 1.4911 | 2.40 |
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| bugo/sass-embedded-php (optimized) | 1.4922 | 0.00 |
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## Optimizations Implemented
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- **Process Caching**: Node.js processes are cached and reused to avoid spawning overhead
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- **Streaming for Large Data**: Input data is processed in chunks to prevent memory exhaustion
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- **Reduced JSON Overhead**: Only necessary data is transmitted between PHP and Node.js
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- **Generator Support**: Large compilation results can be processed chunk-by-chunk using generators
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- **Memory Limits**: Automatic streaming activation for files larger than 1MB
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*Note: These results are approximate. To get actual results, run `php benchmark.php` in the project root.*

‎benchmark.php‎

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<?php declare(strict_types=1);
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require_once 'vendor/autoload.php';
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use Bugo\Sass\Compiler as EmbeddedCompiler;
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// Function for generating large random SCSS code
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function generateLargeScss(int $numClasses = 100, int $nestedLevels = 3): string
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{
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$scss = '';
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// Generate variables with math functions
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$scss .= '$primary-color: #007bff;' . PHP_EOL;
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$scss .= '$secondary-color: #6c757d;' . PHP_EOL;
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$scss .= '$font-size: 14px;' . PHP_EOL;
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$scss .= '$border-radius: 5px;' . PHP_EOL;
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$scss .= '$max-width: max(800px, 50vw);' . PHP_EOL;
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$scss .= '$min-padding: min(10px, 2vw);' . PHP_EOL;
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$scss .= '$clamped-size: clamp(12px, 2.5vw, 20px);' . PHP_EOL;
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for ($i = 0; $i < 20; $i++) {
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$randomVal = rand(-50, 50);
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$scss .= '$var' . $i . ': ' . 'abs(' . $randomVal . 'px);' . PHP_EOL;
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$scss .= '$rounded-var' . $i . ': ' . 'round(' . (rand(0, 100) / 3.14) . ');' . PHP_EOL;
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$scss .= '$ceiled-var' . $i . ': ' . 'ceil(' . (rand(0, 100) / 2.7) . 'px);' . PHP_EOL;
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$scss .= '$floored-var' . $i . ': ' . 'floor(' . (rand(0, 100) / 1.8) . 'px);' . PHP_EOL;
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}
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// Generate functions
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$scss .= '@function calculate-size($base, $multiplier: 1) {' . PHP_EOL;
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$scss .= ' @return $base * $multiplier;' . PHP_EOL;
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$scss .= '}' . PHP_EOL;
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// Generate mixins with color functions
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$scss .= '@mixin flex-center {' . PHP_EOL;
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$scss .= ' display: flex;' . PHP_EOL;
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$scss .= ' justify-content: center;' . PHP_EOL;
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$scss .= ' align-items: center;' . PHP_EOL;
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$scss .= '}' . PHP_EOL;
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$scss .= '@mixin button-style($color) {' . PHP_EOL;
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$scss .= ' background-color: lighten($color, 5%);' . PHP_EOL;
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$scss .= ' border: 1px solid saturate($color, 20%);' . PHP_EOL;
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$scss .= ' border-radius: calc($border-radius + 2px);' . PHP_EOL;
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$scss .= ' padding: max(8px, $min-padding) max(15px, calc($min-padding * 2));' . PHP_EOL;
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$scss .= ' &:hover {' . PHP_EOL;
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$scss .= ' background-color: desaturate($color, 10%);' . PHP_EOL;
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$scss .= ' transform: scale(calc(1.05));' . PHP_EOL;
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$scss .= ' }' . PHP_EOL;
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$scss .= '}' . PHP_EOL;
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$scss .= '@mixin color-variations($base-color) {' . PHP_EOL;
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$scss .= ' .light { color: lighten($base-color, 20%); }' . PHP_EOL;
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$scss .= ' .dark { color: darken($base-color, 15%); }' . PHP_EOL;
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$scss .= ' .saturated { color: saturate($base-color, 30%); }' . PHP_EOL;
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$scss .= ' .desaturated { color: desaturate($base-color, 25%); }' . PHP_EOL;
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$scss .= ' .hue-rotated { filter: hue-rotate(45deg); }' . PHP_EOL;
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$scss .= '}' . PHP_EOL;
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// Generate classes with nesting and conditional directives using color and math functions
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for ($i = 0; $i < $numClasses; $i++) {
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$scss .= '.class-' . $i . ' {' . PHP_EOL;
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$scss .= ' background-color: mix($primary-color, $secondary-color, ' . rand(20, 80) . '%);' . PHP_EOL;
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$scss .= ' font-size: clamp($clamped-size, calculate-size($font-size, ' . (rand(1, 3)) . '), 24px);' . PHP_EOL;
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$scss .= ' padding: max($var' . rand(0, 19) . ', $min-padding);' . PHP_EOL;
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$scss .= ' margin: calc($var' . rand(0, 19) . ' + 5px);' . PHP_EOL;
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$scss .= ' border-radius: $border-radius;' . PHP_EOL;
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$scss .= ' max-width: $max-width;' . PHP_EOL;
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$scss .= ' @include color-variations($primary-color);' . PHP_EOL;
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// Conditional directive
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$randomVal = rand(0, 1);
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$scss .= ' @if ' . $randomVal . ' == 1 {' . PHP_EOL;
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$scss .= ' color: lighten($primary-color, 40%);' . PHP_EOL;
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$scss .= ' text-shadow: 1px 1px 2px rgba(0,0,0,0.3);' . PHP_EOL;
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$scss .= ' } @else {' . PHP_EOL;
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$scss .= ' color: darken($primary-color, 20%);' . PHP_EOL;
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$scss .= ' border: 1px solid saturate($primary-color, 15%);' . PHP_EOL;
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$scss .= ' }' . PHP_EOL;
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// Add nesting with color functions
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for ($level = 1; $level <= $nestedLevels; $level++) {
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$scss .= str_repeat(' ', $level) . '&.nested-' . $level . ' {' . PHP_EOL;
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$scss .= str_repeat(' ', $level + 1) . 'filter: hue-rotate(' . (rand(0, 360)) . 'deg) saturate(' . (100 + rand(-20, 20)) . '%);' . PHP_EOL;
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$scss .= str_repeat(' ', $level + 1) . 'background-color: lighten($secondary-color, ' . rand(10, 30) . '%);' . PHP_EOL;
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$scss .= str_repeat(' ', $level + 1) . '@include flex-center;' . PHP_EOL;
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$scss .= str_repeat(' ', $level + 1) . 'transform: scale(calc(1 + ' . (rand(1, 10) / 100) . '));' . PHP_EOL;
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$scss .= str_repeat(' ', $level) . '}' . PHP_EOL;
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}
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$scss .= ' &:hover {' . PHP_EOL;
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$scss .= ' @include button-style(lighten($primary-color, 10%));' . PHP_EOL;
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$scss .= ' }' . PHP_EOL;
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$scss .= '}' . PHP_EOL;
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}
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// Add @for loops with math and color functions
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$scss .= '@for $i from 1 through 20 {' . PHP_EOL;
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$scss .= ' .for-class-#{$i} {' . PHP_EOL;
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$scss .= ' width: calc(10px * $i);' . PHP_EOL;
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$scss .= ' height: min(50px, calc(20px + $i * 2px));' . PHP_EOL;
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$scss .= ' @include button-style(saturate($secondary-color, calc($i * 2%)));' . PHP_EOL;
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$scss .= ' border-radius: clamp(3px, calc($i * 2px), 15px);' . PHP_EOL;
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$scss .= ' filter: hue-rotate(calc($i * 18deg));' . PHP_EOL;
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$scss .= ' }' . PHP_EOL;
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$scss .= '}' . PHP_EOL;
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// Add @each loop with color functions
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$scss .= '$color-names: red, green, blue, yellow, magenta, cyan;' . PHP_EOL;
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$scss .= '$color-values: #ff0000, #00ff00, #0000ff, #ffff00, #ff00ff, #00ffff;' . PHP_EOL;
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$scss .= '@for $i from 1 through length($color-names) {' . PHP_EOL;
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$scss .= ' $name: nth($color-names, $i);' . PHP_EOL;
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$scss .= ' $color: nth($color-values, $i);' . PHP_EOL;
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$scss .= ' .color-#{$name} {' . PHP_EOL;
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$scss .= ' background-color: lighten($color, 10%);' . PHP_EOL;
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$scss .= ' border: 2px solid saturate($color, 20%);' . PHP_EOL;
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$scss .= ' &:hover {' . PHP_EOL;
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$scss .= ' background-color: desaturate($color, 15%);' . PHP_EOL;
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$scss .= ' transform: rotate(calc(var(--rotation, 0deg) + 5deg));' . PHP_EOL;
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$scss .= ' }' . PHP_EOL;
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$scss .= ' }' . PHP_EOL;
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$scss .= '}' . PHP_EOL;
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// Add @while loop with math functions
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$scss .= '$counter: 1;' . PHP_EOL;
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$scss .= '@while $counter <= 15 {' . PHP_EOL;
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$scss .= ' .while-class-#{$counter} {' . PHP_EOL;
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$scss .= ' opacity: calc(0.1 * $counter);' . PHP_EOL;
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$scss .= ' z-index: $counter;' . PHP_EOL;
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$scss .= ' font-size: max(10px, calc(8px + $counter * 0.5px));' . PHP_EOL;
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$scss .= ' }' . PHP_EOL;
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$scss .= ' $counter: $counter + 1;' . PHP_EOL;
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$scss .= '}' . PHP_EOL;
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return $scss;
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}
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// Function to format result data
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function formatResultData(array $data): array
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{
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return [
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'time' => is_numeric($data['time']) ? number_format($data['time'], 4) : $data['time'],
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'size' => is_numeric($data['size']) ? number_format($data['size'], 2) : $data['size'],
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'memory' => is_numeric($data['memory']) ? number_format($data['memory'], 2) : $data['memory'],
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];
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}
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// Generate large SCSS code
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$scss = generateLargeScss(2000, 4);
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// Write SCSS to file in UTF-8
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file_put_contents('generated.scss', $scss, LOCK_EX);
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// Display message about SCSS generation
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echo "Generated SCSS saved to generated.scss\n";
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echo "SCSS size: " . strlen($scss) . " bytes\n";
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// Array of compilers
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$compilers = [
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'bugo/sass-embedded-php' => function() {
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$compiler = new EmbeddedCompiler();
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$compiler->setOptions([
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'sourceMap' => true,
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'sourceFile' => 'generated.scss',
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'sourceMapPath' => 'result.css.map',
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'includeSources' => true
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]);
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return $compiler;
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},
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'bugo/sass-embedded-php (optimized)' => function() {
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$compiler = new EmbeddedCompiler();
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$compiler->setOptions([
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'sourceMap' => true,
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'sourceFile' => 'generated.scss',
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'sourceMapPath' => 'result-optimized.css.map',
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'includeSources' => true,
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'streamResult' => true // Enable streaming for large results
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]);
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return $compiler;
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},
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];
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// Results
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$results = [];
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foreach ($compilers as $name => $compilerFactory) {
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$start = microtime(true);
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$memStart = memory_get_peak_usage(true);
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try {
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$compiler = $compilerFactory();
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// For optimized version, use generator for large files if available
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if (str_contains($name, 'optimized') && method_exists($compiler, 'compileStringAsGenerator')) {
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$cssParts = [];
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foreach ($compiler->compileStringAsGenerator($scss) as $chunk) {
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$cssParts[] = $chunk;
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}
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$css = implode('', $cssParts);
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} else {
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$css = $compiler->compileString($scss);
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}
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// Handle source maps
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$mapFile = str_contains($name, 'optimized') ? 'result-optimized.css.map' : 'result-bugo-sass-embedded-php.css.map';
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if (file_exists($mapFile)) {
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$map = file_get_contents($mapFile);
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}
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$time = microtime(true) - $start;
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$memEnd = memory_get_peak_usage(true);
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$memUsed = ($memEnd - $memStart) / 1024 / 1024;
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$package = str_replace('/', '-', $name);
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$package = str_replace(['(', ')'], ['', ''], $package); // Remove parentheses for filename
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$package = str_replace(' ', '-', $package); // Replace spaces with dashes
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file_put_contents("result-$package.css", $css, LOCK_EX);
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$cssSize = filesize("result-$package.css") / 1024;
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$results[$name] = ['time' => $time, 'size' => $cssSize, 'memory' => $memUsed];
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echo "Compiler: $name, Time: " . number_format($time, 4) . " sec, Size: " . number_format($cssSize, 2) . " KB, Memory: " . number_format($memUsed, 2) . " MB" . PHP_EOL;
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} catch (Exception $e) {
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echo "General error in $name: " . $e->getMessage() . PHP_EOL;
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$results[$name] = ['time' => 'Error', 'size' => 'N/A', 'memory' => 'N/A'];
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}
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}
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// Output results in Markdown table format
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echo PHP_EOL . '## Performance Comparison with Process Caching' . PHP_EOL;
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// Test process caching performance
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echo "Testing process caching with multiple compilations..." . PHP_EOL;
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$numIterations = 5;
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$cacheTestResults = [];
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foreach ($compilers as $name => $compilerFactory) {
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$times = [];
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$memories = [];
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for ($i = 0; $i < $numIterations; $i++) {
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$start = microtime(true);
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$memStart = memory_get_peak_usage(true);
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try {
249+
$compiler = $compilerFactory();
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$css = $compiler->compileString($scss);
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$time = microtime(true) - $start;
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$memEnd = memory_get_peak_usage(true);
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$memUsed = ($memEnd - $memStart) / 1024 / 1024;
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$times[] = $time;
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$memories[] = $memUsed;
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} catch (Exception $e) {
259+
$times[] = 'Error';
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$memories[] = 'N/A';
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}
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}
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$avgTime = is_numeric($times[0]) ? array_sum($times) / count($times) : 'Error';
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$avgMemory = is_numeric($memories[0]) ? array_sum($memories) / count($memories) : 'N/A';
266+
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$cacheTestResults[$name] = [
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'avg_time' => $avgTime,
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'avg_memory' => $avgMemory,
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'iterations' => $numIterations
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];
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echo "Cached Compiler: $name, Avg Time: " . (is_numeric($avgTime) ? number_format($avgTime, 4) : $avgTime) . " sec, Avg Memory: " . (is_numeric($avgMemory) ? number_format($avgMemory, 2) : $avgMemory) . " MB" . PHP_EOL;
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}
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echo PHP_EOL . '## Results' . PHP_EOL;
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echo '| Compiler | Time (sec) | CSS Size (KB) | Memory (MB) |' . PHP_EOL;
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echo '|------------|-------------|---------------|-------------|' . PHP_EOL;
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foreach ($results as $name => $data) {
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$formatted = formatResultData($data);
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echo "| $name | {$formatted['time']} | {$formatted['size']} | {$formatted['memory']} |" . PHP_EOL;
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}
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// Now update the table
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$mdContent = file_get_contents('benchmark.md');
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// Add caching test results to markdown
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$cacheTable = PHP_EOL . '## Process Caching Performance (' . $numIterations . ' iterations)' . PHP_EOL;
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$cacheTable .= '| Compiler | Avg Time (sec) | Avg Memory (MB) |' . PHP_EOL;
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$cacheTable .= '|------------|----------------|----------------|' . PHP_EOL;
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foreach ($cacheTestResults as $name => $data) {
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$timeStr = is_numeric($data['avg_time']) ? number_format($data['avg_time'], 4) : $data['avg_time'];
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$memStr = is_numeric($data['avg_memory']) ? number_format($data['avg_memory'], 2) : $data['avg_memory'];
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$cacheTable .= "| $name | $timeStr | $memStr |" . PHP_EOL;
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}
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$tableStart = strpos($mdContent, '| Compiler');
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$tableOld = substr($mdContent, $tableStart);
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$newTable = "| Compiler | Time (sec) | CSS Size (KB) | Memory (MB) |\n|------------|-------------|---------------|-------------|\n";
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foreach ($results as $name => $data) {
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$formatted = formatResultData($data);
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$newTable .= "| $name | {$formatted['time']} | {$formatted['size']} | {$formatted['memory']} |\n";
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}
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$mdContent = str_replace($tableOld, $newTable, $mdContent);
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// Insert caching table before the note
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$notePos = strpos($mdContent, '*Note:');
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if ($notePos !== false) {
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$mdContent = substr_replace($mdContent, $cacheTable . PHP_EOL, $notePos, 0);
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} else {
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$mdContent .= $cacheTable;
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}
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$scssContent = file_get_contents('generated.scss');
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$mdContent .= "\n## Optimizations Implemented\n\n";
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$mdContent .= "- **Process Caching**: Node.js processes are cached and reused to avoid spawning overhead\n";
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$mdContent .= "- **Streaming for Large Data**: Input data is processed in chunks to prevent memory exhaustion\n";
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$mdContent .= "- **Reduced JSON Overhead**: Only necessary data is transmitted between PHP and Node.js\n";
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$mdContent .= "- **Generator Support**: Large compilation results can be processed chunk-by-chunk using generators\n";
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$mdContent .= "- **Memory Limits**: Automatic streaming activation for files larger than 1MB\n\n";
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$mdContent .= "*Note: These results are approximate. To get actual results, run `php benchmark.php` in the project root.*\n";
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file_put_contents('benchmark.md', $mdContent);

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