55 lines
1.6 KiB
PHP
55 lines
1.6 KiB
PHP
<?php
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require_once __DIR__ . '/../includes/Benchmarker.php';
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/**
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* Maintenance script that benchmarks TRUNCATE versus DELETE queries.
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*
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* @ingroup Benchmark
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*/
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class BenchmarkTruncate extends Benchmarker {
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public function execute() {
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$fname = __METHOD__;
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$dbw = $this->getDB( DB_PRIMARY );
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$dbw->dropTable( 'benchmark_perm_test' );
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$permTable = $dbw->tableName( 'benchmark_perm_test', 'raw' );
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$dbw->duplicateTableStructure(
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$dbw->tableName( 'page', 'raw' ),
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$permTable,
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false,
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$fname
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);
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$dbw->dropTable( 'benchmark_temp_test' );
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$tempTable = $dbw->tableName( 'benchmark_temp_test', 'raw' );
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$dbw->duplicateTableStructure(
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$dbw->tableName( 'page', 'raw' ),
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$tempTable,
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true,
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$fname
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);
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$this->bench( [
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'perm truncate' => static function () use ( $dbw, $fname, $permTable ) {
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$dbw->query( "TRUNCATE $permTable", $fname );
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},
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'perm delete' => static function () use ( $dbw, $fname, $permTable ) {
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$dbw->query( "DELETE FROM $permTable", $fname );
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},
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'temp truncate' => static function () use ( $dbw, $fname, $tempTable ) {
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// Use a raw query not truncate() to avoid the "pristine" check.
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// The other cases also use query() so that they will have comparable overhead.
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$dbw->query( "TRUNCATE $tempTable", $fname );
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},
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'temp delete' => static function () use ( $dbw, $fname, $tempTable ) {
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$dbw->query( "DELETE FROM $tempTable", $fname );
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}
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] );
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$dbw->dropTable( 'benchmark_perm_test', $fname );
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$dbw->dropTable( 'benchmark_temp_test', $fname );
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}
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}
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$maintClass = BenchmarkTruncate::class;
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require_once RUN_MAINTENANCE_IF_MAIN;
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