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Diffstat (limited to 'www/wiki/maintenance/benchmarks/bench_delete_truncate.php')
-rw-r--r-- | www/wiki/maintenance/benchmarks/bench_delete_truncate.php | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/www/wiki/maintenance/benchmarks/bench_delete_truncate.php b/www/wiki/maintenance/benchmarks/bench_delete_truncate.php new file mode 100644 index 00000000..794b743e --- /dev/null +++ b/www/wiki/maintenance/benchmarks/bench_delete_truncate.php @@ -0,0 +1,105 @@ +<?php +/** + * Benchmark SQL DELETE vs SQL TRUNCATE. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * http://www.gnu.org/copyleft/gpl.html + * + * @file + * @ingroup Benchmark + */ + +require_once __DIR__ . '/Benchmarker.php'; + +use Wikimedia\Rdbms\IDatabase; +use Wikimedia\Rdbms\IMaintainableDatabase; + +/** + * Maintenance script that benchmarks SQL DELETE vs SQL TRUNCATE. + * + * @ingroup Benchmark + */ +class BenchmarkDeleteTruncate extends Benchmarker { + protected $defaultCount = 10; + + public function __construct() { + parent::__construct(); + $this->addDescription( 'Benchmarks SQL DELETE vs SQL TRUNCATE.' ); + } + + public function execute() { + $dbw = $this->getDB( DB_MASTER ); + + $test = $dbw->tableName( 'test' ); + $dbw->query( "CREATE TABLE IF NOT EXISTS /*_*/$test ( + test_id int unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT, + text varbinary(255) NOT NULL +);" ); + + $this->bench( [ + 'Delete' => [ + 'setup' => function () use ( $dbw ) { + $this->insertData( $dbw ); + }, + 'function' => function () use ( $dbw ) { + $this->delete( $dbw ); + } + ], + 'Truncate' => [ + 'setup' => function () use ( $dbw ) { + $this->insertData( $dbw ); + }, + 'function' => function () use ( $dbw ) { + $this->truncate( $dbw ); + } + ] + ] ); + + $dbw->dropTable( 'test' ); + } + + /** + * @param IDatabase $dbw + * @return void + */ + private function insertData( $dbw ) { + $range = range( 0, 1024 ); + $data = []; + foreach ( $range as $r ) { + $data[] = [ 'text' => $r ]; + } + $dbw->insert( 'test', $data, __METHOD__ ); + } + + /** + * @param IDatabase $dbw + * @return void + */ + private function delete( $dbw ) { + $dbw->delete( 'text', '*', __METHOD__ ); + } + + /** + * @param IMaintainableDatabase $dbw + * @return void + */ + private function truncate( $dbw ) { + $test = $dbw->tableName( 'test' ); + $dbw->query( "TRUNCATE TABLE $test" ); + } +} + +$maintClass = BenchmarkDeleteTruncate::class; +require_once RUN_MAINTENANCE_IF_MAIN; |