maintenance/benchmarks/benchmarkLruHash.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  * @ingroup Benchmark
  20  */
  21
  22 require_once __DIR__ . '/Benchmarker.php';
  23
  24 /**
  25  * Maintenance script that benchmarks HashBagOStuff and MapCacheLRU.
  26  *
  27  * @ingroup Benchmark
  28  */
  29 class BenchmarkLruHash extends Benchmarker {
  30         protected $defaultCount = 1000;
  31
  32         public function __construct() {
  33                 parent::__construct();
  34                 $this->addDescription( 'Benchmarks HashBagOStuff and MapCacheLRU.' );
  35                 $this->addOption( 'construct', 'Run construct only', false, false );
  36                 $this->addOption( 'fill', 'Run fill only', false, false );
  37         }
  38
  39         public function execute() {
  40                 $exampleKeys = [];
  41                 $max = 100;
  42                 $count = 500;
  43                 while ( $count-- ) {
  44                         $exampleKeys[] = wfRandomString();
  45                 }
  46                 // 1000 keys (1...500, 500...1)
  47                 $keys = array_merge( $exampleKeys, array_reverse( $exampleKeys ) );
  48
  49                 $fill = $this->hasOption( 'fill' ) || !$this->hasOption( 'construct' );
  50                 $construct = $this->hasOption( 'construct' ) || !$this->hasOption( 'fill' );
  51                 $benches = [];
  52
  53                 if ( $construct ) {
  54                         $benches['HashBagOStuff-construct'] = [
  55                                 'function' => function () use ( $max ) {
  56                                         $obj = new HashBagOStuff( [ 'maxKeys' => $max ] );
  57                                 },
  58                         ];
  59                         $benches['MapCacheLRU-construct'] = [
  60                                 'function' => function () use ( $max ) {
  61                                         $obj = new MapCacheLRU( $max );
  62                                 },
  63                         ];
  64                 }
  65
  66                 if ( $fill ) {
  67                         // For the fill bechmark, ensure object creation is not measured.
  68                         $hObj = null;
  69                         $benches['HashBagOStuff-fill'] = [
  70                                 'setup' => function () use ( &$hObj, $max ) {
  71                                         $hObj = new HashBagOStuff( [ 'maxKeys' => $max ] );
  72                                 },
  73                                 'function' => function () use ( &$hObj, &$keys ) {
  74                                         foreach ( $keys as $i => $key ) {
  75                                                 $hObj->set( $key, $i );
  76                                         }
  77                                 }
  78                         ];
  79                         $mObj = null;
  80                         $benches['MapCacheLRU-fill'] = [
  81                                 'setup' => function () use ( &$mObj, $max ) {
  82                                         $mObj = new MapCacheLRU( $max );
  83                                 },
  84                                 'function' => function () use ( &$mObj, &$keys ) {
  85                                         foreach ( $keys as $i => $key ) {
  86                                                 $mObj->set( $key, $i );
  87                                         }
  88                                 }
  89                         ];
  90                 }
  91
  92                 $this->bench( $benches );
  93         }
  94 }
  95
  96 $maintClass = BenchmarkLruHash::class;
  97 require_once RUN_MAINTENANCE_IF_MAIN;