maintenance/showCacheStats.php

   1 <?php
   2 /**
   3  * Show statistics from the cache.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 require_once __DIR__ . '/Maintenance.php';
  25
  26 /**
  27  * Maintenance script that shows statistics from the cache.
  28  *
  29  * @ingroup Maintenance
  30  */
  31 class ShowCacheStats extends Maintenance {
  32
  33         public function __construct() {
  34                 $this->mDescription = "Show statistics from the cache";
  35                 parent::__construct();
  36         }
  37
  38         public function getDbType() {
  39                 return Maintenance::DB_NONE;
  40         }
  41
  42         public function execute() {
  43                 global $wgMemc;
  44
  45                 // Can't do stats if
  46                 if ( get_class( $wgMemc ) == 'EmptyBagOStuff' ) {
  47                         $this->error( "You are running EmptyBagOStuff, I can not provide any statistics.", true );
  48                 }
  49                 $session = intval( $wgMemc->get( wfMemcKey( 'stats', 'request_with_session' ) ) );
  50                 $noSession = intval( $wgMemc->get( wfMemcKey( 'stats', 'request_without_session' ) ) );
  51                 $total = $session + $noSession;
  52                 if ( $total == 0 ) {
  53                         $this->error( "You either have no stats or the cache isn't running. Aborting.", true );
  54                 }
  55                 $this->output( "Requests\n" );
  56                 $this->output( sprintf( "with session:      %-10d %6.2f%%\n", $session, $session / $total * 100 ) );
  57                 $this->output( sprintf( "without session:   %-10d %6.2f%%\n", $noSession, $noSession / $total * 100 ) );
  58                 $this->output( sprintf( "total:             %-10d %6.2f%%\n", $total, 100 ) );
  59
  60
  61                 $this->output( "\nParser cache\n" );
  62                 $hits = intval( $wgMemc->get( wfMemcKey( 'stats', 'pcache_hit' ) ) );
  63                 $expired = intval( $wgMemc->get( wfMemcKey( 'stats', 'pcache_miss_expired' ) ) );
  64                 $absent = intval( $wgMemc->get( wfMemcKey( 'stats', 'pcache_miss_absent' ) ) );
  65                 $stub = intval( $wgMemc->get( wfMemcKey( 'stats', 'pcache_miss_stub' ) ) );
  66                 $total = $hits + $expired + $absent + $stub;
  67                 if ( $total ) {
  68                         $this->output( sprintf( "hits:              %-10d %6.2f%%\n", $hits, $hits / $total * 100 ) );
  69                         $this->output( sprintf( "expired:           %-10d %6.2f%%\n", $expired, $expired / $total * 100 ) );
  70                         $this->output( sprintf( "absent:            %-10d %6.2f%%\n", $absent, $absent / $total * 100 ) );
  71                         $this->output( sprintf( "stub threshold:    %-10d %6.2f%%\n", $stub, $stub / $total * 100 ) );
  72                         $this->output( sprintf( "total:             %-10d %6.2f%%\n", $total, 100 ) );
  73                 } else {
  74                         $this->output( "no statistics available\n" );
  75                 }
  76
  77                 $this->output( "\nImage cache\n" );
  78                 $hits = intval( $wgMemc->get( wfMemcKey( 'stats', 'image_cache_hit' ) ) );
  79                 $misses = intval( $wgMemc->get( wfMemcKey( 'stats', 'image_cache_miss' ) ) );
  80                 $updates = intval( $wgMemc->get( wfMemcKey( 'stats', 'image_cache_update' ) ) );
  81                 $total = $hits + $misses;
  82                 if ( $total ) {
  83                         $this->output( sprintf( "hits:              %-10d %6.2f%%\n", $hits, $hits / $total * 100 ) );
  84                         $this->output( sprintf( "misses:            %-10d %6.2f%%\n", $misses, $misses / $total * 100 ) );
  85                         $this->output( sprintf( "updates:           %-10d\n", $updates ) );
  86                 } else {
  87                         $this->output( "no statistics available\n" );
  88                 }
  89
  90                 $this->output( "\nDiff cache\n" );
  91                 $hits = intval( $wgMemc->get( wfMemcKey( 'stats', 'diff_cache_hit' ) ) );
  92                 $misses = intval( $wgMemc->get( wfMemcKey( 'stats', 'diff_cache_miss' ) ) );
  93                 $uncacheable = intval( $wgMemc->get( wfMemcKey( 'stats', 'diff_uncacheable' ) ) );
  94                 $total = $hits + $misses + $uncacheable;
  95                 if ( $total ) {
  96                         $this->output( sprintf( "hits:              %-10d %6.2f%%\n", $hits, $hits / $total * 100 ) );
  97                         $this->output( sprintf( "misses:            %-10d %6.2f%%\n", $misses, $misses / $total * 100 ) );
  98                         $this->output( sprintf( "uncacheable:       %-10d %6.2f%%\n", $uncacheable, $uncacheable / $total * 100 ) );
  99                 } else {
 100                         $this->output( "no statistics available\n" );
 101                 }
 102         }
 103 }
 104
 105 $maintClass = "ShowCacheStats";
 106 require_once RUN_MAINTENANCE_IF_MAIN;