maintenance/storage/storageTypeStats.php

   1 <?php
   2
   3 require_once( dirname(__FILE__).'/../Maintenance.php' );
   4
   5 class StorageTypeStats extends Maintenance {
   6         function execute() {
   7                 $dbr = wfGetDB( DB_SLAVE );
   8
   9                 $endId = $dbr->selectField( 'text', 'MAX(old_id)', false, __METHOD__ );
  10                 if ( !$endId ) {
  11                         echo "No text rows!\n";
  12                         exit( 1 );
  13                 }
  14
  15                 $rangeStart = 0;
  16                 $binSize = intval( pow( 10, floor( log10( $endId ) ) - 3 ) );
  17                 if ( $binSize < 100 ) {
  18                         $binSize = 100;
  19                 }
  20                 echo "Using bin size of $binSize\n";
  21
  22                 $stats = array();
  23
  24                 $classSql = <<<SQL
  25                         IF(old_flags LIKE '%external%',
  26                                 IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+/[0-9a-f]{32}$',
  27                                         'CGZ pointer',
  28                                         IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+/[0-9]{1,6}$',
  29                                                 'DHB pointer',
  30                                                 IF(old_text REGEXP '^DB://[[:alnum:]]+/[0-9]+$',
  31                                                         'simple pointer',
  32                                                         'UNKNOWN pointer'
  33                                                 )
  34                                         )
  35                                 ),
  36                                 IF(old_flags LIKE '%object%',
  37                                         TRIM('"' FROM SUBSTRING_INDEX(SUBSTRING_INDEX(old_text, ':', 3), ':', -1)),
  38                                         '[none]'
  39                                 )
  40                         )
  41 SQL;
  42
  43                 for ( $rangeStart = 0; $rangeStart < $endId; $rangeStart += $binSize ) {
  44                         if ( $rangeStart / $binSize % 10 == 0 ) {
  45                                 echo "$rangeStart\r";
  46                         }
  47                         $res = $dbr->select(
  48                                 'text',
  49                                 array(
  50                                         'old_flags',
  51                                         "$classSql AS class",
  52                                         'COUNT(*) as count',
  53                                 ),
  54                                 array(
  55                                         'old_id >= ' . intval( $rangeStart ),
  56                                         'old_id < ' . intval( $rangeStart + $binSize )
  57                                 ),
  58                                 __METHOD__,
  59                                 array( 'GROUP BY' => 'old_flags, class' )
  60                         );
  61
  62                         foreach ( $res as $row ) {
  63                                 $flags = $row->old_flags;
  64                                 if ( $flags === '' ) {
  65                                         $flags = '[none]';
  66                                 }
  67                                 $class = $row->class;
  68                                 $count = $row->count;
  69                                 if ( !isset( $stats[$flags][$class] ) ) {
  70                                         $stats[$flags][$class] = array(
  71                                                 'count' => 0,
  72                                                 'first' => $rangeStart,
  73                                                 'last' => 0
  74                                         );
  75                                 }
  76                                 $entry =& $stats[$flags][$class];
  77                                 $entry['count'] += $count;
  78                                 $entry['last'] = max( $entry['last'], $rangeStart + $binSize );
  79                                 unset( $entry );
  80                         }
  81                 }
  82                 echo "\n\n";
  83
  84                 $format = "%-29s %-39s %-19s %-29s\n";
  85                 printf( $format, "Flags", "Class", "Count", "old_id range" );
  86                 echo str_repeat( '-', 120 ) . "\n";
  87                 foreach ( $stats as $flags => $flagStats ) {
  88                         foreach ( $flagStats as $class => $entry ) {
  89                                 printf( $format, $flags, $class, $entry['count'],
  90                                         sprintf( "%-13d - %-13d", $entry['first'], $entry['last'] ) );
  91                         }
  92                 }
  93         }
  94 }
  95
  96 $maintClass = 'StorageTypeStats';
  97 require_once( DO_MAINTENANCE );
  98