stats.php

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<?php
require_once( dirname( __FILE__ ) . '/Maintenance.php' );

class CacheStats extends Maintenance {

        public function __construct() {
                $this->mDescription = "Show statistics from the cache";
                parent::__construct();
        }

        public function getDbType() {
                return Maintenance::DB_NONE;
        }

        public function execute() {
                global $wgMemc;

                // Can't do stats if
                if ( get_class( $wgMemc ) == 'EmptyBagOStuff' ) {
                        $this->error( "You are running EmptyBagOStuff, I can not provide any statistics.", true );
                }
                $session = intval( $wgMemc->get( wfMemcKey( 'stats', 'request_with_session' ) ) );
                $noSession = intval( $wgMemc->get( wfMemcKey( 'stats', 'request_without_session' ) ) );
                $total = $session + $noSession;
                if ( $total == 0 ) {
                        $this->error( "You either have no stats or the cache isn't running. Aborting.", true );
                }
                $this->output( "Requests\n" );
                $this->output( sprintf( "with session:      %-10d %6.2f%%\n", $session, $session / $total * 100 ) );
                $this->output( sprintf( "without session:   %-10d %6.2f%%\n", $noSession, $noSession / $total * 100 ) );
                $this->output( sprintf( "total:             %-10d %6.2f%%\n", $total, 100 ) );


                $this->output( "\nParser cache\n" );
                $hits = intval( $wgMemc->get( wfMemcKey( 'stats', 'pcache_hit' ) ) );
                $expired = intval( $wgMemc->get( wfMemcKey( 'stats', 'pcache_miss_expired' ) ) );
                $absent = intval( $wgMemc->get( wfMemcKey( 'stats', 'pcache_miss_absent' ) ) );
                $stub = intval( $wgMemc->get( wfMemcKey( 'stats', 'pcache_miss_stub' ) ) );
                $total = $hits + $expired + $absent + $stub;
                if ( $total ) {
                        $this->output( sprintf( "hits:              %-10d %6.2f%%\n", $hits, $hits / $total * 100 ) );
                        $this->output( sprintf( "expired:           %-10d %6.2f%%\n", $expired, $expired / $total * 100 ) );
                        $this->output( sprintf( "absent:            %-10d %6.2f%%\n", $absent, $absent / $total * 100 ) );
                        $this->output( sprintf( "stub threshold:    %-10d %6.2f%%\n", $stub, $stub / $total * 100 ) );
                        $this->output( sprintf( "total:             %-10d %6.2f%%\n", $total, 100 ) );
                } else {
                        $this->output( "no statistics available\n" );
                }

                $this->output( "\nImage cache\n" );
                $hits = intval( $wgMemc->get( wfMemcKey( 'stats', 'image_cache_hit' ) ) );
                $misses = intval( $wgMemc->get( wfMemcKey( 'stats', 'image_cache_miss' ) ) );
                $updates = intval( $wgMemc->get( wfMemcKey( 'stats', 'image_cache_update' ) ) );
                $total = $hits + $misses;
                if ( $total ) {
                        $this->output( sprintf( "hits:              %-10d %6.2f%%\n", $hits, $hits / $total * 100 ) );
                        $this->output( sprintf( "misses:            %-10d %6.2f%%\n", $misses, $misses / $total * 100 ) );
                        $this->output( sprintf( "updates:           %-10d\n", $updates ) );
                } else {
                        $this->output( "no statistics available\n" );
                }

                $this->output( "\nDiff cache\n" );
                $hits = intval( $wgMemc->get( wfMemcKey( 'stats', 'diff_cache_hit' ) ) );
                $misses = intval( $wgMemc->get( wfMemcKey( 'stats', 'diff_cache_miss' ) ) );
                $uncacheable = intval( $wgMemc->get( wfMemcKey( 'stats', 'diff_uncacheable' ) ) );
                $total = $hits + $misses + $uncacheable;
                if ( $total ) {
                        $this->output( sprintf( "hits:              %-10d %6.2f%%\n", $hits, $hits / $total * 100 ) );
                        $this->output( sprintf( "misses:            %-10d %6.2f%%\n", $misses, $misses / $total * 100 ) );
                        $this->output( sprintf( "uncacheable:       %-10d %6.2f%%\n", $uncacheable, $uncacheable / $total * 100 ) );
                } else {
                        $this->output( "no statistics available\n" );
                }
        }
}

$maintClass = "CacheStats";
require_once( RUN_MAINTENANCE_IF_MAIN );