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<?php
/**
* Show statistics from the cache.
*
* 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 Maintenance
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script that shows statistics from the cache.
*
* @ingroup Maintenance
*/
class ShowCacheStats 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 = "ShowCacheStats";
require_once RUN_MAINTENANCE_IF_MAIN;
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