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<?php
/**
* Makes several 'set', 'incr' and 'get' requests on every memcached
* server and shows a report.
*
* 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
*/
use MediaWiki\MainConfigNames;
use MediaWiki\Maintenance\Maintenance;
use Wikimedia\ObjectCache\BagOStuff;
// @codeCoverageIgnoreStart
require_once __DIR__ . '/Maintenance.php';
// @codeCoverageIgnoreEnd
/**
* Maintenance script that makes several 'set', 'incr' and 'get' requests
* on every memcached server and shows a report.
*
* @ingroup Maintenance
*/
class McTest extends Maintenance {
public function __construct() {
parent::__construct();
$this->addDescription(
"Makes several operation requests on every cache server and shows a report.\n" .
"This tests both per-key and batched *Multi() methods as well as WRITE_BACKGROUND.\n" .
"\"IB\" means \"immediate blocking\" and \"DB\" means \"deferred blocking.\""
);
$this->addOption( 'cache', 'Use servers from this $wgObjectCaches store', true, true );
$this->addOption( 'class', 'Override the store "class" parameter', false, true );
$this->addOption( 'i', 'Number of iterations', false, true );
$this->addArg( 'server[:port]', 'Cache server to test, with optional port', false );
}
public function execute() {
$config = $this->getConfig();
$objectCaches = $config->get( MainConfigNames::ObjectCaches );
$cacheType = $this->getOption( 'cache', $config->get( MainConfigNames::MainCacheType ) );
$iterations = $this->getOption( 'i', 100 );
$classOverride = $this->getOption( 'class' );
$server = $this->getArg( 0 );
if ( !isset( $objectCaches[$cacheType] ) ) {
$this->fatalError( "No configured '$cacheType' cache" );
}
if ( $classOverride !== null ) {
if ( !is_subclass_of( $classOverride, BagOStuff::class ) ) {
$this->fatalError( "Invalid class '$classOverride' for cache" );
}
$class = $classOverride;
} else {
$class = $objectCaches[$cacheType]['class'];
}
if ( $server !== null ) {
$servers = [ $server ];
} else {
// Note that some caches, like apcu, do not have a server list
$servers = $objectCaches[$cacheType]['servers'] ?? [ null ];
}
// Use longest server string for output alignment
$maxSrvLen = max( array_map( 'strlen', $servers ) );
$this->output( "Warming up connections to cache servers..." );
/** @var BagOStuff[] $cacheByServer */
$cacheByServer = [];
foreach ( $servers as $server ) {
$conf = $objectCaches[$cacheType];
if ( $server !== null ) {
$conf['servers'] = [ $server ];
$host = $server;
} else {
$host = 'localhost';
}
$cacheByServer[$host] = new $class( $conf );
$cacheByServer[$host]->get( 'key' );
}
$this->output( "done\n" );
$this->output( "Single and batched operation profiling/test results:\n" );
$valueByKey = [];
for ( $i = 1; $i <= $iterations; $i++ ) {
$valueByKey["test$i"] = 'S' . str_pad( (string)$i, 2048 );
}
foreach ( $cacheByServer as $host => $mcc ) {
$this->output( str_pad( $host, $maxSrvLen ) . "\n" );
$this->benchmarkSingleKeyOps( $mcc, $valueByKey );
$this->benchmarkMultiKeyOpsImmediateBlocking( $mcc, $valueByKey );
$this->benchmarkMultiKeyOpsDeferredBlocking( $mcc, $valueByKey );
}
}
private function benchmarkSingleKeyOps( BagOStuff $mcc, array $valueByKey ) {
$add = 0;
$set = 0;
$incr = 0;
$get = 0;
$delete = 0;
$keys = array_keys( $valueByKey );
$count = count( $valueByKey );
// Clear out any old values
$mcc->deleteMulti( $keys );
$time_start = microtime( true );
foreach ( $valueByKey as $key => $value ) {
if ( $mcc->add( $key, $value ) ) {
$add++;
}
}
$addMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$time_start = microtime( true );
foreach ( $valueByKey as $key => $value ) {
if ( $mcc->set( $key, $value ) ) {
$set++;
}
}
$setMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$time_start = microtime( true );
foreach ( $valueByKey as $key => $value ) {
if ( $mcc->get( $key ) === $value ) {
$get++;
}
}
$getMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$time_start = microtime( true );
foreach ( $keys as $key ) {
if ( $mcc->delete( $key ) ) {
$delete++;
}
}
$delMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$time_start = microtime( true );
foreach ( $keys as $index => $key ) {
if ( $mcc->incrWithInit( $key, $mcc::TTL_INDEFINITE, $index ) === $index ) {
$incr++;
}
}
$incrMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$this->output(
" add: $add/$count {$addMs}ms " .
"set: $set/$count {$setMs}ms " .
"get: $get/$count ({$getMs}ms) " .
"delete: $delete/$count ({$delMs}ms) " .
"incr: $incr/$count ({$incrMs}ms)\n"
);
}
private function benchmarkMultiKeyOpsImmediateBlocking( BagOStuff $mcc, array $valueByKey ) {
$keys = array_keys( $valueByKey );
$iterations = count( $valueByKey );
$time_start = microtime( true );
$mSetOk = $mcc->setMulti( $valueByKey ) ? '✓' : '✗';
$mSetMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$time_start = microtime( true );
$found = $mcc->getMulti( $keys );
$mGetMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$mGetOk = 0;
foreach ( $found as $key => $value ) {
$mGetOk += ( $value === $valueByKey[$key] );
}
$time_start = microtime( true );
$mChangeTTLOk = $mcc->changeTTLMulti( $keys, 3600 ) ? '✓' : '✗';
$mChangeTTTMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$time_start = microtime( true );
$mDelOk = $mcc->deleteMulti( $keys ) ? '✓' : '✗';
$mDelMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$this->output(
" setMulti (IB): $mSetOk {$mSetMs}ms " .
"getMulti (IB): $mGetOk/$iterations {$mGetMs}ms " .
"changeTTLMulti (IB): $mChangeTTLOk {$mChangeTTTMs}ms " .
"deleteMulti (IB): $mDelOk {$mDelMs}ms\n"
);
}
private function benchmarkMultiKeyOpsDeferredBlocking( BagOStuff $mcc, array $valueByKey ) {
$keys = array_keys( $valueByKey );
$iterations = count( $valueByKey );
$flags = $mcc::WRITE_BACKGROUND;
$time_start = microtime( true );
$mSetOk = $mcc->setMulti( $valueByKey, 0, $flags ) ? '✓' : '✗';
$mSetMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$time_start = microtime( true );
$found = $mcc->getMulti( $keys );
$mGetMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$mGetOk = 0;
foreach ( $found as $key => $value ) {
$mGetOk += ( $value === $valueByKey[$key] );
}
$time_start = microtime( true );
$mChangeTTLOk = $mcc->changeTTLMulti( $keys, 3600, $flags ) ? '✓' : '✗';
$mChangeTTTMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$time_start = microtime( true );
$mDelOk = $mcc->deleteMulti( $keys, $flags ) ? '✓' : '✗';
$mDelMs = intval( 1e3 * ( microtime( true ) - $time_start ) );
$this->output(
" setMulti (DB): $mSetOk {$mSetMs}ms " .
"getMulti (DB): $mGetOk/$iterations {$mGetMs}ms " .
"changeTTLMulti (DB): $mChangeTTLOk {$mChangeTTTMs}ms " .
"deleteMulti (DB): $mDelOk {$mDelMs}ms\n"
);
}
}
// @codeCoverageIgnoreStart
$maintClass = McTest::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd