Benchmark w PHP, benchmark, ale nie profiler Opcje

[q.michal]

Hello,

Dzis przedstawiam na szybko napisane 3 metody do testowania wydajnosci CPU, operacji I/O oraz bazy danych.
Kazda metoda zwraca przyznane punkty w formie INTa. Oczywiscie im wiecej tym lepiej.

Uwagi odnosnie tej jakze nikomu niepotrzebnej klasie jak zwykle mile widziane

Klasa:

[PHP] pobierz, plaintext 
<?php
 
final class Benchmark {
 
	/**
	 * Benchmarks CPU and returns performance score
	 *
	 * @return	integer		CPU performance score
	 */
	public static function getCPUScore() {
		$k = 0;
		$result = [];
		for($i = 0; $i < 25; $i++) {
			$start = System::getMiroTime();
			for($j = 0; $j < 1000000; $j++) {
			}
			$loop1 = System::getMiroTime() - $start;
			$start = System::getMiroTime();
			for($j = 0; $j < 1000000; $j++) {
				$k++;
				$k--;
				$k++;
				$k--;
			}
			$loop2 = System::getMiroTime() - $start;
			if ($loop2 > $loop1)
				$result[] = 1 / ($loop2 - $loop1);
		}
		if(count($result)) {
			return (int) round(array_sum($result) / doubleval(count($result)));
		} else {
			return 0;
		}
	}
 
	/**
	 * Benchmarks database and returns performance score
	 *
	 * @param	object		database object
	 * @return	integer		database operations score
	 * @throws	exception	if database connection or SQL query fails
	 */
	public static function getDatabaseScore($database) {
		if(!is_a($database, 'Platform\\Database') || !$database->isConnected()) {
			throw new \Exception('No connection to database');
		}
		try {
			$database->setQuery('DELETE FROM #__performance');
			$database->execute();
		} catch(\PDOException $e) {
			throw new \Exception('Unable to truncate #__performance table');
		}
		$result = [];
		for($i = 0; $i < 25; $i++) {
			$start = System::getMiroTime();
			for($j = 0; $j < 10; $j++) {
				str_repeat('xyz', 66);
			}
			$loop1 = System::getMiroTime() - $start;
			$start = System::getMiroTime();
			for($j = 0; $j < 10; $j++) {
				try {
					$database->setQuery('INSERT INTO #__performance(ID, REF_ID, NAME) VALUES (?, ?, ?)');
					$database->execute([NULL, $j, str_repeat('xyz', 66)]);
					$database->setQuery('SELECT * FROM #__performance WHERE REF_ID = ?');
					$database->execute([$j]);
					$database->fetchRow();
				} catch(\PDOException $e) {
					throw new \Exception('Query execution failed during database benchmark');
				}
			}
			$loop2 = System::getMiroTime() - $start;
			if($loop2 > $loop1) {
				$result[] = 100 / ($loop2 - $loop1);
			}
		}
		if(count($result)) {
			return (int) round(array_sum($result) / doubleval(count($result)));
		} else {
			return 0;
		}
	}
 
	/**
	 * Benchmarks I/O operations and returns performance score
	 *
	 * @param	string		path to directory where temporary files necessary for test will be created
	 * @return	integer		I/O operations performance score
	 */
	public static function getIOScore($tempdir = '.') {
		$result = [];
		$testfile = $tempdir . '/io_benchmark_#N#.dat';
		$content = '<?php /*' . str_repeat('I/O Benchmark. ', 1024) . '*/ ?>';
		for($i = 0; $i < 25; $i++) {
			$start = System::getMiroTime();
			for($j = 0; $j < 1000; $j++) {
				str_replace("#N#", $j, $testfile);
			}
			$loop1 = System::getMiroTime() - $start;
			$start = System::getMiroTime();
			for($j = 0; $j < 1000; $j++) {
				$file = str_replace("#N#", $j, $testfile);
				file_put_contents($file, $content, LOCK_EX);
				require($file);
				unlink($file);
			}
			$loop2 = System::getMiroTime() - $start;
			if($loop2 > $loop1)
				$result[] = 1000 / ($loop2 - $loop1);
		}
		if(count($result)) {
			return (int) round(array_sum($result) / doubleval(count($result)));
		} else {
			return 0;
		}
	}
 
} /* class */
[PHP] pobierz, plaintext 

Przyklad uzycia:

[PHP] pobierz, plaintext 
<?php
 
try {
        $database = \Platform\Database::getInstance();
        $database->connect('sqlite:tests/data/database.qdb', NULL, NULL, 'test_');
        $database->setQuery('CREATE TABLE IF NOT EXISTS #__performance(`ID` INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, `REF_ID` INTEGER DEFAULT NULL, `NAME` varchar(200) DEFAULT NULL)');
        $database->execute();
}
catch(\PDOException $e) {
        die('Something went wrong!');
}
 
var_dump(\Platform\Benchmark::getCPUScore());
var_dump(\Platform\Benchmark::getDatabaseScore($database));
var_dump(\Platform\Benchmark::getIOScore('.'));
[PHP] pobierz, plaintext 

Wyniki:

Kod

int(187)
int(153)
int(1224)

Ten post edytował q.michal 16.06.2017, 15:04:39

[q.michal]

Tak, wiem
Skupilem sie wylacznie na funkcjonalnosci i jak napisalem w 1 poscie, jest to kod napisany na szybko.
Moze ktos znajdzie dla niego zastosowanie / natchnienie we wlasnym projekcie.


edit: Zauwazylem 'drobna literowke'. Drobna, bo zjadlem zero, a zmienia diametralnie wynik.
W linii 109 bylo:
$result[] = 100 / ($loop2 - $loop1);

a powinno byc:
$result[] = 1000 / ($loop2 - $loop1);

Ten post edytował q.michal 16.06.2017, 15:04:22