1. 2011-02-10
(@tsatoppejp)

2. • :
•twitter: tsatoppejp
•Facebook: tsatoppejp
• : 2006 2010

4. The More with symfony book
...
ORM
Propel Doctrine
PHP
PHP5.3

5. Doctrine
...
5.2.5 PHP
Doctrine
PHP

6. ...
• PHP (PHP5.3 )
• Doctrine
• Doctrine ( )

7. $a = new stdClass();
$a->self = $a;
// $a refcount 2 1 a ( )
unset($a);
// $a refcount 1
// $a (PHP5.3 )

8. Doctrine free()
$a = new stdClass();
$a->self = $a;
$a->self = null;
// unset()
unset($a);
// $a refcount 0
// $a
// Doctrine free()

9. Doctrine
• 4682 Symfony1.4.3 task sfDoctrinePager 100
• Doctrine::HYDRATE_ARRAY( )
• PHP PHP 5.2.14 PHP 5.3.5
• AWS EC2 small instance(32 1.7 GB 1 160GB )

10. Doctrine
$pager = new sfDoctrinePager('User', 100);
$q = Doctrine_Query::create()->from('User u');
$pager->setPage(1);
$pager->setQuery($q);
$pager->init();
while ($pager->getResults()->count()) {
foreach ($pager->getResults() as $user) {
$user_id = $user->getId();
// foreach ($pager->getResults(Doctrine::HYDRATE_ARRAY) as $user) {
// $user_id = $user[‘id’];
}
$page = $pager->getPage();
$page++;
$pager->setPage($page);
...
}

11. Doctrine
40000000
PHP5.2.14 Object
PHP5.2.14 Object free()
PHP5.2.14 Array
PHP5.3.5 Object
PHP5.3.5 Object free()
PHP5.3.5 Array
30000000
20000000
10000000
0
100 300 500 700 900 1100 1300 1500 1700 1900 2100 2300 2500 2700 2900 3100 3300 3500 3700 3900 4100 4300 4500 4700

12. Doctrine
PHP5.2.14 Object 7.498278141
PHP5.2.14 Object free() 8.2011160851
PHP5.2.14 Array 6.247120142
PHP5.3.5 Object 7.4590570927
PHP5.3.5 Object free() 7.5311901569
PHP5.3.5 Array 5.9629459381
0 2.25 4.50 6.75 9.00
( )

13. • $user->free()
• Doctrine::HYDRATE_ARRAY( )
Doctrine::HYDRATE_ARRAY
( )
• $user->free() unset($user) gc_collect_cycles() Doctrine1
PHP5.2 5.3

14. Doctrine2
$dql = "SELECT u FROM EntitiesUser u";
$query = $em->createQuery($dql);
$iterableResult = $query->iterate();
$i = 0;
foreach($iterableResult AS $row) { // PDOStatement::fetch()
$user_id = $row[0]->getId();
...
if ($i % 150 == 0) {
$em->flush();
$em->clear();
}
$i++;
}

15. Doctrine2
15000000
Doctrine2
Doctrine2 clear()
11250000
7500000
3750000
0
100 300 500 700 900 1100 1300 1500 1700 1900 2100 2300 2500 2700 2900 3100 3300 3500 3700 3900 4100 4300 4500 4700

16. Doctrine2
Doctrine2 2.8972089291
Doctrine2 clear() 2.8944861889
0.003
2.89300 2.89425 2.89550 2.89675 2.89800
( )

17. 40000000
PHP5.2.14 Object
PHP5.2.14 Object free()
PHP5.2.14 Array
PHP5.3.5 Object
PHP5.3.5 Object free()
PHP5.3.5 Array
Doctrine2
Doctrine2 clear()
30000000
20000000
10000000
0
100 300 500 700 900 1100 1300 1500 1700 1900 2100 2300 2500 2700 2900 3100 3300 3500 3700 3900 4100 4300 4500 4700

18. PHP5.2.14 Object 7.498278141
PHP5.2.14 Object free() 8.2011160851
PHP5.2.14 Array 6.247120142
PHP5.3.5 Object 7.4590570927
PHP5.3.5 Object free() 7.5311901569
PHP5.3.5 Array 5.9629459381
Doctrine2 2.8972089291
Doctrine2 clear() 2.8944861889
0 2.25 4.50 6.75 9.00
( )

19. • Doctrine1 PHP5.3
• Doctrine1 select free()
• Doctrine2 clear() (
)
• Doctrine2

20. Doctrine1
$pager = new sfDoctrinePager('User', 100);
$q = Doctrine_Query::create()->from('User u');
$pager->setPage(1);
$pager->setQuery($q);
$pager->init();
while ($pager->getResults()->count()) {
foreach ($pager->getResults() as $user) {
$command = sprintf(“/path/to/symfony execute:task %d”, $user->getId());
`$command`; //
$user->free();
}
$page = $pager->getPage();
$page++;
$pager->setPage($page);
...
}