Doctrine ORM Memory问题

时间:2013-03-22 14:09:06

标签: php memory symfony doctrine-orm

问题:

在运行使用以下Factory类中的Doctrine的守护进程服务时会出现内存问题。当守护进程服务启动时,它运行大约175MB。一天后它大约250MB,再多一天,它是400MB。我正在研究导致内存增加的原因以及如何将其降低。

我尝试过的事情:

  • $ EM->清除(); //这有点帮助
  • $ EM->关闭(); //这会导致问题
  • $ EM->的getConnection() - > getConfiguration() - > setSQLLogger(空);

    - env = prod应该处理setSQLLogger(null),对吗?

使用Doctrine 2.x和Symfony 2.1.x,我有什么办法可以帮助解决内存问题吗?

创建了一个处理连接的工厂

===================== START EMFactory =====================

<?php

namespace NS\Bundle\EMBundle;

use Doctrine\ORM\EntityManager;

class EMFactory
{
    /**
     * @var
     */
    private $container;

    /**
     * @param $container
     */
    public function __construct($container)
    {
        $this->container = $container;
    }

    /**
     * @return EntityManager
     */
    public function getBlahEntityManager()
    {
        return $this->getContainer()->get('doctrine.orm.blah_manager_entity_manager');
    }

    /**
     * @return EntityManager
     */
    public function getFooEntityManager()
    {
        return $this->getContainer()->get('doctrine.orm.foo_manager_entity_manager');
    }

    /**
     * @return EntityManager
     */
    public function getBarEntityManager()
    {
        return $this->getContainer()->get('doctrine.orm.bar_manager_entity_manager');
    }

    /**
     * @return mixed
     */
    public function getContainer()
    {
        return $this->container;
    }

    /**
     * @param $container
     * @return $this
     */
    public function setContainer($container)
    {
        $this->container = $container;
        return $this;
    }

    public function closeEntityManager(EntityManager $em)
    {
        try {
            $em->clear(); // This kinda helps
            //$em->close(); // this causes issues
            //$em->getConnection()->getConfiguration()->setSQLLogger(null); // --env=prod should take care of this
        } catch (\Exception $e) {
            // exception here
        }
    }
}

===================== END EMFactory =====================

我使用构造EMFactory的抽象类

=====================开始抽象类=====================

/**
 * @param \Symfony\Component\DependencyInjection\Container $container
 */
public function __construct(Container $container)
{
    $this->container = $container;
    $this->entityManagerFactory = new EMFactory($container);
}

===================== END抽象类=====================

以下是我如何使用EM的示例,该类扩展了上面的Abstract类

===================== START工作示例#1 =====================

// calling like this looks to be working as expected

$fooEM = $this->getEntityManagerFactory()->getFooEntityManager();

$barResults = $fooEM->getRepository('NS\Bundle\EMBundle\Entity\Bar')->findOneBy(array('id' => 1));

if (!is_object($barResults)) {
    throw new \Exception("Bar is a non object.");
}

// some logic here ...

$this->getEntityManagerFactory()->closeEntityManager($fooEM);

=====================结束工作示例#1 =====================

这是我如何使用EM的另一个例子,该类扩展了上面的Abstract类

=====================开始工作示例#2 =====================

// calling from functions like this

$fooEM = $this->getEntityManagerFactory()->getFooEntityManager();

$dql = 'SELECT b.*
        FROM NS\Bundle\EMBundle\Entity\Bar b            
        WHERE b.id = :id';

$query = $fooEM->createQuery($dql);
$query->setParameter('id', 1);

$barResults = $query->getResult();

$this->getEntityManagerFactory()->closeEntityManager($fooEM);

return $barResults;

===================== END工作示例#2 =====================

这是我如何使用EM的另一个例子,该类扩展了上面的Abstract类

=====================开始工作示例#3 =====================

// calling from functions like this

$fooEM = $this->getEntityManagerFactory()->getFooEntityManager();

$barEntity = new Bar();
$barEntity->setId(1);
$barEntity->setComment('this is foo-ie');

$fooEM->persist($barEntity);
$fooEM->flush();

$this->getEntityManagerFactory()->closeEntityManager($fooEM);

unset($barEntity);

===================== END工作示例#3 =====================

这些只是一些基本的例子,但只是查询变得更复杂。

有什么突出的说法,优化我?

2 个答案:

答案 0 :(得分:1)

您的问题可能来自您的实体经理的实例。如果你有一组特定的,你可能宁愿使用Symfony2依赖注入而不是调用容器。

每次使用访问器时,都会实例化一个新的实体管理器,因此消耗更多内存(因为它是一个守护进程,你永远不会真正释放它)。通过使用DI,您将始终拥有相同的实例。

你的EMFFactory应该是这样的:

<?php

namespace NS\Bundle\EMBundle;

use Doctrine\ORM\EntityManager;

class EMFactory
{
    /**
     * @var
     */
    private $fooEm;
    /**
     * @var
     */
    private $barEm;
    /**
     * @var
     */
    private $blahEm;

    /**
     * @param $fooEm
     * @param $barEm
     * @param $blahEm
     */
    public function __construct($fooEm, $barEm, $blahEm)
    {
        $this->fooEm = $fooEm;
        $this->barEm = $barEm;
        $this->blahEm = $blahEm;
    }

    /**
     * @return EntityManager
     */
    public function getBlahEntityManager()
    {
        return $this->blahEm;
    }

    /**
     * @return EntityManager
     */
    public function getFooEntityManager()
    {
        return $this->fooEm;
    }

    /**
     * @return EntityManager
     */
    public function getBarEntityManager()
    {
        return $this->barEm;
    }

    /**
     * @return mixed
     */
    public function getContainer()
    {
        return $this->container;
    }

    /**
     * @param $container
     * @return $this
     */
    public function setContainer($container)
    {
        $this->container = $container;
        return $this;
    }

    public function closeEntityManager(EntityManager $em)
    {
        try {
            $em->clear(); // This kinda helps
            //$em->close(); // this causes issues
            //$em->getConnection()->getConfiguration()->setSQLLogger(null); // --env=prod should take care of this
        } catch (\Exception $e) {
            // exception here
        }
    }
}

然后,调整您的服务定义,为您的配置提供各种EM,并将您的EMFactory定义为服务。

答案 1 :(得分:0)

这解决了我们遇到的连接问题。

需要关闭连接

public function closeEntityManager(EntityManager $em)
{
    try {
        $em->clear(); // This kinda helps
        $em->getConnection()->close(); // this seems to work            
    } catch (\Exception $e) {
        // exception here
    }
}