在循环中执行 Doctrine 查询时出现内存泄漏 [英] Memory leak when executing Doctrine query in loop

问题描述

我在查找脚本中内存泄漏的原因时遇到了麻烦.我有一个简单的存储库方法，它将实体中的计数"列增加 X 量:

I'm having trouble in locating the cause for a memory leak in my script. I have a simple repository method which increments a 'count' column in my entity by X amount:

public function incrementCount($id, $amount)
{
    $query = $this
        ->createQueryBuilder('e')
        ->update('MyEntity', 'e')
        ->set('e.count', 'e.count + :amount')
        ->where('e.id = :id')
        ->setParameter('id', $id)
        ->setParameter('amount', $amount)
        ->getQuery();

    $query->execute();
}

问题是，如果我在循环中调用它，每次迭代时内存使用量都会增加:

Problem is, if I call this in a loop the memory usage balloons on every iteration:

$entityManager = $this->getContainer()->get('doctrine')->getManager();
$myRepository = $entityManager->getRepository(MyEntity::class);
while (true) {
    $myRepository->incrementCount("123", 5);
    $doctrineManager->clear();
    gc_collect_cycles();
}

我在这里错过了什么?我已经尝试过 ->clear()，根据 Doctrine 的 关于批处理的建议.我什至尝试过 gc_collect_cycles()，但问题仍然存在.

What am I missing here? I've tried ->clear(), as per Doctrine's advice on batch processing. I even tried gc_collect_cycles(), but still the issue remains.

我在 PHP 5.5 上运行 Doctrine 2.4.6.

I'm running Doctrine 2.4.6 on PHP 5.5.

推荐答案

我通过在命令中添加 --no-debug 解决了这个问题.事实证明，在调试模式下，分析器将有关每个查询的信息存储在内存中.

I resolved this by adding --no-debug to my command. It turns out that in debug mode, the profiler was storing information about every single query in memory.

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