Question

My questions in related to my another one:

Poor performance

In apache logs I have errors like this:

PHP Warning: SQLite3Stmt::execute(): Unable to execute statement: database is locked in /home/marek/devel/sf2/cities/vendor/symfony/src/Symfony/Component/HttpKernel/Profiler/SqliteProfilerStorage.php

I am using MySQL so why I am getting error about SQLite3?

Could someone help resolve this error?

[EDIT]

The only way of disabling profiler is:

public function __construct(ProfilerStorageInterface $storage, LoggerInterface $logger = null)
{
    $this->storage = $storage;
    $this->logger = $logger;
    $this->collectors = array();
    **$this->enabled = false;**
}

Answer 1

Symfony2 stores debug and profiling data in SQLite database (in {root}/app/cache/dev/profiler.db file) and seems like in dev mode you send a lot of requests and it locks SQLite database. If you want to test performance of your application – do not use DEV environment