1. Home
  2. Documentation
  3. Logging
  4. How to Disable Microseconds Precision (for a Performance Boost)
WARNING: You are browsing the documentation for Symfony 3.0 which is not maintained anymore. Consider upgrading your projects to Symfony 5.1.

How to Disable Microseconds Precision (for a Performance Boost)

3.0 version
Maintained
3.4
Unmaintained
2.7 2.8 3.1 3.2 3.3

How to Disable Microseconds Precision (for a Performance Boost)ΒΆ

New in version 2.11: The use_microseconds option was introduced in MonologBundle 2.11.

Setting the parameter use_microseconds to false forces the logger to reduce the precision in the datetime field of the log messages from microsecond to second, avoiding a call to the microtime(true) function and the subsequent parsing. Disabling the use of microseconds can provide a small performance gain speeding up the log generation. This is recommended for systems that generate a large number of log events.

  • YAML
    1
2
3
4
5
6
7
8
    # app/config/config.yml
monolog:
    use_microseconds: false
    handlers:
        applog:
            type: stream
            path: /var/log/symfony.log
            level: error
  • XML
     1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
    <!-- app/config/config.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<container xmlns="http://symfony.com/schema/dic/services"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:monolog="http://symfony.com/schema/dic/monolog"
    xsi:schemaLocation="http://symfony.com/schema/dic/services
        http://symfony.com/schema/dic/services/services-1.0.xsd
        http://symfony.com/schema/dic/monolog
        http://symfony.com/schema/dic/monolog/monolog-1.0.xsd">

    <monolog:config use_microseconds="false">
        <monolog:handler
            name="applog"
            type="stream"
            path="/var/log/symfony.log"
            level="error"
        />
    </monolog:config>
</container>
  • PHP
     1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
    // app/config/config.php
$container->loadFromExtension('monolog', array(
    'use_microseconds' => false,
    'handlers' => array(
        'applog' => array(
            'type'  => 'stream',
            'path'  => '/var/log/symfony.log',
            'level' => 'error',
        ),
    ),
));

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.