What `memory_limit` does Magento 2 set?

dmitry_fedyuk · March 30, 2016, 3:11pm

Magento 2 sets its memory_limit to 768 megabytes:

The Composer library raises its memory limit up to 1 gigabyte:

composer/composer/blob/1.0.0-beta1/bin/composer#L34-L38


$memoryLimit = trim(ini_get('memory_limit'));
// Increase memory_limit if it is lower than 1GB
if ($memoryLimit != -1 && $memoryInBytes($memoryLimit) < 1024 * 1024 * 1024) {
    @ini_set('memory_limit', '1G');
}

dmitry_fedyuk · March 30, 2016, 3:17pm

See also:

dmitry_fedyuk · November 14, 2016, 8:49pm

From now on, Magento 2 requires 2GB of RAM: http://devdocs.magento.com/guides/v2.0/install-gde/system-requirements-2.0-tech.html#memory-requirement

Upgrading the Magento applications and extensions you obtain from Magento Marketplaces and other sources can require up to 2GB of RAM. If you are using a system with less than 2GB of RAM, we recommend you create a swap file; otherwise, your upgrade might fail.

Please not that the memory_limit PHP option value in the root .htaccess file is still the same, but Magento 2 increases (and even totally disables) it for the most memory intensive tasks.