I'm importing data(products, customers, and orders) from a Magento store to another Magento store.
For example, when I try to import the products, I need to load the product to check if it already exists and use some attributes of the loaded product. I'm using the method Mage::getModel('catalog/product')->load($sku) and I run the script using command line.
Something like: $ php -f shell/mymodule.php
The problem is that Magento doesn't stop to increase the memory usage when I use the load() method in a loop.
foreach ($result['items'] as $item) {
echo $index . ' - Memory: ' . memory_get_usage() . "
";
/** @var Mage_Catalog_Model_Product $product */
$product = Mage::getModel('catalog/product');
$product->load($product->getIdBySku($item['sku']));
$product->getOptionInstance()->unsetOptions()->clearInstance();
unset($product);
gc_collect_cycles();
$index++;
}
- 1 - Memory: 28147376
- 2 - Memory: 34600320
- 3 - Memory: 34661976
- 4 - Memory: 34721128
- 5 - Memory: 34776600
- ...
- 10 - Memory: 35051216
- ...
- 100 - Memory: 40148904
In some cases I need to import thousands of products, which causes a memory overflow. As you can see in the script above, I also tried to run some optimization functions within the foreach but that isn't enough in performance to prevent memory overflow.
$product->getOptionInstance()->unsetOptions()->clearInstance();
unset($product);
gc_collect_cycles();
I found a kind of solution that changes the Magento core, but it was made for Magento 1.4 and doesn't work for Magento 1.9 that I am using.
https://ringsdorff.net/2009/07/23/guest-post-fix-for-memory-leaks-in-magento/
Is there any effective solution to prevent the increase of memory usage in Magento 1.9?
