Running high traffic sites powered with PHP applications is impossible without a PHP op-code cache / accelerators. Op-code caches speed up PHP applications by parsing and tokenizing PHP scripts once, and executing them faster for every subsequent request. There are 3 popular open-source op-code caches: Alternative PHP Cache (APC) is a free, open source framework

Data about up-sells, cross-sells and related products in Magento is stored in catalog_product_link table. The link_type_id column specifies the relation between product_id and linked_product_id. Possible relations are: 1 – Related products 2 – Bundle products 3 – Grouped products 4 – Up-sell 5 – Cross-sell So if you want to remove all up-sells for all