System records all access data into the database, including visitors and machine access (such as search engine crawlers), machine access will typically account for a large part of the data, so that will produce a small amount of additional server performance costs, including Web services, MySQL database service; This part of the data can not be seen.
The database tables responsible for logging access logs are: Log_customer, Log_quote, Log_summary, Log_summary_type, Log_url, Log_url_info, Log_visitor, Log_ Visitor_info, Log_visitor_online, report_event.
Workaround: Disable logging.
Modify file: App/etc/locaL.xml
<?xml version= "1.0"?><config> <frontend> <events> <controller_action_predi Spatch> <observers><log><type>disabled</type></log></observers></controller_action_predispatch> <controller_action_postdispatch> <observers><log><type>disabled</type></log></ Observers> </controller_action_ Postdispatch> <customer_login> <observers ><log><type>disabled</type></log></observers> </customer_login> <customer_logout> <observers><log><type>disabled</type></log></observers> </customer_logout> <sales_quote_save_after> <observers><log><type >disabled</type></log></observers> </sales_quote_save_after> <checkout_quote_destroy> <observers><log><type>disabled</type></log></ Observers> </checkout_quote_ Destroy> &nbsP; <catalog_controller_product_view> <observe Rs><reports><type>disabled</type></reports></observers> </catalog_controlle R_product_view> <sales_quote_item _save_before> <observers><reports><type>disabled</type></reports></obse Rvers> </sales_quote_item_save_before> &nbs P; <wishlist_add_product> <observers><reports><type>disabled</type></ Reports></observers> </wishlist_add_product> &nbs P; <wishlist_share> <observers><reports><type>disabled</type> ;</reports></observers> </wishlist_share> <sendfriend_ Product> <observers><reports><type>disabled</type></reports></observers > </sendfriend_product> </events> &nbs P; </frontend></config>
because the visitor's browsing history relies on this journal record, the visitor's "Recently Viewed Items" module cannot be displayed after this is disabled.
Magento Performance Optimizations: Disabling Access logging