System Performance landing page Access the System Performance landing page from Dev Studio by clicking Configure > System > Performance. The following tabs are available. Performance Analyzer (PAL) Database Trace Performance Profiler Rules not using lightweight lists Rules not using lightweight lists Use the Lightweight Lists utility to report on rules in your application that are using page lists where they could use lightweight lists instead. You can improve system performance by using lightweight lists. The utility searches list view rules and summary view rules, plus Obj-Browse and LookupList activities.