This is the help menu of the rack-mini-profiler gem, append the following to your query string for more options:

      pp=help : display this screen
      pp=env : display the rack environment
      pp=skip : skip mini profiler for this request
      pp=no-backtrace : don't collect stack traces from all the SQL executed (sticky, use pp=normal-backtrace to enable)
      pp=normal-backtrace (*) : collect stack traces from all the SQL executed and filter normally
      pp=full-backtrace : enable full backtraces for SQL executed (use pp=normal-backtrace to disable)
      pp=disable : disable profiling for this session
      pp=enable : enable profiling for this session (if previously disabled)
      pp=profile-gc : perform gc profiling on this request, analyzes ObjectSpace generated by request
      pp=profile-memory : requires the memory_profiler gem, new location based report
      pp=flamegraph : a graph representing sampled activity (requires the stackprof gem).
      pp=async-flamegraph : store flamegraph data for this page and all its AJAX requests. Flamegraph links will be available in the mini-profiler UI (requires the stackprof gem).
      pp=flamegraph&flamegraph_sample_rate=1: creates a flamegraph with the specified sample rate (in ms). Overrides value set in config
      pp=flamegraph&flamegraph_mode=cpu: creates a flamegraph with the specified mode (one of cpu, wall, object, or custom). Overrides value set in config
      pp=flamegraph_embed : a graph representing sampled activity (requires the stackprof gem), embedded resources for use on an intranet.
      pp=trace-exceptions : will return all the spots where your application raises exceptions
      pp=analyze-memory : will perform basic memory analysis of heap