Rack AllocationStats help

Append ras=true to your URL to trace all object allocations during the request. The server will respond with statistics on the allocations, instead of the application's response.

Options

ras=COUNT

send the request to the application COUNT times, to reduce statistics from
initial allocations that don't happen on repeat requests.

ras

immediately respond with this help text

ras=SCOPE

limit the list of allocations in the response to those whose `sourcefile`
matches SCOPE. ras[scope]='.' is a special case which is expanded to be
the current working directory.