Profile memory of different requests

It would be nice to run a memory profiler on various requests, to make sure there aren't any long-running blocking calls:

https://github.com/tmm1/perftools.rb

The issue names no files or representative requests. Start by locating the application's request entry points, then review the perftools.rb profiler linked in the issue and run it against several request types. Done means the selected requests have profiling results and any long-running blocking calls are identified.

Written by the indexing model from the issue text.