This was some kind of memory usage analysis tool. It depends on the control
port so it cannot work after I delete the control port. The code itself is
messy, undocumented, and has no automated tests. I don't know if it works at
all anymore. Even if it does, no one ever runs it.
Measuring Tahoe-LAFS' memory usage over the course of maintenance and
development is a lovely idea but the project has not managed to adopt (or
maintain?) that practice based on this tool. Given sufficient interest we can
resurrect this idea using a more streamlined process and less invasive tools
in the future.