A script that looks at wsp files to determine the last time they've been updated and will move them into an archive folder and gzip.
Graphite web can read gzipped files. In local_settings.py make sure you also point to your archive directory in DATA_DIRS
Run this on cron or another schedular every day. It will move inactive metrics/nodes to an archive directory that you specify.
A few gems will be needed:
gem install logger
gem install file-find
Specify a couple directories at the top of the script