What about hammerd? * Starts when system starts
* Wakes up every 10 seconds or so to check current system load/memory usage to estimate if its appropriate to run a cleanup operation at this time. * Can have a text file configuration where you can specify maximum size(GB) of history per PFS or % of disk space * Remembers last time it was run (stores information on disk in some text file) * Maybe it can detect if it's a laptop and running on battery to defer cleanup till power is plugged in? The daemon itself would be fairly inexpensive to run. Petr
