Comment 8 for bug 441660

One other thought: some kind of fix for potential division-by-zero errors should probably still be added. I didn't look closely at the meaning of the data, but if very short time intervals have the potential to be zero (depending on the time granularity available), this could still be a problem on a VM.

Many hosts will have enough RAM to cache all areas of the guest disk used during boot, so subsequent boots of the VM will be entirely from memory... so it seems feasible to have zero-time events.