Suggestion: add transfer rates to log files?

[ulfben]

Hi!

I'm a heavy user of FFS (Donation Edition) and would love a small addition to the log files; transfer speeds.

The header of each log looks like this today:

___________________________________________________________________________
|2017-07-19 - archive_to_offsite_sync: Synchronization completed with errors
|
|    Items processed: 159 (7,12 GB)
|    Items remaining: 7 (0 bytes)
|    Total time: 11:59:16
|__________________________________________________________________________


I would really appreciate to have:

___________________________________________________________________________
|2017-07-19 - archive_to_offsite_sync: Synchronization completed with errors
|
|    Items processed: 159 (7,12 GB)
|    Items remaining: 7 (0 bytes)
|    Total time: 11:59:16
|    Transfer rate (avg): 164.81 kBps
|    Transfer rate (peak): 1.12 Mbit/s
|__________________________________________________________________________


Does that seem like a reasonable addition?

Thanks for your time and effort!