New data reported too big

[Yonatan Broza <yonatan@cuppcomputing.com>]

Hi,

I'm using tarsnap to backup around 22GB in 22K files.

There's hardly any difference between backups (verified using diff) yet tarsnap reports 12MB of new data.

Most timestamps are changed since most of the files are recreated before each backup.

What's the reason for the large amount of new data?

Thanks.