Quote:
Originally Posted by ilovejedd
Yep, it does quite significantly. As far as I know, FFS does a bit-for-bit comparison meaning it essentially reads practically the entire 30GB on both source and destination when you sync...
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no. if i run a sync, shortly after a previous one it takes no time at all, it is definitely relying on saved data to determine what if anything has changed. maybe folder timestamps if windows has those ?
if i run one after say 24 hours the check takes longer & I can see a scrolling list of file names as it checks them
but it is still 10x faster than a previously owned shareware called synchromagic, that did use a slow checking method
in my version , which may not be the latest, pressing F6 brings up the comparison options & you can choose either file time and size,
[ Identify equal files by comparing modification time and size.] [ or file content.
i think a new install defaults to the time and size method
ps I just ran one, mirroring a source calibre folder to 2 target folders ( one in dropbox - so that is to the local dropbox copy on the same C drive (SSD) and one to 2nd hard drive. spinning drive)
I see an items found count race up to about 20,000 and a time in secs get up to about 20 secs for the scanning phases, then ti did a handful of copies of actula changes made today...
when FFS is done, I see the dropbox tray icon show
blue for syncing for a few seconds, as the book changes in C:/dropbox get uploaded.
PS I assume that dropbox itself uses file name and timestamp to determine what is newer than cloud ( and maybe some secret proprietary checks also) > I used to fret that if ever i restored a C drive from a windows 7 tpe system image, then Drobox could get confused , but the days of relying on that method are gone now. its faster to clean install W10 and then put all your backed up files and reinstall your programs back, than to want to use a drive image which may throw a sulk and not work anyway.