content subset comparison

English support for the software AllDup
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NetMage
Posts: 1
Joined: 19 Sep 2020, 03:07

content subset comparison

Post by NetMage »

In many cases, if the name/size are the same, comparing all bytes is overkill - it would be nice if there was a faster subset comparison, like 10% of file at random positions or evenly spaced positions in blocks...

(Possibly even less than 10%, I am watching it compare 18-21MB jpg files from a WiFi connected PC and it is taking seconds per file out of 12,470 files. Perhaps a sliding scale based on file size or a maximum comparison bytes or blocks.)
therube
Posts: 322
Joined: 07 Nov 2012, 00:28

Re: content subset comparison

Post by therube »

A File Content search, Byte by Byte method, gives you the option to "First compare a data block at the end of the files".
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