Same beginning, different content
512 files of 512 KiB · 64 duplicate groups
DiscReveal
71 ms
Czkawka 12.0.2
193 ms
Benchmarks
Duplicate search: DiscReveal and Czkawka compared
Four targeted comparisons using identical files. Search times, correct matches and the limits of measurements without the interface.
Duplicate search
Duplicate search compared
DiscReveal finds identical file contents and retains an original during cleanup. Here we compare search times with Czkawka.
A direct comparison with Czkawka
Our search core is faster than Czkawka 12.0.2 in three of four targeted tests. Czkawka leads in the particularly difficult fourth case. Both find exactly the expected duplicates.
Search core / command line · no graphical interfaces · warm Windows file cache
Differences outside the samples
60 files of 8 MiB · 20 duplicate groups
DiscReveal
392 ms
Czkawka 12.0.2
354 ms
Many identical copies
12 identical files of 16 MiB
DiscReveal
77 ms
Czkawka 12.0.2
192 ms
Small files excluded
6,000 small files + 16 large unique files
DiscReveal
15 ms
Czkawka 12.0.2
88 ms
Shorter bars are better. Times in milliseconds.
What did we measure?
Intel Core i7-6700K, SATA HDD, five runs per program after a warm-up, median. Time was measured from process start to completed result export. Both app caches were disabled; the Windows file cache was already warm. DiscReveal was measured as an isolated search core with full byte comparison; Czkawka 12.0.2 as its command-line program with BLAKE3 and the default thread count. Neither graphical interface was included.
The test files were deliberately created for different checking scenarios. They are not a typical collection of personal documents. Results depend on files, drive and cache and do not promise a general speedup. Cold-cache runs or the complete app may take different amounts of time.