Slow for many small files about cppcryptfs HOT 2 CLOSED

Ran another test for encfs4win using dokany 1.0.1, and the results were the worst of all candidates.

4th - encfs4win
Time Elapsed: 1hr 20 mins 36 sec
Average items/sec: 6
Average MBytes/sec: 0.37

This would seem to suggest that dokany is a critical reason for the slowness.

from cppcryptfs.

Thanks for running these benchmarks. It's interesting to see how cppcryptfs compares to BoxCryptor and EncFSMP.

I think the performance problem with small files is caused by Dokany. cppcryptfs performs about the same as the Dokany mirror sample program.

I think the "Extract linux-3.0.tar.gz" benchmark I put on the main cppcryptfs github page is similar to your test.

My benchmarks compared cppcryptfs to native NTFS and Dokany mirror.

I think the performance is slow with small files because there is too much latency in the communication between the Dokany client-side DLL and the Dokany kernel mode driver.

If you want, you could maybe do the same test using mirror.exe, and if you get similar results, then file an issue on the Dokany github page.

The mirror program is installed by Dokany here

C:\Program Files\Dokan\Dokan Library-1.0.1\sample\mirror\mirror.exe

from cppcryptfs.