Anro

I performed some testing and it looks like this issue appears only when there are many small files/directories. Big files does not cause such behavior. Windows EFS is definitely have to decrypt files on access, but I could not reproduce the issue with other than btsync processes, reading files in encrypted dir. Could you suggest some testing tool that can generate similar to btsync IO activity in specified folder?

I don't agree that rescanning even hundred thousands of files should lead to consuming almost all available RAM. I performed simple random reading tests in encryted folders and I could not reproduce condition where services.exe ate too much memory. Looks like btsync reads files another way comparing to my silly tests. Maybe btsync scanning could be slowered somehow?

There are 2 synced folders: 1) 66 456 Files, 4 217 Folders 2) 2 437 Files, 419 Folders Disabling encryption on synced folders workarounded the issue. But this is not an option for me.

Services.exe process utilize more than 8Gb of ram and the whole system becomes less responsive when folder rescan occurs. I've set 300 seconds folder rescan interval just to demonstrate correlation between spikes on "services.exe" stats and rescanning (x scale covers about 15 minutes): Synced folders are encrypted with Windows EFS.