Re:Folders with High File Counts
by londons_explore on Thursday January 19, 2023 @10:21AM
(#34441229)
Isn't that mostly because android devices use the old school "picture transfer protocol" mode, which involves a round trip to the device for every single object in a directory, rather than being able to just retrieve a directory listing in all one request like typical filesystems.
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These days it's exclusively MTP as an extension to PTP that can transfer more than pictures, but similar problems with slow directory listings still exist due to the required translation between names and object IDs. Also the protocol does not support multiplexing requests, so you can't copy files while a directory is getting iterated.