https://bugs.kde.org/show_bug.cgi?id=346619

--- Comment #4 from Vladimir <vladimir.mensha...@gmail.com> ---
(In reply to Nate Graham from comment #3)
> Thanks for the update! So the slowness of not respecting f_bsize manifested
> when you used Dolphin to move or copy a file (via copy-paste or
> drag-and-drop) to a local mount for an MTP device?

Yes, it was like that. Current value 128K is enough for everyone © Almost

I think it's generally good practive to align IO size to size of filesystem
block, so filesystem will not squeeze your data into any tail-space in case of
small write, etc. 

My MTP implementation uses partial reads/writes to avoid full object
sending/retrieval, making MTP as fast as any other way to transfer data from/to
device. 

The problem with partial objects, it's done from userspace on android, and this
approach has an additional overhead of starting/committing object transaction.
I've decided to advertise large block size to userspace, it worked with some
other file managers, but not the dolphin.  :)

Thanks

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