Created attachment 6231 trace Copying a file from a ramdrive to a zfs filesystem has a max transfer rate around 220MB/s. Copying this same file/directory using cp, the max transfer rate is around 800MB/s. Attached is the thunar trace of the copy System information AMD 8120, 32 GB RAM, ZFS kernel module (0.6.4+) kernel 3.17.4 on Fedora 21. The destination is an Intel 750 Series ssd (max write 1000+ MB/s)
Does it work fast when you close the thunar windows while copying?
Unfortunately no difference when all thunar windows are closed. I also killed the daemon and spawned a single instance, same result
Then I suspect either gio/gvfs is slow with copying, or it is some other part of the code which makes this slow. Can't help you with that, but the code works, so I am closing this. Feel free to reopen this if you have any idea what could be wrong.