>From your dmesg, your machine has USB 3.0 hardware ports usb0 at xhci0: USB revision 3.0
and you're using a USB 2.0 flash drive - rev 2.00/1.10 umass0 at uhub0 port 2 configuration 1 interface 0 "Kingston DataTraveler 2.0" rev 2.00/1.10 addr 6 You could upgrade to a USB 3.0 flash drive. On USB 3.0 hardware port with a USB 3.0 flash drive ( not an SSD ), with a MSDOS file system, I get about 2.5 MB/s 4.2BSD file system, I get about 7 MB/s with rsync --info=progress2 ./SOURCE/ /DEST transferring a single 1GB file. Attempting to dd an image, I get about 20 MB/s # dd if=img bs=1m | pv -s 16GB | dd of=/dev/rsd1c bs=1m On Sun, Jan 29, 2017 at 6:57 PM, Ali Farzanrad <temp+...@frad.ir> wrote: > G <gp...@mailbox.org> wrotes: >>Hello. >>Im trying to copy files from my laptop to a usb stick. >>The speed varies between 300kB/sec and 400kB/sec. Its really slow. > > I also have the same problem. > It seems that block files are slow and it is not possible to mount raw > files. > I tested it with dd(1) and found that fastest way to transfer data is > using raw devices: > > # dd if=/dev/rsd1c of=temp.fs bs=1m > # vnconfig vnd0 temp.fs > # mount /dev/vnd0i /mnt/usb > # ... do copy ... > # umount /mnt/usb > # vnconfig -u vnd0 > # dd if=temp.fs of=/dev/rsd1c bs=1m
