Hi all
I’m trying to copy the contents of my home folder to USB 3.0 and the transfer speeds are hopeless!! It’s starts around 100MB/sec and at around 1GB it drops to 5MB/sec??? Total size of the home folder is 274.4 GB and the estimated time 38+ hours!!!
Then your dirty cache on the RAM must be about 1G. The speed of 100MB/s is first the transfer speed to RAM and when it is filled you see the actual speed. It writes in the background. The RAM cache acts as buffer. So 5MB/s cannot be an USB3 Device, even if you plug in an USB2 device in an USB3 port, it doesn’t become an USB3 device.
The only problem I see here is that the buffer is way to high for your usb device.
It has been discussed a lot of times and there is several ways to achieve the goal of being able to safely remove the USB stick when copying has been done.
Use a different USB port.
Sometimes the ports have different chips. Then it may be that a USB device runs better on one port than on others.
Use a different USB stick
Some USB sticks are big, but not really fast. Even if it says USB3, it’s not necessarily a fast stick.
Use an external hard drive instead
Anything over 16GB data volume is actually not an issue for a USB stick, but either for an external hard disk or for an external SSD.
Compress the data before copying (zstd)
Compression rates of 2:1 are often possible without any problems, which easily halves the time required for copying.
P.S.
How big is your usb-stick ?
500GB ?
Are you sure it is not a fake ?