Slow USB3.0 HDD speed
Closed this issue · 2 comments
Hello, I have a rock64 in which I have installed stable OMV image (https://github.com/ayufan-rock64/linux-build/releases/download/0.9.14/stretch-openmediavault-rock64-0.9.14-1159-armhf.img.xz.
I am willing to use my Seagate Expansion Desk drive (8TB) for samba shares, when I connect my drive directly to my desktop PC, I can read/write at 100MBps or more, but in rock64 it drops to 20-30MBps write and 30-40 read speeds.
I tried installing armbian and blacklisting UAS driver, which made me able to have 120MBps read speeds. Maybe there are problems with UAS driver in OMV image?
To reproduce, hook up a USB3.0 Seagate external HDD and test read/write speeds of OMV images
External Seagate drives have been known to be buggy for years. If it's a fairly new one, I would assume that there might be workarounds missing from the Kernel. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/usb/storage/unusual_uas.h?h=v5.10.1
Personally I have not tested USB3.0 storage on the Rock64, so I cannot say if there is any devices that run faster.
I found the reason, it was that the disk has NTFS partitions, and you must use "-o big_writes" option when mounting them.
Using it enables the rock64 to get all the performance out of it's USB3 port 👍