On 1 July 2017 at 18:55, Juan Francisco Cantero Hurtado <i...@juanfra.info> wrote: > On Sat, Jul 01, 2017 at 03:43:48PM -0400, Donald Allen wrote: >> On 1 July 2017 at 12:06, Juan Francisco Cantero Hurtado >> <i...@juanfra.info> wrote: >> >> > The USB disks and ext2 are both quite slow on OpenBSD. Try with FFS but >> > you're not going to see better numbers. >> > >> > On Linux, the kernel uses UAS for your USB disks. We only supports >> > bulk-only. >> >> If you are implying that if I had only waited a week or a month for >> this to complete on OpenBSD yesterday, I think you are incorrect. This >> was hung, not slow. > > No, it's just slow. I've had the same problem for years. Our ext2 > implementation is slow even on SATA.
This is not helpful. You insist that you know what is going on when I was in front of the computer and you were not. File copying to an ext2 filesystem on a usb drive is 10x slower than to an ffs filesystem on an internal sata drive mounted async (ext2 is async; apples to apples). I know because I've measured it, including the time to sync. The file in question was 1.5 GB. That copy should have taken 150 seconds or so at the rates I measured. The system sat there for two hours, as I said in my message. And when I came back, it was making no progress, as I also said in my message. I'm done discussing this. I've reported what I found and offered to help debug it. My workaround is simple: I will do these backup disk updates and anything else involving ext2/usb disks with Linux.
