https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247964
Oliver Fromme <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #5 from Oliver Fromme <[email protected]> --- (In reply to Mark Linimon from comment #3) (Note, I'm not the submitter, but I'm affected, too.) It certainly is relevant, but it's probably not easy to fix. As far as I know, FreeBSD only supports BOT (bulk-only transfer) for USB mass storage devices, which is too slow for modern external SSD and similar devices. For better speed, UASP support (USB-attached SCSI protocol) is required, which FreeBSD is lacking, as far as I know. I see very similar behavior with my various Samsung T5 and T7 devices (these are external SSDs). In Windows, the T5 delivers 500 MByte/s, and the T7 even more if the port supports USB3 gen 2. In FreeBSD, I get only 100 to 150 MByte/s. Same machine, same port, same device. This is with copying large files such as DVD images, so the IOPS and per-file overhead are negligible. -- You are receiving this mail because: You are the assignee for the bug.
