So it is only slow on the slow port? If so it kind of sounds like the fs may be mounted sync and/or the disks write cache is disabled. smartctl --xall <device> sometimes works against usb disk and sometimes it does not work. if it works it will tell you the write cache status. The sync and/or btrfs filesystem settings would be seen in /proc/mounts On Thu, Aug 15, 2024 at 3:09 PM Andre Robatino <robatino@xxxxxxxxxxxxxxxxx> wrote: > > The drive is about 76% full but I don't think it's fragmentation since the transfer of the same ~2 GB file to the portable drive is consistently relatively fast from a blue or yellow USB port, and very slow from a black USB port. Here's the output of "df -T /dev/sdb1" with the drive plugged in: > > Filesystem Type 1K-blocks Used Available Use% Mounted on > /dev/sdb1 btrfs 976759808 735116440 239872328 76% /run/media/andre/Seagate > > Below is the output from usbview, this is with it plugged into the desktop's black USB 2.0 port so it's only showing that speed, not the USB 3.0 speed of the portable drive. > > Backup+ BK > Manufacturer: Seagate > Serial Number: NA515PK9 > Speed: 480Mb/s (high) > Bus: 2 > Address: 3 > USB Version: 2.10 > Device Class: 00 > Device Subclass: 00 > Device Protocol: 00 > Maximum Default Endpoint Size: 64 > Number of Configurations: 1 > Vendor Id: 0bc2 > Product Id: a013 > Revision Number: 01.00 > > Config Number: 1 > Number of Interfaces: 1 > Attributes: 80 > MaxPower Needed: 100mA > > Interface Number: 0 > Name: usb-storage > Alternate Number: 0 > Class: 08 > Sub Class: 06 > Protocol: 50 > Number of Endpoints: 2 > > Endpoint Address: 02 > Direction: out > Attribute: 2 > Type: Bulk > Max Packet Size: 512 > Interval: 0ms > > Endpoint Address: 81 > Direction: in > Attribute: 2 > Type: Bulk > Max Packet Size: 512 > Interval: 0ms > -- > _______________________________________________ > users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx > Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx > Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue -- _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
