kernel-packages team mailing list archive

[Daniel Barrett <dbarrett@xxxxxxxxxxxxxxx>]

gonssal (#104): On 13.04 (live CD), I ran "sudo modprobe ehci_hcd" and
copied files from an internal SSD to an external USB3 drive. I get
super-slow 1 MB/second transfer rates. I boot the same computer into
Windows 7 (it's dual boot) and I get 150MB/sec.

I get the same problem if I use eSATA or Firewire (the external drive
has all three connections): slow on 13.04, fast on Windows 7.

If I boot on a Knoppix 7.2 CD, however... FAST FAST FAST transfer speed.
Knoppix is 3.9 kernel, while 13.04 is 3.8.

I also tried the Ubuntu nightly build of 13.10 today (kernel 3.11), and
it had the same slowness problem as 13.04.

I also tried #106 (echo "never" >
"/sys/kernel/mm/transparent_hugepage/enabled") and it made no
difference.

My vendor blames the ASmedia Chipset on my motherboard, which he says
Linux has "rudimentary at best" support for.

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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/500069

Title:
  USB file transfer causes system freezes; ops take hours instead of
  minutes

Status in The Linux Kernel:
  Fix Released
Status in “linux” package in Ubuntu:
  Triaged
Status in “linux” package in Fedora:
  Unknown

Bug description:
  USB Drive is a MP3 Player 2GB

  sbec@Diamant:~$ lsusb
  Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Bus 003 Device 002: ID 046d:c50e Logitech, Inc. MX-1000 Cordless Mouse Receiver
  Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Bus 001 Device 004: ID 0402:5661 ALi Corp.
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  sbec@Diamant:~$

  Linux Diamant 2.6.31-15-generic #50-Ubuntu SMP Tue Nov 10 14:54:29 UTC 2009 i686 GNU/Linux
  Ubuntu 2.6.31-15.50-generic

  to test, i issued dd command:
  dd if=/dev/zero of=/media/usb-disk/test-file bs=32

  while dd is running i run dstat.... this is in the log file attached.

  other logs are also in the tar.gz file...

  there is a huge USB performance Bug report #1972262. this Report is
  something simular

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