** Description changed:
- Low speed when transferring files over USB 2.0 and USB 3.0. An example device
with FAT:
- Bus 002 Device 004: ID 13fe:4100 Kingston Technology Company Inc.
+ Low speed when transferring files over USB 2.0 and USB 3.0. Example USB flash
devices with FAT that demonstrates this problem:
+ ID 13fe:4100 Kingston Technology Company Inc.
+ ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.)
64MB QDI U2 DISK
- If the USB drive is not empty, the transferring speed is lower.
- the bigger the file, the slower the speed. Here are my tests:
+ If the USB drive is not empty, the transferring speed is lower. the
+ bigger the file, the slower the speed. Here are my tests:
from HDD to USB (FAT):
1. 450 MB in 4 sec. (USB sitck EMPTY) 112.5 MB/s
2. 450 MB in 52 sec. (USB stick not EMPTY) 8.6 MB/s
3. 735 MB in 26 sec. (USB stick EMPTY) 28.2 MB/s
4. 735 MB in 40 sec. (USB stick not EMPTY) 18.3 MB/s
5. 735 MB in 3 sec. (after formatting USB stick) 245 MB/s
6. 1,5 GB in 3min35 (USB sitck EMPTY) 6.9 MB/s
7. 1,5 GB in 4min31 (USB stick not EMPTY) 5.5 MB/s
from HDD to USB (ext4)
1. 450 MB in 1 sec. (USB sitck EMPTY) 450 MB/s
2. 450 MB in 52 sec. (USB sitck not EMPTY) 8.6 MB/s
3. 735 MB in 14 sec. (USB sitck EMPTY) 12.2 MB/s
4. 735 MB in 1min (USB stick not EMPTY) 12.25 MB/s
5. 735 MB in 16 sec. (after formatting USB stick) 45.9 MB/s
5. 1,5 GB in 3min04 (USB sitck EMPTY) 8.1 MB/s
6. 1,5 GB in 5min14 (USB stick not EMPTY) 4.7 MB/s
from USB (FAT) to USB (FAT)
1. 735 MB in 10 sec. (USB sitck EMPTY) 73 MB/s
2. 735 MB in 4min (USB stick not EMPTY) 3.0 MB/s
I tested the ext3 filesystem and I had the same results.
- This is not reproducible using device with FAT:
+ This is not reproducible using USB external HDD with FAT:
Bus 002 Device 003: ID 0766:0001 Jess-Link Products Co., Ltd
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-32-generic 3.2.0-32.51
ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
Uname: Linux 3.2.0-32-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: aleksej 1843 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xdf000000 irq 49'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:10ec0269,10431ba3,00100100
HDA:80862805,80860101,00100000'
Controls : 30
Simple ctrls : 14
Date: Tue Oct 16 18:46:30 2012
HibernationDevice: RESUME=UUID=89690659-5cf9-495f-9a95-8615f4f3b144
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: ASUSTeK Computer Inc. U36SD
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-32-generic
root=UUID=f15fe73f-5542-4724-969b-90222a5cc2e3 ro quiet splash
i915.i915_enable_rc6=1 vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-32-generic N/A
linux-backports-modules-3.2.0-32-generic N/A
linux-firmware 1.79.1
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: Upgraded to precise on 2012-05-15 (154 days ago)
dmi.bios.date: 07/12/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: U36SD.205
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: U36SD
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrU36SD.205:bd07/12/2011:svnASUSTeKComputerInc.:pnU36SD:pvr1.0:rvnASUSTeKComputerInc.:rnU36SD:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: U36SD
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
** Summary changed:
- Low speed when transferring files over USB drive
+ Low speed when transferring files over USB flash drives
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1067452
Title:
Low speed when transferring files over USB flash drives
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