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Re: Supper slow USB disk




On Sun, Oct 01, 2017 at 05:11:12AM +0330, Mostafa Shahverdy wrote:
   Can you quantify the performance

Using my own system, it copies at most 200kps while using a live cd it copies
up to 4Mps

measured how?

[    1.516112] usb 3-3: new high-speed USB device number 2 using ehci-pci
[    1.666461] usb 3-3: New USB device found, idVendor=058f, idProduct=6362
[    1.666464] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    1.666467] usb 3-3: Product: Mass Storage Device
[    1.666469] usb 3-3: Manufacturer: Generic
[    1.666471] usb 3-3: SerialNumber: 058F312D81B

So this is your card reader

[    1.937460] usb 3-4: New USB device found, idVendor=8564, idProduct=1000
[    1.937463] usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    1.937465] usb 3-4: Product: Mass Storage Device
[    1.937467] usb 3-4: Manufacturer: JetFlash
[    1.937469] usb 3-4: SerialNumber: 357F6FFRKM51A594

This is the flash drive

[   14.180104] usb 3-3: reset high-speed USB device number 2 using ehci-pci
[   46.180106] usb 3-3: reset high-speed USB device number 2 using ehci-pci
[   78.948116] usb 3-3: reset high-speed USB device number 2 using ehci-pci
[  121.956112] usb 3-3: reset high-speed USB device number 2 using ehci-pci
[  154.724113] usb 3-3: reset high-speed USB device number 2 using ehci-pci
[  187.496100] usb 3-3: reset high-speed USB device number 2 using ehci-pci
[  218.212114] usb 3-3: reset high-speed USB device number 2 using ehci-pci
[  355.428111] usb 3-3: reset high-speed USB device number 2 using ehci-pci
[  388.196116] usb 3-3: reset high-speed USB device number 2 using ehci-pci

And the card reader is resetting every 30 seconds. Can you either unplug the card reader or move the flash drive to the bus where the wireless adapter is located to see what effect that has?

Mike Stone