USB 3.0 SLOW READ RATE

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linuxtothebone
Black ninja
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Re: USB 3.0 SLOW READ RATE

Post#16 by linuxtothebone » 10 Jan 2015, 11:49

Hi there,

This is the most difficult thing I have tried to figure out with linux. lol

Here is the output from linux mint. Yes I definately have usb3 port and only get usb3 performance on the read from device not the write to device. I dont know why. And I am not sure anyone does.

this is the output from lsusb on linux mint 17 and I have the same problem with it too

care@care-T1005 ~ $ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 003: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
Bus 004 Device 002: ID 0e8f:0016 GreenAsia Inc. 4 port USB 1.1 hub UH-174
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 2087:0a01 Cando Multi Touch Panel
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 002: ID 1058:1048 Western Digital Technologies, Inc.
Bus 007 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

beny
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Re: USB 3.0 SLOW READ RATE

Post#17 by beny » 10 Jan 2015, 13:08

hi, well i suppose you have two usb3 port, just a try connect your usb 3 key to the other usb 3 port and try a data transfer to the hard disk a big size file and a lot of small size file:hdparm -I /dev/sdx | more and hdparm -t /dev/sdx if you install hdparm the first command tell you all the data of the disk or device,the second test the speed of your device, warning hdparm can damage your data if you use it in a wrong way.

linuxtothebone
Black ninja
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Re: USB 3.0 SLOW READ RATE

Post#18 by linuxtothebone » 15 Jan 2015, 08:54

Hi beny,

I know the lsusb output says there are 2 usb3 hubs but there is only one. My laptop has 3 usb ports and 1 usb 2.0, 1 usb 2.0 & Esata, 1 usb 3.0.

I have checked each port by plugging in usb key then lsusb command in console and there is no register for usb3 on any other usb ports.

When using the designated usb3 port on the laptop it always registers it as Bus 007 Device 002: ID 1058:1048 Western Digital Technologies, Inc. Never on Bus 007 Device 001:

Could this be causing the problem? or are there some settings in the bios. maybe this has something to do with port allocations with the hardware? I dont know what I am talking about with port allocations. what I am trying to say is maybe there is some hardware switch that is the problem not the software.

Because I do get usb3 speed on one half of the read/write process.

beny
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Re: USB 3.0 SLOW READ RATE

Post#19 by beny » 15 Jan 2015, 11:30

hi,i have seen that you have an esata port,maybe you can try if exist an adapter usb3 to esata plug,and you can use the usb3 with your key,

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