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Old 02-05-2014, 06:25 PM   #1
arubin
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Registered: Mar 2004
Location: Middx UK
Distribution: Slackware64 14.1 (multilib)
Posts: 1,210

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USB 3 disc. Parent hub missing LPM exit latency info


I have a new USB 3.0 external hard drive and I am wondering if I am getting the transfer speeds I should expect. There is a message in dmesg which leads me to wonder if all is well. How do I check what speeds I am getting? Worker shows file transfer of about 95MiB/s

Quote:
[13243.310412] usb 6-2: new SuperSpeed USB device number 6 using xhci_hcd
[13243.321451] usb 6-2: Parent hub missing LPM exit latency info. Power management will be impacted.
[13243.322391] usb 6-2: New USB device found, idVendor=0bc2, idProduct=3312
[13243.322392] usb 6-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[13243.322393] usb 6-2: Product: Expansion Desk
[13243.322394] usb 6-2: Manufacturer: Seagate
[13243.322395] usb 6-2: SerialNumber: NA4MFJQT
[13243.323154] usb-storage 6-2:1.0: USB Mass Storage device detected
[13243.323255] scsi16 : usb-storage 6-2:1.0
[13244.325755] scsi 16:0:0:0: Direct-Access Seagate Expansion Desk 0740 PQ: 0 ANSI: 6
[13244.327470] sd 16:0:0:0: [sdc] Spinning up disk...
 
  


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