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#1 2012-09-22 08:47:38
- agkbill
- Member
- Registered: 2011-06-13
- Posts: 85
[SOLVED] USB, HD not running at top speed?
Hi,
I am having big problem with the performance of my external USB hard drive.
The speed have dropped like 10 times.
I used "hdparm" to take a look. Measured bot the internal sda and external sdc. It showed:
[root@torr ~]# hdparm -t /dev/sdc
/dev/sdc:
Timing buffered disk reads: 2 MB in 3.91 seconds = 524.09 kB/sec
[root@torr ~]# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 72 MB in 3.04 seconds = 23.71 MB/sec
[root@torr ~]#Really big difference, I expect a bit more from the USB disk.
Output: dmesg | grep usb
[root@torr ~]# dmesg | grep usb
[ 0.846755] ACPI: bus type usb registered
[ 0.846810] usbcore: registered new interface driver usbfs
[ 0.846833] usbcore: registered new interface driver hub
[ 0.853737] usbcore: registered new device driver usb
[ 1.186739] usb 1-1: new high-speed USB device number 2 using ehci_hcd
[ 1.303372] usb 1-1: device descriptor read/64, error -71
[ 1.523384] usb 1-1: device descriptor read/64, error -71
[ 1.733403] usb 1-1: new high-speed USB device number 3 using ehci_hcd
[ 1.850027] usb 1-1: device descriptor read/64, error -71
[ 2.070039] usb 1-1: device descriptor read/64, error -71
[ 2.280061] usb 1-1: new high-speed USB device number 4 using ehci_hcd
[ 2.693377] usb 1-1: device not accepting address 4, error -71
[ 2.800055] usb 1-1: new high-speed USB device number 5 using ehci_hcd
[ 3.213375] usb 1-1: device not accepting address 5, error -71
[ 3.580036] usb 2-1: new full-speed USB device number 2 using uhci_hcd
[ 3.714669] usb 2-1: not running at top speed; connect to a high speed hub
[ 6.238318] usbcore: registered new interface driver uas
[ 6.252876] usb-storage 2-1:1.0: Quirks match for vid 05e3 pid 0702: 420
[ 6.252906] scsi2 : usb-storage 2-1:1.0
[ 6.253493] usbcore: registered new interface driver usb-storage
[35299.746585] usb 2-1: USB disconnect, device number 2
[35302.890099] usb 1-2: new high-speed USB device number 6 using ehci_hcd
[35303.006760] usb 1-2: device descriptor read/64, error -71
[35303.229883] usb 1-2: device descriptor read/64, error -71
[35303.443419] usb 1-2: new high-speed USB device number 7 using ehci_hcd
[35303.560086] usb 1-2: device descriptor read/64, error -71
[35303.783418] usb 1-2: device descriptor read/64, error -71
[35303.996750] usb 1-2: new high-speed USB device number 8 using ehci_hcd
[35304.410054] usb 1-2: device not accepting address 8, error -71
[35304.520086] usb 1-2: new high-speed USB device number 9 using ehci_hcd
[35304.933389] usb 1-2: device not accepting address 9, error -71
[35305.189880] usb 2-2: new full-speed USB device number 3 using uhci_hcd
[35305.323731] usb 2-2: not running at top speed; connect to a high speed hub
[35305.356133] usb-storage 2-2:1.0: Quirks match for vid 05e3 pid 0702: 420
[35305.356190] scsi3 : usb-storage 2-2:1.0
[40703.876067] usb 2-2: USB disconnect, device number 3
[40708.315994] usb 1-2: new high-speed USB device number 10 using ehci_hcd
[40708.432662] usb 1-2: device descriptor read/64, error -71
[40708.652654] usb 1-2: device descriptor read/64, error -71
[40708.862648] usb 1-2: new high-speed USB device number 11 using ehci_hcd
[40708.979309] usb 1-2: device descriptor read/64, error -71
[40709.199321] usb 1-2: device descriptor read/64, error -71
[40709.409321] usb 1-2: new high-speed USB device number 12 using ehci_hcd
[40709.822650] usb 1-2: device not accepting address 12, error -71
[40709.929317] usb 1-2: new high-speed USB device number 13 using ehci_hcd
[40710.342640] usb 1-2: device not accepting address 13, error -71
[40710.599309] usb 2-2: new full-speed USB device number 4 using uhci_hcd
[40710.733938] usb 2-2: not running at top speed; connect to a high speed hub
[40710.772668] usb-storage 2-2:1.0: Quirks match for vid 05e3 pid 0702: 420
[40710.772716] scsi4 : usb-storage 2-2:1.0
[root@torr ~]# Output: lspci | grep USB
[root@torr ~]# lspci | grep USB
00:1d.0 USB controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 03)
00:1d.1 USB controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 03)
00:1d.2 USB controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 03)
00:1d.7 USB controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 03)
[root@torr ~]#Output: lsusb
[root@torr ~]# lsusb
Bus 002 Device 004: ID 05e3:0702 Genesys Logic, Inc. USB 2.0 IDE Adapter [GL811E]
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
[root@torr ~]#"dmesg | grep usb" report multiple times "not running at top speed". But how can I find out why?
Any ideas on why I do not get full speed and what to do?
All input most welcome.
Best regards,
Christer
Last edited by agkbill (2012-09-22 09:23:59)
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#2 2012-09-22 08:52:43
- nTia89
- Banned
- From: varese, italy
- Registered: 2008-12-22
- Posts: 1,230
Re: [SOLVED] USB, HD not running at top speed?
this could be helpful:
+pc: custom | AMD Opteron 175 | nForce4 Ultra | 2GB ram DDR400 | nVidia 9800GT 1GB | ArchLinux x86_64 w/ openbox
+laptop: Apple | MacBook (2,1) | 2GB ram | Mac OS X 10.4 -> DIED
+ultrabook: Dell | XPS 13 (9343) | 8GB ram | 256GB ssd | FullHD display | Windows 8.1 64bit ArchLinux x86_64 w/ Gnome
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#3 2012-09-22 09:23:11
- agkbill
- Member
- Registered: 2011-06-13
- Posts: 85
Re: [SOLVED] USB, HD not running at top speed?
Thank you nTia89
The computer I using is a laptop and the USB disk is the only external USB device I have on it.
But a restart of both USB disk and laptop make it all so much better.
After restart.
Output: dmesg
[root@torr ~]# dmesg | grep usb | grep error
[root@torr ~]# lsusb
Bus 001 Device 002: ID 05e3:0702 Genesys Logic, Inc. USB 2.0 IDE Adapter [GL811E]
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
[root@torr ~]# dmesg | grep usb | grep error
[root@torr ~]# dmesg | grep usb
[ 0.848087] ACPI: bus type usb registered
[ 0.848144] usbcore: registered new interface driver usbfs
[ 0.848167] usbcore: registered new interface driver hub
[ 0.859804] usbcore: registered new device driver usb
[ 1.200066] usb 1-2: new high-speed USB device number 2 using ehci_hcd
[ 6.821442] usbcore: registered new interface driver uas
[ 6.864410] usb-storage 1-2:1.0: Quirks match for vid 05e3 pid 0702: 520
[ 6.864439] scsi2 : usb-storage 1-2:1.0
[ 6.864976] usbcore: registered new interface driver usb-storageNo errors.
Output: hdparm
[root@torr ~]# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 82 MB in 3.06 seconds = 26.81 MB/sec
[root@torr ~]# hdparm -t /dev/sdb
/dev/sdb:
Timing buffered disk reads: 62 MB in 3.07 seconds = 20.19 MB/sec
[root@torr ~]#I don't think I can expect more.
I mark this as solved 
All the best!
Christer
Last edited by agkbill (2012-09-22 09:23:39)
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