Arch Linux

Schlunze

Member

Registered: 2013-10-03

Posts: 54

USB 3.0 slow speed again

Hello,

i have problems with my external USB3.0 drive. Since i bought this crappy ext. HD never got write speeds over 21MB/s in ArchLinux.Filesystem is NTFS.
Some people i already asked have a little clue why it writes that slow, but none of them was able to fix it.

Mainboard: ASUS AT5IONT-I
CN-Memory external USB3.0 2TB HD

Output of: lsusb

Bus 006 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 046d:c312 Logitech, Inc. DeLuxe 250 Keyboard
Bus 004 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 002 Device 002: ID 046d:c01e Logitech, Inc. MX518 Optical Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 003: ID 05e3:0731 Genesys Logic, Inc. 
Bus 005 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Output of: lsmod | grep xhci

xhci_hcd               91406  0 
usbcore               177959  6 uhci_hcd,usb_storage,ehci_hcd,ehci_pci,usbhid,xhci_hcd

Output of: zcat /proc/config.gz | grep XHCI_HCD

CONFIG_USB_XHCI_HCD=m
# CONFIG_USB_XHCI_HCD_DEBUGGING is not set

Output of: dmesg

[  301.726966] usb 5-2: new SuperSpeed USB device number 3 using xhci_hcd
[  301.741660] usb 5-2: Parent hub missing LPM exit latency info.  Power management will be impacted.
[  302.011287] usb-storage 5-2:1.0: USB Mass Storage device detected
[  302.011517] scsi4 : usb-storage 5-2:1.0
[  303.014842] scsi 4:0:0:0: Direct-Access     ST2000DL 003-9VT166       CC32 PQ: 0 ANSI: 0
[  303.022616] sd 4:0:0:0: [sdb] 3907029164 512-byte logical blocks: (2.00 TB/1.81 TiB)
[  303.023532] sd 4:0:0:0: [sdb] Write Protect is off
[  303.023548] sd 4:0:0:0: [sdb] Mode Sense: 03 00 00 00
[  303.024329] sd 4:0:0:0: [sdb] No Caching mode page found
[  303.024351] sd 4:0:0:0: [sdb] Assuming drive cache: write through
[  303.026807] sd 4:0:0:0: [sdb] No Caching mode page found
[  303.026824] sd 4:0:0:0: [sdb] Assuming drive cache: write through
[  303.047722]  sdb: sdb1
[  303.050520] sd 4:0:0:0: [sdb] No Caching mode page found
[  303.050535] sd 4:0:0:0: [sdb] Assuming drive cache: write through
[  303.050550] sd 4:0:0:0: [sdb] Attached SCSI disk

Output of: hdparm -tT /dev/sdb1

/dev/sdb1:
 Timing cached reads:   1686 MB in  2.00 seconds = 842.84 MB/sec
 Timing buffered disk reads: 292 MB in  3.01 seconds =  97.05 MB/sec

Output of dd to mouted HD: dd if=/dev/zero of=/run/media/oliver/Volume1/zero.bin bs=10M count=100

100+0 Datensätze ein
100+0 Datensätze aus
1048576000 Bytes (1,0 GB) kopiert, 53,6002 s, 19,6 MB/s

Thank you in advance.

Schlunze

Member

Registered: 2013-10-03

Posts: 54

Re: USB 3.0 slow speed again

Output of lshw:

*-pci:3
             description: PCI bridge
             product: NM10/ICH7 Family PCI Express Port 4
             vendor: Intel Corporation
             physical id: 1c.3
             bus info: pci@0000:00:1c.3
             version: 02
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:43 ioport:1000(size=4096) memory:f9f00000-f9ffffff ioport:80200000(size=2097152)
           *-usb
                description: USB controller
                product: uPD720200 USB 3.0 Host Controller
                vendor: NEC Corporation
                physical id: 0
                bus info: pci@0000:02:00.0
                version: 03
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi msix pciexpress xhci bus_master cap_list
                configuration: driver=xhci_hcd latency=0
                resources: irq:19 memory:f9ffe000-f9ffffff
              *-usbhost:0
                   product: xHCI Host Controller
                   vendor: Linux 3.11.3-1-ARCH xhci_hcd
                   physical id: 0
                   bus info: usb@5
                   logical name: usb5
                   version: 3.11
                   capabilities: usb-3.00
                   configuration: driver=hub slots=2 speed=5000Mbit/s
              *-usbhost:1
                   product: xHCI Host Controller
                   vendor: Linux 3.11.3-1-ARCH xhci_hcd
                   physical id: 1
                   bus info: usb@2
                   logical name: usb2
                   version: 3.11
                   capabilities: usb-2.00
                   configuration: driver=hub slots=2 speed=480Mbit/s

Some people maybe have an firmware problems with NEC too?