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Author Topic: [DE] USB 3 Port langsam  (Read 3220 times)

jackyohh

  • Guest
[DE] USB 3 Port langsam
« on: 2013/10/15, 02:30:29 »
Hi,

vor einiger Zeit hab ich mir ein Motherboard mit 2x USB 3.0 Anschlüssen zugelegt. Bisher hatte ich kaum große Verwendung dafür, doch letztens fiel mir auf, dass mein USB 3 Stick verdächtig langsam kopierte. Geschätzte 8 MB/s, was genau der Geschw. am USB 2 Port entsprach. Unter Windows hab ich den Stick auch getestet. Die Geschw. lag bei 25 MB/s. Das Dateisystem war fat32. Unter Linux hatte ich ntfs, fat32 und ext4 probiert - kein Unterschied.

Woran kann das liegen??

jackyohh

  • Guest
Re: USB 3 Port langsam
« Reply #1 on: 2013/12/23, 15:24:29 »
... inzwischen bin ich etwas schlauer geworden. Zwar ist mein USB-Stick nach wie vor langsam unter Linux, aber das trifft wohl nur auf den USB-Stick zu. USB 3 hdds von Freunden haben Transferraten von um die 90MB/s. Am USB-Port kann es nicht liegen.

Grüße

Offline ayla

  • User
  • Posts: 1.744
Re: USB 3 Port langsam
« Reply #2 on: 2013/12/23, 16:00:54 »
hmm...

Beides USB3.0 Sticks.

Platinum 64GB an USB3:
Code: [Select]
root@neskaya:/home/cal# hdparm -tT --direct /dev/sde
/dev/sde:
 Timing O_DIRECT cached reads:    86 MB in  2.02 seconds =  42.57 MB/sec
 Timing O_DIRECT disk reads: 130 MB in  3.00 seconds =  43.33 MB/sec
Lexar 16GB an USB3:
Code: [Select]
root@neskaya:/home/cal# hdparm -tT --direct /dev/sde

/dev/sde:
 Timing O_DIRECT cached reads:    86 MB in  2.03 seconds =  42.26 MB/sec
 Timing O_DIRECT disk reads: 128 MB in  3.04 seconds =  42.09 MB/sec


Platinum 64GB an USB2:
Code: [Select]
root@neskaya:/home/cal# hdparm -tT --direct /dev/sde

/dev/sde:
 Timing O_DIRECT cached reads:    76 MB in  2.04 seconds =  37.26 MB/sec
 Timing O_DIRECT disk reads: 110 MB in  3.04 seconds =  36.18 MB/sec
Lexar 16GB an USB2:
Code: [Select]
root@neskaya:/home/cal# hdparm -tT --direct /dev/sde

/dev/sde:
 Timing O_DIRECT cached reads:    72 MB in  2.01 seconds =  35.75 MB/sec
 Timing O_DIRECT disk reads: 108 MB in  3.02 seconds =  35.72 MB/sec


Beide Original Formatierung, der 16GB Fat32 und der andere lt fdisk "Unknown"

Code: [Select]
lspci...
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
04:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller
05:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller...

lsusb
Bus 004 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 004 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

lsusb
Bus 004 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 004 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

lsusb:
Bus 004 Device 004: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 004 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Gruß
ayla
« Last Edit: 2013/12/23, 16:10:04 by ayla »