我有一个问题,外部硬盘的写/读速度通过USB 3.0网桥连接到我的Debian驱动的计算机(实际上,它是HP t5710瘦客户端)。当我将这个硬盘连接到我的Windows PC时,它就像一个魅力,写入/读取速度一样高,我怀疑它们会如此。但是,当我将这个磁盘连接到Debian机器时(通过USB 2.0端口,因为机器上没有3.0端口)速度非常慢(我说的是USB 1.0慢 - 用hdparm记录的最大缓冲磁盘读取大约是1MB /秒)。在我的dmesg中,我发现了这个:
[ 4580.436091] usb 2-2: new full-speed USB device number 2 using ohci-pci
[ 4580.643018] usb 2-2: not running at top speed; connect to a high speed hub
[ 4580.661116] usb 2-2: New USB device found, idVendor=174c, idProduct=1153
[ 4580.661148] usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[ 4580.661164] usb 2-2: Product: AS2115
[ 4580.661180] usb 2-2: Manufacturer: ASMedia
[ 4580.661196] usb 2-2: SerialNumber: 00000000000000000000
[ 4580.671480] usb-storage 2-2:1.0: USB Mass Storage device detected
[ 4580.680674] scsi4 : usb-storage 2-2:1.0
[ 4581.689044] scsi 4:0:0:0: Direct-Access ASMT 2115 0 PQ: 0 ANSI: 6
[ 4581.705548] sd 4:0:0:0: Attached scsi generic sg1 type 0
[ 4581.719003] sd 4:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
[ 4581.725941] sd 4:0:0:0: [sdb] Write Protect is off
[ 4581.725965] sd 4:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 4581.733157] sd 4:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 4581.779086] sdb: sdb1
[ 4581.842995] sd 4:0:0:0: [sdb] Attached SCSI disk
我怀疑,第二行(关于没有运行@最高速度)表明存在问题。不幸的是,由于我是一个完整的Linux菜鸟,我不知道如何让它变得更好。快速谷歌搜索确实显示了一些结果,但所有结果都与使用其他驱动程序(uhci_hcd或其他)的设备有关。你能帮助我,还是至少指出我正确的方向?