系统自带的磁盘中的性能测试结果如图所示:
本人的笔记本支持有3.0接口:$ sudo hdparm -Tt /dev/sdb1
/dev/sdb1:
Timing cached reads: 24330 MB in 2.00 seconds = 12177.34 MB/sec
Timing buffered disk reads: 122 MB in 3.00 seconds = 40.65 MB/sec
在插入优盘时dmesg显示如下:$ lsusb
Bus 004 Device 002: ID 8087:8000 Intel Corp.
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 8087:8008 Intel Corp.
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 13d3:3394 IMC Networks
Bus 001 Device 002: ID 093a:2521 Pixart Imaging, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
请问怎样做才能得到其datasheet中应有的速度(read: 100MB/s, write: 15MB/s)?$ dmesg|tail
[124960.599905] usb-storage 2-1:1.0: USB Mass Storage device detected
[124960.600174] scsi host10: usb-storage 2-1:1.0
[124961.599322] scsi 10:0:0:0: Direct-Access Kingston DataTraveler 3.0 PMAP PQ: 0 ANSI: 6
[124961.599973] sd 10:0:0:0: Attached scsi generic sg2 type 0
[124961.600700] sd 10:0:0:0: [sdb] 60555264 512-byte logical blocks: (31.0 GB/28.8 GiB)
[124961.600913] sd 10:0:0:0: [sdb] Write Protect is off
[124961.600916] sd 10:0:0:0: [sdb] Mode Sense: 45 00 00 00
[124961.601474] sd 10:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[124961.751994] sdb: sdb1
[124961.754691] sd 10:0:0:0: [sdb] Attached SCSI removable disk
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2016年1月29日00:10:31更新
经过5楼vickycq提醒,我进入Windows测试了一下,结果如下: 不得不说,看到这样的结果,我就释然了。
感谢帮助我的各位!
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2016年1月30日17:45:28更新
对不起各位,时隔两天,我发现我上面讲的都是错的,原因在硬件,我的USB3.0接口(也许)有些接触不良,导致虽然显示是3.0的带宽,但是传输速度达不到。
用力插入优盘后,什么问题都解决了,速度也正常了,测试在15楼。
感谢所有帮助我的朋友!