Hello,
I have an hdd-in-a-box with a USB interface, the brand is LaCie. Thing is when I use it with linux I can only get about 2mbytes write speed to it and about 1mbyte read from it. And while doing copy/write I get about 35-40% system cpu usage. On the windows machine I get much more then that in transfer rates, about 5mbytes each way I`d say. How come this happens? Though i have to tell the windows boxes are not the same box that has linux installed, so maybe it is a hardware issue.
The chipset on the motherboard is :
----------------------
00:00.0 Host bridge: VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x] (rev c4)
00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)
00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:07.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 16)
00:07.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 16)
00:07.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
00:07.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 Audio Controller (rev 50)
----------------------
I`m see this when I connect the drive to the box in dmesg: ---------------------- usb 2-2: new full speed USB device using address 10 scsi7 : SCSI emulation for USB Mass Storage devices Vendor: WDC Model: WD1600BB-00DWA0 Rev: 15.0 Type: Direct-Access ANSI SCSI revision: 02 SCSI device sda: 312581808 512-byte hdwr sectors (160042 MB) sda: assuming drive cache: write through sda: sda1 Attached scsi disk sda at scsi7, channel 0, id 0, lun 0 USB Mass Storage device found at 10 ----------------------
I`m running a 2.6.5 kernel that comes with Fedora Core 2.
Any thought would be appreciated.
Anton Yurchenko
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