hi! guys. i was trying to achieve the speeds mentioned according to the usb 2.0 specs. http://en.wikipedia.org/wiki/USB_2.0#USB_2.0
i'm not anywhere near it. has anyone else faced similar issues. use case: i've a 16 gig usb 2.0 pen drive and an amd athlon dual core system with usb 2.0 ports. pasting my finding below a...@opensolaris:/media# rmformat Looking for devices... 1. Logical Node: /dev/rdsk/c11t0d0p0 Physical Node: /p...@0,0/pci1043,8...@13,5/stor...@6/d...@0,0 Connected Device: Kingston DT 101 II 1.00 Device Type: Removable Bus: USB Size: 15.3 GB Label: repo0906 Access permissions: Medium is not write protected. Sep 11 20:03:07 opensolaris usba: [ID 912658 kern.info] USB 2.0 device (usb951,1625) operating at hi speed (USB 2.x) on USB 2.0 root hub: stor...@6, scsa2usb1 at bus address 3 Sep 11 20:03:07 opensolaris usba: [ID 349649 kern.info] Kingston DT 101 II 001372982955F961061909AB Sep 11 20:03:07 opensolaris genunix: [ID 936769 kern.info] scsa2usb1 is /p...@0,0/pci1043,8...@13,5/stor...@6 Sep 11 20:03:07 opensolaris genunix: [ID 408114 kern.info] /p...@0 ,0/pci1043,8...@13,5/stor...@6 (scsa2usb1) online Sep 11 20:03:07 opensolaris scsi: [ID 583861 kern.info] sd2 at scsa2usb1: target 0 lun 0 Sep 11 20:03:07 opensolaris genunix: [ID 936769 kern.info] sd2 is /p...@0 ,0/pci1043,8...@13,5/stor...@6/d...@0,0 Sep 11 20:03:07 opensolaris scsi: [ID 107833 kern.warning] WARNING: /p...@0 ,0/pci1043,8...@13,5/stor...@6/d...@0,0 (sd2): Sep 11 20:03:07 opensolaris sd_get_write_cache_enabled: Mode Sense returned invalid block descriptor length Sep 11 20:03:07 opensolaris genunix: [ID 408114 kern.info] /p...@0 ,0/pci1043,8...@13,5/stor...@6/d...@0,0 (sd2) online Sep 11 20:03:07 opensolaris genunix: [ID 314293 kern.info] device pciclass,030...@5(display#0) keeps up device s...@0,0(disk#2), but the latter is not power managed Sep 11 20:03:07 opensolaris pcplusmp: [ID 805372 kern.info] pcplusmp: ide (ata) instance 3 irq 0xf vector 0x45 ioapic 0x2 intin 0xf is bound to cpu 1 a...@opensolaris:/etc/webmin# dd if=/dev/dsk/c11t0d0p0 of=/dev/null bs=32k ^C10042+0 records in 10041+0 records out 329023488 bytes (329 MB) copied, 18.0087 s, 18.3 MB/s a...@opensolaris:~/Azureus Downloads/Fedora-11-i386-DVD# dd if=Fedora-11-i386-DVD.iso of=/dev/rdsk/c11t0d0p0 bs=32k 112421+1 records in 112421+1 records out 3683829760 bytes (3.7 GB) copied, 865.186 s, 4.3 MB/s -- Regards, Arun Tomar blog: http://linuxguy.in website: http://www.solutionenterprises.co.in
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