HDD copying to usb, etc.SLOW (hdparm?)

[danielfm]

I find hdd speed quite slow when copying something to a usb key compared to when I do on any other device at home, but I am not sure if it's the normal speed or I should need some tweaking.

here is the outpot of hdparm:

hdparm -tT /dev/sda

/dev/sda:
Timing buffer-cache reads: 42 MB in 0.51 seconds = 82847 kB/s
Timing buffered disk reads: 25 MB in 3.16 seconds = 8095 kB/s

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Also without options hdparm seems to say UDMA and other flags are not compatible with my harddisk but I'd say that is not correct, as it is a 1TB disk with UDMA, etc so maybe it's something related to popcorn hdd drivers?

hdparm /dev/sda

/dev/sda:
hdparm: HDIO_GET_MULTCOUNT: Inappropriate ioctl for device
IO_support = 0 (default 16-bit) <---- ?????
hdparm: HDIO_GET_UNMASKINTR: Inappropriate ioctl for device
hdparm: HDIO_GET_DMA: Inappropriate ioctl for device <----????
hdparm: HDIO_GET_KEEPSETTINGS: Inappropriate ioctl for device
readonly = 0 (off)
readahead = 256 (on)
geometry = 56065/255/63, sectors = 1953525168, start = 0

Thanks for any tips!

[Pain]

USB keys are usually very slow, particularly when writing. 8 MB/s is probably just right.

[danielfm]

what i meant is that the hardisk is slow copying to a usb compared to when I do the same in pc, truth is the hdd is too slow overall. And those hdparm tests show too slow speed. No tips?

[Willem53]

The tip is... to not compare performance of the NMT system to the PC system.
The bottleneck is not the diskspeed of HDD or USB but the systembus moving the data from A to B.

[danielfm]

Alright, getting a new hardware then.