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Hi all! i have a new seagate SATA hdd but if i copy large files (about 700MB) i got only 12 Mb/sec. but i should be at least 20 or ...
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  1. #1
    Linux Newbie robak's Avatar
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    Jan 2004
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    hdd lacks performance


    Hi all!

    i have a new seagate SATA hdd but if i copy large files (about 700MB) i got only 12 Mb/sec.
    but i should be at least 20 or 25 cuz the read performance is about 50 Mb/sec and the write performance is about 40 Mb/sec.

    does anybody know whats wrong?

    btw.: i got a 2.6.3 kernel if that helps a little bit
    make install not love

    Registered Linux user number 369245

  2. #2
    Linux Engineer kriss's Avatar
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    Is (u)dma enabled? Check with hdparm /dev/hdXX

    Good luck

  3. #3
    Linux Guru fingal's Avatar
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    I think the command you (might) need is hdparm -d1 /dev/myhardrive... This last bit might be hda1 or something similar.
    I am always doing that which I can not do, in order that I may learn how to do it. - Pablo Picasso

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  5. #4
    Linux Newbie robak's Avatar
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    dma is on and here's what hdparm says

    Code:
    /dev/hde
    
    multcount         = 16 (on)
    IO_support      = 0 (default 16-bit)
    unmaskirq         = 0 (off)
    using_dma        = 1 (on)
    keepsettings     = 0 (off)
    readonly           = 0 (off)
    readahead        = 256 (on)
    geometry          = 19457 / 255 / 63, sectors = 312581808, start = 0
    
    hdparm -t /dev/hde1
      Timing buffered disk reads:   52 MB in 3.10 seconds = 16.80 MB/sec
    i hope this can help a little bit.
    make install not love

    Registered Linux user number 369245

  6. #5
    Linux Newbie robak's Avatar
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    Jan 2004
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    is there a prob with the kernel?

    cuz i get the following info aon boot time:

    hde MMIO=pio


    is this normal ?
    make install not love

    Registered Linux user number 369245

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