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File Transfer problems (losing connection)
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Thread: File Transfer problems (losing connection)

  1. #1
    dissekj
    Guest

    File Transfer problems (losing connection)

    I recently moved from running Red Hat 7.3 to MAndrake 9,1 (my "Server" is also my main workstation, so I wanted it prettier ;D). I had backed up all my files to my other computer (running WinXP Pro) in series of large tar files. One of these files (about 7GB) backed up to my windows box at over 6MB/s.

    When I tried to copy this file back, I only was able to get a transfer rate of 10k/s and the connection closed after about 200MB transfered (this was using ftp). I tried the same copy using scp (better speed, 50k/s, died after 140 MB), and samba (20k/s, died after 60MB). I tried to copy a bunch of smaller files (about 200MB total) with similar results. The connection has died at varying times (20mins - 2hrs) with various amounts transferred (25MB - 200MB).

    Mandrake 9.1 Box:
    P3 550
    256MB RDRAM
    40GB Maxtor HD
    Realtek 100MB NIC (myson driver I think)

    XP Pro Box:
    Athlon XP 1800+ (1.5GHz)
    512MB PC2100 SDRAM
    80GB Seagate HD
    100MB NIC

    Does anybody have any ideas? I just don't know enough about this stuff to debug this in any meaningful way. I really, really don't wan't to transfer several thousand 3~20MB files by hand if I can avoid it.

    Thanks.

  2. #2

    Re:File Transfer problems (losing connection)

    I have this same problem. When I'm using my 10 Mbit connection, I only get about 600-800 KB/s. I should be getting 1.5 MB/s. When I'm on my 10/100 I get around 1.5-2.5 MB/s when it should be closer to 12.5 MB/s. I've never really bothered to look into the issue, but perhaps I should actually put some effort into finding out what is the problem.
    AMD Athlon 2200+ 1.8Ghz
    1280MB PC-3200 CAS2.5 RAM
    ATI Radeon 9600 Pro 128MB AGP
    Western Digital WDC WD2500JB-00FUA0 250GB 7200 rpm ATA/133
    Seagate ST3200822A 200GB 7200 rpm ATA/133
    Western Digital WDC WD1200BB-00CAA1 120GB 7200 rpm ATA/133
    Western Digital WDC WD800BB-00CAA1 80GB 7200 rpm ATA/133
    Maxtor OneTouch 2HA43R32 1TB 7200 rpm USB 2.0
    D-Link DFE-530TX+ 10/100 NIC
    D-Link DWL-G520 Rev.A
    Debian 5.0r1 Lenny

  3. #3

    Re:File Transfer problems (losing connection)

    Just ideas
    Drivers?
    Tried another network card? (on both machines)
    Another cable?
    Network Speed Settings?
    Checked for dropped packets?
    Ping times?
    A firewall interfearing somehow?

    ummm......im outta ideas now.

    Seems funny it will go one way fast but slow back again, have you tried moving the files from the windows end and the Linux end?

    Can you swap the cards over to see if it goes fast back the other way? (LOL - seems silly)

    Anyway good luck
    Its better to regret something you have done than to regret something you havent done :P

  4. #4

    Re:File Transfer problems (losing connection)

    hmmm, thanks frisky... but... i think if *Skynet* of all people can't get it working, its not going to... :P :P : : ;D ;D ;D
    cool ideas tho
    whatdoyougetwhenyoumultiplysixbynine??

  5. #5

    Re:File Transfer problems (losing connection)

    I've never really bothered to look into the issue, but perhaps I should actually put some effort into finding out what is the problem
    Bite me! :P
    Its better to regret something you have done than to regret something you havent done :P

  6. #6

    Re:File Transfer problems (losing connection)

    hmmm, i didn't see that :
    whatdoyougetwhenyoumultiplysixbynine??

  7. #7

    Re:File Transfer problems (losing connection)

    Well, I did a little bit of research into this area, not much but a little. I went to http://www.scyld.com/network, and d/l'd tulip-diag.c, and mii-diag.c for this computer. I then compiled the two, and ran a diagnostic on my NIC. Here were my results:

    tulip-diag.c:v2.16 12/17/2002 Donald Becker (becker@scyld.com)
    http://www.scyld.com/diag/index.html
    Index #1: Found a Lite-On 82c168 PNIC adapter at 0x1400.
    Port selection is MII, half-duplex.
    Transmit started, Receive started.
    The Rx process state is 'Waiting for packets'.
    The Tx process state is 'Idle'.
    The transmit threshold is 128.
    MII PHY found at address 1, status 0x782d.
    MII PHY #1 transceiver registers:
    1100 782d 0302 d008 01e1 00a1 0005 2001
    0000 0000 0000 0000 0000 0000 0000 0000
    0000 0001 0000 0000 0000 2954 0000 8062
    0000 0421 0000 0000 0039 0000 0000 0000.

    Basic registers of MII PHY #1: 1100 782d 0302 d008 01e1 00a1 0005 2001.
    Basic mode control register 0x1100: Auto-negotiation enabled. You have link beat, and everything is working OK. Your link partner is generating 100baseTx link beat (no autonegotiation).
    End of basic transceiver information.

    So it seems as though my card is currently running in half-duplex. The real question is who is this link partner. I'm wondering if it's the person I'm currently sending information too, or if it's the hub my NIC is connected too. I think it's the person I'm connected too, because my HUB is 10/100 autoneogtiation. However that HUB is connected to another HUB that is only 10 Mbit non-autonegotiation which then connects to a 10 Mbit ISA card.

    Since I don't do direct transfers from my 800 to my 450 (note: these two PC's have 10/100 NIC's connected to a 10/100 hub). I believe going though the second HUB is what is going to place me at 1.5 Mbits/sec however the speed is actually less then this. I then think that after it goes through that it has to interface with a 10 Mbit ISA NIC which is where I believe even furthur slowdown occurs, and I'm not 100% sure yet, as I've not looked into it, but I believe the ISA NIC may not be capable of full-duplex.
    AMD Athlon 2200+ 1.8Ghz
    1280MB PC-3200 CAS2.5 RAM
    ATI Radeon 9600 Pro 128MB AGP
    Western Digital WDC WD2500JB-00FUA0 250GB 7200 rpm ATA/133
    Seagate ST3200822A 200GB 7200 rpm ATA/133
    Western Digital WDC WD1200BB-00CAA1 120GB 7200 rpm ATA/133
    Western Digital WDC WD800BB-00CAA1 80GB 7200 rpm ATA/133
    Maxtor OneTouch 2HA43R32 1TB 7200 rpm USB 2.0
    D-Link DFE-530TX+ 10/100 NIC
    D-Link DWL-G520 Rev.A
    Debian 5.0r1 Lenny

  8. #8

    Re:File Transfer problems (losing connection)

    hmm, i thinks hubs can only run at half duplex. switches can do full duplex.
    whatdoyougetwhenyoumultiplysixbynine??

  9. #9

    Re:File Transfer problems (losing connection)

    The first HUB I have is 10/100 Dual Speed SOHO Hub w/Switch. The second though is just a 10 Mbit.
    AMD Athlon 2200+ 1.8Ghz
    1280MB PC-3200 CAS2.5 RAM
    ATI Radeon 9600 Pro 128MB AGP
    Western Digital WDC WD2500JB-00FUA0 250GB 7200 rpm ATA/133
    Seagate ST3200822A 200GB 7200 rpm ATA/133
    Western Digital WDC WD1200BB-00CAA1 120GB 7200 rpm ATA/133
    Western Digital WDC WD800BB-00CAA1 80GB 7200 rpm ATA/133
    Maxtor OneTouch 2HA43R32 1TB 7200 rpm USB 2.0
    D-Link DFE-530TX+ 10/100 NIC
    D-Link DWL-G520 Rev.A
    Debian 5.0r1 Lenny

  10. #10

    Re:File Transfer problems (losing connection)

    screw hubs, get a switch or a router, alastair is correct, hubs run half duplex, switch\router runs full duplex.
    also, why not download it via ftp? then if it disconnects on your linux box you can restart it from the point that it was at, its a bitch yet, but it will work also.
    AMD Athlon XP 2500+<br />DFI NFII Ultra Infinity(gigabyte sucks)<br />OCZ 2 x 512 PC3200<br />ATI Radeon AIW 9600 PRO<br />16x DVD-Rom (not in use)<br />LG 8x DVD-Burner<br />LG 40x12x40 CD-RW<br />WD 120GB<br />420W PSU<br />Tweaked out case<br />:)

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