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    ethernet transmit speed is very slow

    Discussion in 'VAIO / Sony' started by skysky, Nov 10, 2010.

  1. skysky

    skysky Newbie

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    Hi
    I have a F and a FW series laptop and I have a problem with their ethernet. my receive speed in these laptops doesn't have any problem. but transmit is very slow (about 30Mbps). When I connect these laptops to another PCs or laptops I can receive with about 700Mbps but the transmit is about 30Mbps I did a lot of tests with various bandwidth tester softwares and file copying and etc.

    does any one know what's this problem for?
     
    skysky, Nov 10, 2010
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  2. trieudoahong

    trieudoahong Notebook Consultant

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    Did you enable jumbo frame? I got 75MB/s with 1Gbps ethernet.
     
    trieudoahong, Nov 10, 2010
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  3. skysky

    skysky Newbie

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    yes, I tried jumbo with 1514 and 9014 values. I also disabled flow control and my power management is at best performance mode. I don't know if there is other options to make my transmit slow. I don't have this problem with other PCs. I Even did that test with IBM laptops and there's no any problem. The problem is just with my VAIO laptops.
    one other thing is that my VAIOs are VPCF126FM and FW590. Both of them use Marvell Yukon 88E8057 PCI-E Gigabit Ethernet Controller.
     
    skysky, Nov 10, 2010
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  4. trieudoahong

    trieudoahong Notebook Consultant

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    My vaio using intel chip. You connect via switch or cross-over between 2 pc?
     
    trieudoahong, Nov 10, 2010
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  5. skysky

    skysky Newbie

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    I use cross-over. I think it's not a hardware problem. May be it's related to driver or win7. I'm going to do some tests with linux.
     
    skysky, Nov 10, 2010
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  6. skysky

    skysky Newbie

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    My problem solved. I just downloaded the last version driver from marvell support web site : Marvell: Support

    I hope it can help some one.

    Thanks trieudoahong for your replies.
     
    skysky, Nov 11, 2010
    #6