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Thread: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

  1. #1
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    Default Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    Hi, I'm new to the forum although I've used SUSE since 10series. It's also because I've never had any big problem. The last openSUSE I used without problems was/is 11.2(I still use it as main desktop because of problems since 11.3).
    The problem is - the DL speed is repeatedly drops down to around 156KB/s albeit my top speed of router-NIC combination is at 21-22MB/s. When this happen and open network manager and click/reload my wifi or restart wireless or even computer, the speed is back at the top. But after few seconds, minutes it drops down again, and so on. I made some images(to see it on the network manager draphs):



    after that drop-off:



    and restart wireless:



    Best chance to see it is when downloading more files with FreeRapidDownloader or JDownloader.
    Upload speed is OK. The first time I've seen this problem in 11.3, which i've skipped in hope that 11.4 will be ok and now, as the EOL of 11.2 is coming I'd like to go on.
    It's also desktop and installation media independent(Gnome works similar, DVD, LiveCD).
    I've checked many other distributions and none of them had this problem. But openSUSE is my love, so i need and want to solve it
    11.2 is still on the notebook(Asus A6Jc) so we can compare configurations if needed.

    Thanks in advance.

  2. #2
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    Smile Re: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    Hello lueric and welcome to the openSUSE forum. Sorry to hear of your problems. I wonder if you might use the following speed test and see what you get there:

    Speedtest.net - The Global Broadband Speed Test

    When I run the test using Time Warner Cable's Road Runner service I get: Ping 21 ms, Download Speed 16.66 Mbps, Upload Speed 0.48 Mbps. What do you show using your service?

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  3. #3
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    Default Re: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    Thanks jdmcdaniel3 for the reply.
    The test showed Ping 5ms, Download 21,93Mbps, Upload 4,24Mbps. Now the speed is ok.
    5 minutes after and 7ms, D 0,76Mbps, U 4,23Mbps and now it's not OK

  4. #4
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    Smile Re: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    So I have no idea what might be going on, but since you have a second computer you could test with this (Like your openSUSE 11.2 you mention)? Have you considered contacting your ISP to see if there might be a problem with the system? While not the same issue at all, but lately some have been having issues IVP6 and some have had DNS issues as well. Now both of these could be bad and your throughput still be good I know, but all can be related to the ISP (as well as some local settings). Recently I had to switch my DNS settings due to issues locating the openSUSE forums and I switched to the Google DNS servers for now at:

    Code:
    Google  
    
    8.8.8.8 
    8.8.4.4
    I am afraid I have no other suggests at this time except it is possible to update your kernel to 2.6.38.4 at present which might help. I am running this myself and while I have not see the speed issue you have, other oddities are fixed in the 2.6.38 kernel. Just let me know if you would like to try this.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  5. #5
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    Default Re: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    ISP? Well I think the only answer I would got is that they only support Windows and not linux. But there's also Win XP on the notebook and there's everything OK, as on openSUSE 11.2. Recently I've tried on my second linux partition Scientific 6.0, Debian Squeeze, PCLinuxOS, Sabayon 5.5, Ubuntu, Mint and even Arch and there was no problem. But openSUSE best suites my needs - that's why I'm trying to solve it. It's not hard to switch to another distro, but why?
    2.6.38.4 from which repository?

  6. #6
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    Smile Re: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    I think you can install kernel 2.6.38.4 from here:

    Index of /repositories/Kernel:/stable/standard/x86_64

    You can find the most recent (2.6.39-rc4) release here:

    Index of /repositories/Kernel:/HEAD/openSUSE_11.4

    I normally install it from source myself and leave my normal kernels alone and still usable should the compile or install not work. I download any source version from here:

    The Linux Kernel Archives

    Before compiling your own kernel normally you should consider doing the following:

    Open YaST / Software / Software Management - Select the View Button on the top left and pick Patterns. Now, you will see several Patterns listed and you want to select:

    Code:
        Development 
    
    [X] Base Development
    [X] Linux Kernel Development
    [X] C/C++ Development
    Then Press the Accept button on the bottom right and allow these applications to install.

    I have a bash script file you can use to compile your kernel here in message #17:

    S.A.K.C. - SUSE Automated Kernel Compiler - Version 2.00

    In message #22 of the same thread I have a bash script I call klist, to help manage your kernel source files:

    S.A.K.C. - SUSE Automated Kernel Compiler - Version 2.00

    If you use the nVIDIA video driver and normally load it the hard way, I have a bash script here that can help reload it when required in message #12:

    LNVHW - Load NVIDIA (driver the) Hard Way from runlevel 3

    I have kind of used the shotgun approach to helping out, just to see if I can hit the target with something.

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

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    Default Re: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    Thank you for the informations about compilation. Maybe it's just a problem of an automatic configuration. I will try new kernel, but isn't there a way to configure the standard system?

  8. #8
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    Smile Re: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    Thank you for the informations about compilation. Maybe it's just a problem of an automatic configuration. I will try new kernel, but isn't there a way to configure the standard system?
    So when you talk of configuring the network, there are lots of things, but not sure what setting you would adjust in a network configuration that starts off fast and then slows down a lot a few minutes later. You would need some odd incompatibility and of course new kernels include new drivers, a possible fix, but who knows really?

    Thank You,
    My Blog: https://forums.opensuse.org/blogs/jdmcdaniel3/

    Software efficiency halves every 18 months, thus compensating for Moore's Law

    Its James again from Austin, Texas

  9. #9
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    Default Re: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    Thank you jdmcdaniel3 for your advices. I'll try them, but wait for a moment - maybe somebody have similar problem and already solve it. However I doubt, as I don't find any reference about it on the forums. Maybe ...

  10. #10
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    Default Re: Intel 3945ABG, openSUSE 11.3,11.4, repeating DL speed drop-offs

    ... and what do you think about kernel from Tumbleweed. Maybe it would also help.(It would be nice to have quasi-rolling openSUSE)

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