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Thread: Network speed slow in openSUSE 11.3?

  1. #1
    Join Date
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    Default Network speed slow in openSUSE 11.3?

    Hi,

    Does anyone know how to revert network speeds to those attained with openSUSE11.2-64?

    On openSUSE11.2-64 the reported network download speed was,
    max : 420 kB/s
    ave : ~ 200 kB/s

    After upgrade to openSUSE 11.3-64 the figures dropped to about 25% of the previous values.
    After upgrade to KDE 4.5 and plasmoid-networkmanagement the initial values did not change but the average value dropped after about 30 seconds to ~ 15 kB/s.

    Approach so far:

    1. The motherboard's (A780GM-LE) build in LAN (Realtek RLT8111DL) was originally detected by openSUSE 11.3 as the Realtek RLT8169 and kernel module r8169 installed.
    This was replaced by the latest module r8168-8.019.00 from Realtek.

    2. After kernel update to Linux 2.6.34.4-0.1-desktop x86_64 the plasmoid-networkmanagement was replace by NetworkManager-kde4. This improved flow with,
    max : 140 kB/s
    ave : ~ 80 kB/s

    Any suggestions gratefully accepted.

  2. #2
    Join Date
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    Default Re: Network speed slow in openSUSE 11.3?

    What kind of network? Windows/Linux

  3. #3

    Default Re: Network speed slow in openSUSE 11.3?

    Download/upload confirmed by DSLreports or The National Broadband Plan: Connecting America ?

    My guess that it was the driver, ie, the RLT8169 but the RLT8111DL is the right driver for your motherboard, 10/100/1000Mb/s ethernet.

    Now my question is whether your router/switch/modem auto-negotiates the 1000mb/s speed or is using the lowest speed?
    Or do you have to set the adapter's speed to 100mb/s. Sometimes the router/switch at 10/100mb/s can't handle the higher speed.
    Box 1: OpenSuse 11.1/Win7 | Linux 2.6.27 Gnome | AMD 64 X2 6000+ | nVidia 8600GT | 2GB RAM
    Box 2: OpenSuse 11.2 | Linux 2.6.31 Gnome | AMD 64 3000+ | ATI X800 Pro | 1GB RAM
    Box 3: Win7 Premium Home | Intel P4 3.0Gz | ATI AIW 2006 | 2GB RAM

  4. #4
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    Default Re: Network speed slow in openSUSE 11.3?

    "Now my question is whether your router/switch/modem auto-negotiates the 1000mb/s speed or is using the lowest speed?
    Or do you have to set the adapter's speed to 100mb/s. Sometimes the router/switch at 10/100mb/s can't handle the higher speed. "

    Everything sets up ok at 100mb/s same as for the old openSUSE 11.2 installation. I havn't seen the 1000mb/s problem since the initial openSUSE 11.1 with the original kernel.

    I'm not having similar problem on openSUSE 11.3-32bit machines on the same network. The speed on the 32 bit machines only used to be about 75% of that achieveable on the 64 bit machine. Now the 32 bit's are running at least 100% faster than the 64 bit machine.

    Thanks for the reply.

  5. #5
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    Default Re: Network speed slow in openSUSE 11.3?

    "What kind of network? Windows/Linux "

    Its a peer to peer network with 2 Windows, 3 Linux machines and 3 printers going to a T-DSL modem for the internet connection. No servers.

    Could it be an "ethernet" network?

  6. #6

    Default Re: Network speed slow in openSUSE 11.3?

    Well you can open up Wireshark or your router to see if you have collisions and dropped packets over the 11.3-64 connection. The other times I've seen extreme dropoff is when the mtu size is corrupt, that should be 1500 or 1492 right? You could turn off IPv6 traffic on the 11.3-64 to see if that helps. Sorry forgot how to do that, as well as dropping the port speed to 100mb/s on the RLT8111DL just to check if its a 100 vs 1000Mb/s issue.
    Box 1: OpenSuse 11.1/Win7 | Linux 2.6.27 Gnome | AMD 64 X2 6000+ | nVidia 8600GT | 2GB RAM
    Box 2: OpenSuse 11.2 | Linux 2.6.31 Gnome | AMD 64 3000+ | ATI X800 Pro | 1GB RAM
    Box 3: Win7 Premium Home | Intel P4 3.0Gz | ATI AIW 2006 | 2GB RAM

  7. #7

    Default Re: Network speed slow in openSUSE 11.3?

    Hi,
    For my PC Network thru YAST is much faster than NetworkManager. May be try it..Good Luck..

  8. #8

    Default Re: Network speed slow in openSUSE 11.3?

    Generally, local networks including wireless are considered "ethernet" vs. other networks.

    Have you checked
    Code:
     ifconfig -a
    for collisions and dropped packets on the slow network port?
    Box 1: OpenSuse 11.1/Win7 | Linux 2.6.27 Gnome | AMD 64 X2 6000+ | nVidia 8600GT | 2GB RAM
    Box 2: OpenSuse 11.2 | Linux 2.6.31 Gnome | AMD 64 3000+ | ATI X800 Pro | 1GB RAM
    Box 3: Win7 Premium Home | Intel P4 3.0Gz | ATI AIW 2006 | 2GB RAM

  9. #9
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    Default Re: Network speed slow in openSUSE 11.3?

    NetworkManager is reporting a 100 Mbits/s connection on all machines. Which is the max speed of switch.

    'ping'ing the switch from all machines show 0% package loss.

    'sudo ifconfig -a' does not work due to setup. So is only done as root with internet physically disconnected.
    No failures show up.

    The OS on the 64 bit machine was an upgrade over openSUSE 11.2. Is it possible the delay is because of remnants of the old OS.

  10. #10

    Default Re: Network speed slow in openSUSE 11.3?

    Quote Originally Posted by keellambert View Post
    NetworkManager is reporting a 100 Mbits/s connection on all machines. Which is the max speed of switch.

    'ping'ing the switch from all machines show 0% package loss.

    'sudo ifconfig -a' does not work due to setup. So is only done as root with internet physically disconnected.
    No failures show up.

    The OS on the 64 bit machine was an upgrade over openSUSE 11.2. Is it possible the delay is because of remnants of the old OS.
    Yes that's possible. Are you thinking about a clean install? Backup data, hidden files and configuration files like hosts*, sudoers, smb.conf, server data in /var/, etc. Hopefully, /home is on a separate partition from the / (root) partition or you'll need to back up even more data.

    Sometimes the *.rpmnew, *.old , *.bak help if there's changes not implemented. But even at 100mb/s thru the router should have the same speeds as the 32bit machines.

    Any standout error messages in /var/log/messages or /var/log/warn about the interfaces or firewall?

    Sorry, but I'm stumped again. You can't run "ifconfig" as ordinary user or while connected because of the setup?

    Are you using knetworkmanager or networkmanager to configure the connection? Or the manual ifup/ifdown?

    Your peer-to-peer network connects your PCs to the router thru the router's internal switch ports or an attached switch?
    Box 1: OpenSuse 11.1/Win7 | Linux 2.6.27 Gnome | AMD 64 X2 6000+ | nVidia 8600GT | 2GB RAM
    Box 2: OpenSuse 11.2 | Linux 2.6.31 Gnome | AMD 64 3000+ | ATI X800 Pro | 1GB RAM
    Box 3: Win7 Premium Home | Intel P4 3.0Gz | ATI AIW 2006 | 2GB RAM

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