Kernel Loading very slowly



  • I am running FOG 0.32 on Ubuntu server 10.04.4.

    When I try to image more than two computers at once, the PXE boot process takes as much at 5 minutes to load the kernel. I’ve tried increasing the ramdisk size and increasing the TFTPD block size. No joy.

    The server is connected to a gigabit port on our switch. Image load times are about 10 minutes for a 10-13GB image, so network speed does not seem to be an issue.

    Has anyone experienced this or does anyone have any suggestions on where to look?

    Paul



  • All the clients are connected to the gigabit switch and are using gigabit ports.

    [quote=“Zardan, post: 1859, member: 185”]Are the clients also connected to a gigabit switch? 10min for that size sounds like ~100mbit speeds.
    Ive had the exact same issue when imaging a computer lab that had a old switch with only 100mbit ports, replacing it with a switch that had 1000mbit uplink to the rest of the network fixed the issue for me. Tftp traffic seems to take big hit when the network is overloaded.
    If everything looks ok make sure the server have negotiated 1000mbit with the switch.[/quote]



  • Are the clients also connected to a gigabit switch? 10min for that size sounds like ~100mbit speeds.
    Ive had the exact same issue when imaging a computer lab that had a old switch with only 100mbit ports, replacing it with a switch that had 1000mbit uplink to the rest of the network fixed the issue for me. Tftp traffic seems to take big hit when the network is overloaded.
    If everything looks ok make sure the server have negotiated 1000mbit with the switch.


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