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  1. #1
    Untangler
    Join Date
    Nov 2008
    Posts
    36

    Default RAM Not Recognized

    Hi,

    I installed Untangle 6.1 (then upgraded to 6.2) on a Dell 2950:

    2 x Quad Core Intel Xeon
    24 GB RAM

    I understand that out of the total 24GB of RAM only 4GB will be recognized as Untangle is 32-bit, but the problem is - only 2GB is seen:

    Here's a portion of the output of dmesg:

    ====

    [ 0.000000] Warning only 4GB will be used.
    [ 0.000000] Use a HIGHMEM64G enabled kernel.
    [ 0.000000] 3200MB HIGHMEM available.
    [ 0.000000] 896MB LOWMEM available.
    [ 0.000000] found SMP MP-table at [c00fe710] 000fe710

    ---

    ~ # free -m [root @ ut]
    total used free shared buffers cached
    Mem: 2006 1015 990 0 27 67
    -/+ buffers/cache: 921 1084
    Swap: 2588 946 1641

    ===


    Any ideas on how to get at least 4GB seen by Untangle?


    Thanks.


    Best,
    Jay

  2. #2
    Untangler dikym's Avatar
    Join Date
    Oct 2008
    Location
    Indonesia
    Posts
    50

    Default

    hi jayjay,

    I just experience a similar thing with you. my customer has a custom server with 2 Quad Core XEON, and 8GB ram. And untangle kernel only detects 2.5GB of RAM. So I'll follow this thread to see if there's a solution for this.

    From other posts I found on the forum, the Untangle kernel is 32 bit (PAE disabled), which is limited to 4GB of max addressable RAM, but in practical should be around 3.5GB available.

    So out of 4GB, you lost 2GB and I lost 1.5GB ...

    I think in order to fully address the whole 24GB RAM you have, you need to have a custom kernel with PAE enabled or go 64bit.

  3. #3
    Master Untangler
    Join Date
    Jul 2008
    Location
    Germany
    Posts
    144

    Default

    Try to boot any linux live cd and check again. Perhaps its a linux problem. Or maybe some strange BIOS setting prevents memory usage...
    My Dual "Dual Core AMD Opteron" with 4GB ram installed sais following:
    Code:
    free -m  
                 total       used       free     shared    buffers     cached
    Mem:          3034       1933       1101          0        507        187
    -/+ buffers/cache:       1238       1795
    Swap:         5789          1       5787

  4. #4
    Untangler dikym's Avatar
    Join Date
    Oct 2008
    Location
    Indonesia
    Posts
    50

    Default

    @frust:
    unfortunately for me it is not an option right now, because that server is live and in production.

    Is there any other way to test it other than reboot it into live CD?

  5. #5
    Master Untangler
    Join Date
    Jul 2008
    Location
    Germany
    Posts
    144

    Default

    So if its already running in production you won't have any chance to fix it. I don't see how you want to modify the running OS to accept more RAM.

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