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    Linux Error: page allocation failure: order:1, mode:0x20


    On a Linux Server we hit with following Errors, page allocation failure: order:1, mode:0x20. 

    Swapper is unable to allocate memory due to page allocation failure. We need Apply following tuneble to alleviate this condition.

    1. Increase vm.min_free_kbytes value, for example to a higher value than a single allocation request.
    vi /etc/sysctl.conf
    vm.min_free_kbytes = 131072

    2. Change vm.zone_reclaim_mode to 1 , so the system can reclaim back memory from cached memory.

     vm.zone_reclaim_mode = 1

     sysctl -p /etc/sysctl.conf

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