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

Memory

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

Workaround: 
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