14.7.7. Setting and Displaying the Node Memory Parameters
14.7.7. Setting and Displaying the Node Memory Parameters The node-memory-tune [shm-pages-to-scan] [shm-sleep-milisecs] [shm-merge-across-nodes] command displays and allows you to set the node memory parameters. There are three parameters that may be set with this command: shm-pages-to-scan - sets the number of pages to scan before the shared memory service goes to sleep. shm-sleep-milisecs - sets the number of milliseconds that the shared memory service will sleep before the scan shm-merge-across-nodes - specifies if pages from different NUMA nodes can be merged. Values allowed are 0 and 1 . When set to 0 , the only pages that can be merged are those that are physically residing in the memory area of the same NUMA node. When set to 1 , pages from all of the NUMA nodes can be merged. The default setting is 1 .