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    Command:

    numastat

    
    
    

    SYNOPSIS

           numastat
    
    
    

    DESCRIPTION

           numastat  displays  NUMA  allocations statistics from the kernel memory
           allocator.  Each process has NUMA policies that specifies on which node
           pages  are  allocated. See set_mempolicy(2) or numactl(8) on details of
           the available policies.  The numastat counters keep track on what nodes
           memory is finally allocated.
    
           The counters are separated for each node. Each count event is the allo-
           cation of a page of memory.
    
           numa_hit is the number of allocations where an allocation was  intended
           for that node and succeeded there.
    
           numa_miss shows how often an allocation was intended for this node, but
           ended up on another node due to low memory.
    
           numa_foreign is the  number  of  allocations  that  were  intended  for
           another node, but ended up on this node.  Each numa_foreign event has a
           numa_miss on another node.
    
           interleave_hit is the number of interleave policy allocations that were
           intended for a specific node and succeeded there.
    
           local_node  is incremented when a process running on the node allocated
           memory on the same node.
    
           other_node is incremented when a process running on another node  allo-
           cated memory on that node.
    
    
    

    SEE ALSO

           numactl(8) set_mempolicy(2) numa(3)
    
    
    

    NOTES

           numastat output is only available on NUMA systems.
    
           numastat  assumes  the output terminal has a width of 80 characters and
           tries to format the output accordingly.
    
    
    

    EXAMPLES

           watch -n1 numastat
           watch -n1 --differences=accumulative numastat
    
    
    

    FILES

           /sys/devices/system/node/node*/numastat
    
    
    

    BUGS

           The output formatting on machines with a large number of nodes could be
           improved.
    
    
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