Provided by: numactl_0.9-1_i386 bug

NAME

       numastat - Print statistics about NUMA memory allocation

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
       allocation 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
       allocated 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.