ClusterCockpit/cc-metric-collector
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cc-metric-collector/collectors/numastatsMetric.md
Thomas Roehl fcc25f7d30 Add collector documentation
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numastat collector

  "numastat": {}

The numastat collector reads data from /sys/devices/system/node/node*/numastat and outputs a handful memoryDomain metrics. See: https://www.kernel.org/doc/html/latest/admin-guide/numastat.html

Metrics:

  • numastats_numa_hit: A process wanted to allocate memory from this node, and succeeded.
  • numastats_numa_miss: A process wanted to allocate memory from another node, but ended up with memory from this node.
  • numastats_numa_foreign: A process wanted to allocate on this node, but ended up with memory from another node.
  • numastats_local_node: A process ran on this node's CPU, and got memory from this node.
  • numastats_other_node: A process ran on a different node's CPU, and got memory from this node.
  • numastats_interleave_hit: Interleaving wanted to allocate from this node and succeeded.