Returns thread pool statistics for each node in a cluster

GET /_cat/thread_pool

Returned information includes all built-in thread pools and custom thread pools. IMPORTANT: cat APIs are only intended for human consumption using the command line or Kibana console. They are not intended for use by applications. For application consumption, use the nodes info API.

Query parameters

  • time string

    The unit used to display time values.

    Values are nanos, micros, ms, s, m, h, or d.

  • local boolean

    If true, the request computes the list of selected nodes from the local cluster state. If false the list of selected nodes are computed from the cluster state of the master node. In both cases the coordinating node will send requests for further information to each selected node.

  • Period to wait for a connection to the master node.

Responses

GET /_cat/thread_pool
curl \
 -X GET http://api.example.com/_cat/thread_pool
Response examples (200)
[
  {
    "node_name": "string",
    "node_id": "string",
    "ephemeral_node_id": "string",
    "pid": "string",
    "host": "string",
    "ip": "string",
    "port": "string",
    "name": "string",
    "type": "string",
    "active": "string",
    "pool_size": "string",
    "queue": "string",
    "queue_size": "string",
    "rejected": "string",
    "largest": "string",
    "completed": "string",
    "core": "string",
    "max": "string",
    "size": "string",
    "keep_alive": "string"
  }
]