gistfile1.txt

$ curl -s -u adm:pass localhost:15984/_node/_local/_transient_stats | jq '.transient.couch_file."/home/vagrant/src/couchdb/dev/lib/node1/data/dbs/shards/00000000-1fffffff/foo"'
{
  "writes": {
    "count": {
      "value": 382,
      "type": "counter"
    },
    "latency": {
      "value": {
        "min": 0,
        "max": 9,
        "arithmetic_mean": 0.1103448275862069,
        "geometric_mean": 2.704755420028063,
        "harmonic_mean": 55.53191489361702,
        "median": 0,
        "variance": 0.6405172413793104,
        "standard_deviation": 0.8003232105713981,
        "skewness": 9.730555806440028,
        "kurtosis": 102.63472741826932,
        "percentile": [
          [
            50,
            0
          ],
          [
            75,
            0
          ],
          [
            90,
            0
          ],
          [
            95,
            0
          ],
          [
            99,
            2
          ],
          [
            999,
            9
          ]
        ],
        "histogram": [
          [
            1,
            141
          ],
          [
            2,
            3
          ],
          [
            3,
            0
          ],
          [
            4,
            0
          ],
          [
            5,
            0
          ],
          [
            6,
            0
          ],
          [
            7,
            0
          ],
          [
            8,
            0
          ],
          [
            9,
            1
          ],
          [
            10,
            0
          ]
        ],
        "n": 145
      },
      "type": "histogram"
    },
    "bytes": {
      "value": 86212,
      "type": "counter"
    }
  },
  "reads": {
    "latency": {
      "value": {
        "min": 0,
        "max": 11,
        "arithmetic_mean": 0.4022082018927445,
        "geometric_mean": 2.534876442503504,
        "harmonic_mean": 8.752629913165865,
        "median": 0,
        "variance": 1.400847527257076,
        "standard_deviation": 1.1835740480667343,
        "skewness": 4.427368733660441,
        "kurtosis": 24.979550159022605,
        "percentile": [
          [
            50,
            0
          ],
          [
            75,
            0
          ],
          [
            90,
            1
          ],
          [
            95,
            3
          ],
          [
            99,
            6
          ],
          [
            999,
            11
          ]
        ],
        "histogram": [
          [
            1,
            1151
          ],
          [
            2,
            51
          ],
          [
            3,
            26
          ],
          [
            4,
            14
          ],
          [
            5,
            8
          ],
          [
            6,
            10
          ],
          [
            7,
            3
          ],
          [
            8,
            1
          ],
          [
            9,
            1
          ],
          [
            10,
            0
          ],
          [
            11,
            3
          ],
          [
            12,
            0
          ]
        ],
        "n": 1268
      },
      "type": "histogram"
    },
    "bytes": {
      "value": 11320,
      "type": "counter"
    },
    "count": {
      "value": 2830,
      "type": "counter"
    }
  }
}