Question

With monogdb, I can run db.collection.stats() to find the size, in bytes, for each index.

PyMongo seems to be missing this operation.

Is there a way to find this information with PyMongo?

Answer 1

import pymongo
connect = pymongo.Connection('mongodb://localhost', safe=True)
db = connect.test
db.command('collStats', 'collection')

Result:

{
  u'count': 2,
  u'ns': u'test.test2',
  u'ok': 1.0,
  u'lastExtentSize': 8192,
  u'avgObjSize': 94.0,
  u'totalIndexSize': 8176,
  u'systemFlags': 1,
  u'userFlags': 0,
  u'numExtents': 1,
  u'nindexes': 1,
  u'storageSize': 8192,
  u'indexSizes': {u'_id_': 8176},
  u'paddingFactor': 1.0,
  u'size': 188
}

P.S. test2 in the result is my collection name

• http://api.mongodb.org/python/current/api/pymongo/database.html
• http://docs.mongodb.org/manual/reference/collection-statistics/