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  1. Core Server
  2. SERVER-1123

better stats reporting for sizes

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    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.5.3
    • Component/s: None
    • Labels:
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      Description

      A couple requests and a bug I think..there appears to be a missmatch of sizes from intra mongo to OS level:

      1) I think it would be nice to have a breakdown of overall sizes for a database. So db.stats() is global and db.test.stats() is just for the test db.
      2) It would be great if we could see a breakdown of all collections and sizes. For instance:

      db.test.collectionstats()

      {
      foo:

      { objects: 9999, dataSize 88585, storageSize: 85858585, ....}

      mybigcollection:

      { objects: 9999, dataSize 88585, storageSize: 85858585, ....}

      baz:

      { objects: 9999, dataSize 88585, storageSize: 85858585, ....}

      }

      There appears to be a mis-match of sizes. I think it would be nice to call out sizes more specifically. For instance:

      dataSize: size of extents, actual data used on disk.
      indexSize: size of indexes, actual index size on disk
      storageSize: size of indexes + data size on disk
      totalStorage: size of datafiles on disk. totalStorage - storageSize = freespaceSize
      freespaceSize: amount of freespace allocated in the database
      oplogSize: total size of oplog

      root@al01>cd /home/kgorman/mongodata/test/
      root@al01>mongo
      MongoDB shell version: 1.5.1
      url: test
      connecting to: test
      type "help" for help
      > db.stats()
      {
      "collections" : 3,
      "objects" : 8284667,
      "dataSize" : 2081753204,
      "storageSize" : 2235783936,
      "numExtents" : 26,
      "indexes" : 3,
      "indexSize" : 1304103744,
      "ok" : 1
      }
      >
      root@al01>ls -al /home/kgorman/mongodata/test/
      total 4148212
      drwxr-xr-x 2 root root 4096 May 14 14:07 .
      drwxr-xr-x 6 kgorman kgorman 4096 May 14 14:03 ..
      rw------ 1 root root 67108864 May 14 14:03 test.0
      rw------ 1 root root 134217728 May 14 14:03 test.1
      rw------ 1 root root 268435456 May 14 14:03 test.2
      rw------ 1 root root 536870912 May 14 14:04 test.3
      rw------ 1 root root 1073741824 May 14 14:05 test.4
      rw------ 1 root root 2146435072 May 14 14:07 test.5
      rw------ 1 root root 16777216 May 14 14:03 test.ns

      > db.stats()
      {
      "collections" : 3,
      "objects" : 8284667,
      "dataSize" : 2081753204,
      "storageSize" : 2235783936,
      "numExtents" : 26,
      "indexes" : 3,
      "indexSize" : 1304103744,
      "ok" : 1
      }
      > bye
      root@al01>bc
      bc 1.06
      Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
      This is free software with ABSOLUTELY NO WARRANTY.
      For details type `warranty'.
      1304103744+2081753204
      3385856948

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            Assignee:
            redbeard0531 Mathias Stearn
            Reporter:
            kgorman Kenny Gorman
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              Dates

              Created:
              Updated:
              Resolved: