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  1. Core Server
  2. SERVER-16353

listDatabases is very slow on wiredtiger primary

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • 2.8.0-rc3
    • Affects Version/s: 2.8.0-rc1
    • Component/s: Storage
    • Fully Compatible
    • ALL
    • None
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      On a process with 67 databases, the following takes approximately 2 seconds on a wiredTiger primary:

      db.runCommand({listDatabases:1});

      If I switch the primary to an mmapv1 node, the command returns within a few milliseconds.

        1. testListDatabases.js
          0.5 kB

            Assignee:
            matt.kangas Matt Kangas (Inactive)
            Reporter:
            cailin.nelson@mongodb.com Cailin Nelson (Inactive)
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              Created:
              Updated:
              Resolved: