oplog length affect on memory

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    • Type: Question
    • Resolution: Done
    • Priority: Major - P3
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    • Affects Version/s: 2.0.3
    • Component/s: Performance
    • Environment:
      RHEL 5.6
      one primary and three standby replica sets.
      Local disk storage with RAID 10
      RAM : 72GB
      Db size: 73GB
      OPLOG : 20GB
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    • 3
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      Hi,

      We want to change the oplog size to 50GB on primary database because of the stale replication issues.
      after increasing the oplog,Will the local database(50GB) would be a part of mapped memory by mongod?

      what should be the impact on overall database performance in a replication/journal enabled environment, if the size of the database is larger than the available physical memory on the system.

      Thanks,
      Rajesh Bhatt

            Assignee:
            Andy Schwerin
            Reporter:
            rajesh bhatt
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              Created:
              Updated:
              Resolved: