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  1. Core Server
  2. SERVER-23391

Improve behavior when running under WiredTiger on machines with little memory

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Details

    • Improvement
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.3.5
    • Admin, WiredTiger
    • None
    • Storage Execution
    • Fully Compatible

    Description

      If mongod is run on a machine with a very small amount of memory, for example <1 GB, it still configures a default 1 GB cache. This will almost certainly result in eventual failure of mongod when cache usage approaches the configured maximum and memory is exhausted. We could improve the user experience by either

      • fail early - refuse to start up in such a configuration
      • configure WT with a smaller cache by default

      Attachments

        Issue Links

          depends on

          Task - A task that needs to be done. SERVER-23658 Lower default wiredTigerCacheSizeGB to 50% of available memory

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-23538 should scale TCMalloc cache based on machine size

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          is documented by

          Task - A task that needs to be done. DOCS-7669 wiredTigerCacheSizeGB, inMemorySizeGB default and floor lowered and can now be specified as a float

          • Critical - P2 - Crashes, loss of data, severe memory leak.
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-27131 While inserting records into MongoDB, the used memory of the instance running MongoDB keeps growing until it is shutdown

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-23362 Memory leak symptom in wiredtiger node with 1GB of memory

          • Major - P3 - Major loss of function.
          • Closed
          related to

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-23624 Allow wiredTigerCacheSizeGB to be specified as a float

          • Major - P3 - Major loss of function.
          • Closed

          Activity

            People

              backlog-server-execution Backlog - Storage Execution Team
              bruce.lucas@mongodb.com Bruce Lucas (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: