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  1. Core Server
  2. SERVER-15344

Make replWriter thread pool size tunable

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.1.7
    • Component/s: Replication
    • Labels:
    • Backwards Compatibility:
      Fully Compatible
    • Sprint:
      RPL 7 08/10/15

      Description

      #ifdef MONGO_PLATFORM_64
      		 
          const int ReplSetImpl::replWriterThreadCount = 16;
      		 
          const int ReplSetImpl::replPrefetcherThreadCount = 16;
      		 
      #else
      		 
          const int ReplSetImpl::replWriterThreadCount = 2;
      		 
          const int ReplSetImpl::replPrefetcherThreadCount = 2;
      		 
      #endif

      These are reasonable default, but we can make them tunable (exporting them via serverParameter) so that people can tune according to their needs. This also facilitates perf testing.

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          Issue Links

          is depended on by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-18908 Secondaries unable to keep up with primary under WiredTiger

          • Critical - P2 - Crashes, loss of data, severe memory leak.
          • Closed
          related to

          Task - A task that needs to be done. DOCS-6476 add new replWriterThreadCount param docs for 3.2

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

          Task - A task that needs to be done. SERVER-24292 DataReplicatorExternalState::multiApply should use replWriterThreadCount when creating writer thread pool

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

            Activity

              People

              Assignee:
              matt.dannenberg Matt Dannenberg
              Reporter:
              davide.italiano Davide Italiano
              Participants:
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                Dates

                Created:
                Updated:
                Resolved: