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  1. Couchbase Server
  2. MB-19837

Increase default number of ep-engine nonIO threads

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Details

    • Task
    • Resolution: Fixed
    • Major
    • 4.1.2, 4.5.1, 4.6.0
    • 3.1.3, 4.1.1, 4.5.0
    • couchbase-bucket
    • None

    Description

      See MB-18452, MB-18453 and CBSE-2414 - we have seen instances where the default number of nonIO threads is insufficient to stay on top of all ready tasks.

      We do need to better understand why the threads are so busy - I've created MB-19791 to investigate one particular scenario where half of a front-end worker thread managed to tie up all 2 nonIO threads - however a more short-term improvement is to simply increase the default number of nonIO threads.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-18452 DCP Consumer (Processor task) may not yield whilst busy

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

          Bug - A problem which impairs or prevents the functions of the product. MB-18453 Task scheduling is not fair!

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

          Task - A task that needs to be done. MB-19791 Investigate performance of DCP 'Processer' task and nonIO thread utilization

          • Major - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. MB-19838 Allow dynamic modification of ep-engine thread counts

          • Major - Major loss of function.
          • Closed
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              dhaikney David Haikney (Inactive)
              drigby Dave Rigby (Inactive)
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                Updated:
                Resolved:

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