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  1. MariaDB ColumnStore
  2. MCOL-5472

CPU wastes time in wait and sys b/c of urandom access in RowStorage.

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Blocker
    • Resolution: Fixed
    • 22.08.8, 23.02.1
    • 23.10.1
    • PrimProc
    • 2023-11

    Description

      There is a stdlib random generator in RowStorage. Every time RowStorage is instantiated this random device tries to access urandom generator causing shared mutex contention and IO.
      The suggested workaround is to either drop the random generator or put it into StorageManager.

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          includes

          Task - A task that needs to be done. MCOL-5609 autotest for disk group by

          • Major - Major loss of function.
          • Closed
          is part of

          Bug - A problem which impairs or prevents the functions of the product. MCOL-5460 concurrent CTE operation excessive mutex

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

          Activity

            People

              drrtuy Roman
              drrtuy Roman
              Sergey Zefirov Sergey Zefirov
              Kirill Perov Kirill Perov (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

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