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  1. MariaDB Server
  2. MDEV-23502

Performance testing for packed keys in Unique objects

Details

    • Task
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • N/A
    • Optimizer
    • None

    Description

      This tasks relates to analysing performance of the implementation of packed keys in Unique implemented in MDEV-21829.

      Performance should be tested with

      • EITS
      • COUNT(DISTINCT col)
      • GROUP_CONCAT(DISTINCT col1,col2....)
      • Index merge (no packing here but we should not get regressions here)

      Attachments

        Issue Links

          relates to

          New Feature - A new feature of the product, which has yet to be developed. MDEV-21829 Use packed sort keys in Unique objects

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

          Activity

            Ascending order - Click to sort in descending order
            varun Varun Gupta (Inactive) added a comment -

            The scripts for benchmarking are here
            https://github.com/varunraiko/sort-benchmark

            git clone https://github.com/varunraiko/sort-benchmark.git
            		 
            cd sort-benchmark
            		 
            bash 01-setup-trees.sh
            		 
            bash 02-run-sort-int-bench.sh count_distinct
            		 
            bash 06-run-varchar-bench.sh count_distinct

            varun Varun Gupta (Inactive) added a comment - The scripts for benchmarking are here https://github.com/varunraiko/sort-benchmark git clone https://github.com/varunraiko/sort-benchmark.git cd sort-benchmark bash 01-setup-trees.sh bash 02-run-sort-int-bench.sh count_distinct bash 06-run-varchar-bench.sh count_distinct
            varun Varun Gupta (Inactive) added a comment -

            Results for the first run:

            https://docs.google.com/spreadsheets/d/1lJt4m-9Gifo8x6ago0VjtxrBN5qepWCfi1xJczwOcQo/edit?usp=sharing

            varun Varun Gupta (Inactive) added a comment - Results for the first run: https://docs.google.com/spreadsheets/d/1lJt4m-9Gifo8x6ago0VjtxrBN5qepWCfi1xJczwOcQo/edit?usp=sharing

            People

              psergei Sergei Petrunia
              varun Varun Gupta (Inactive)
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              Dates

                Created:
                Updated:

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