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  1. MariaDB Server
  2. MDEV-11284

Extremely high cpu usage and slow performance after upgrade from 5.5.52 to 10.1.29

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    Description

      After upgrade from MariaDB 5.5.52 to 10.1.19 the performance of our application is about 5 times slower than before.

      It is noticeable that the MariaDB 10.1.19 has a cpu usage of 95%.
      With MariaDB 5.5.52 the cpu usage was only about 5%.

      I appended 2 pictures which shows the difference between these 2 versions.
      For both versions we used the same server with the same test application.
      The only difference is the upgrade of MariaDB.

      The settings of my.ini are appended.

      Attachments

        1. callstacks_10_1_19.txt
          43 kB
          Vladislav Vaintroub
        2. MariaDB_5.5.52.png
          78 kB
          Michael Graf
        3. MariaDB 10.1.19 caches 40000.png
          111 kB
          Michael Graf
        4. MariaDB 10.1.19 caches 400000.png
          77 kB
          Michael Graf
        5. my.ini
          1 kB
          Michael Graf
        6. mysqld.exe_161128_064117.001
          10.00 MB
          Michael Graf
        7. mysqld.exe_161128_064117.002
          7.03 MB
          Michael Graf
        8. mysqld.exe_161128_064117.crc
          0.1 kB
          Michael Graf
        9. mysqld.exe_161202_180716.001
          10.00 MB
          Michael Graf
        10. mysqld.exe_161202_180716.002
          10.00 MB
          Michael Graf
        11. mysqld.exe_161202_180716.003
          10.00 MB
          Michael Graf
        12. mysqld.exe_161202_180716.004
          10.00 MB
          Michael Graf
        13. mysqld.exe_161202_180716.005
          10.00 MB
          Michael Graf
        14. mysqld.exe_161202_180716.006
          10.00 MB
          Michael Graf
        15. mysqld.exe_161202_180716.007
          10.00 MB
          Michael Graf
        16. mysqld.exe_161202_180716.008
          10.00 MB
          Michael Graf
        17. mysqld.exe_161202_180716.009
          10.00 MB
          Michael Graf
        18. mysqld.exe_161202_180716.010
          10.00 MB
          Michael Graf
        19. mysqld.exe_161202_180716.011
          10.00 MB
          Michael Graf
        20. mysqld.exe_161202_180716.012
          10.00 MB
          Michael Graf
        21. mysqld.exe_161202_180716.013
          10.00 MB
          Michael Graf
        22. mysqld.exe_161202_180716.014
          10.00 MB
          Michael Graf
        23. mysqld.exe_161202_180716.015
          207 kB
          Michael Graf
        24. mysqld.exe_161202_180716.crc
          0.1 kB
          Michael Graf
        25. mysqld.exe.2160.001
          10.00 MB
          Michael Graf
        26. mysqld.exe.2160.002
          1.42 MB
          Michael Graf
        27. mysqld.exe.2160.crc
          0.1 kB
          Michael Graf
        28. Performance of MariaDB 10.1.19.png
          221 kB
          Michael Graf
        29. Performance of MariaDB 5.5.52.png
          258 kB
          Michael Graf
        30. procdump_output.txt
          4 kB
          Michael Graf
        31. status.txt
          492 kB
          Michael Graf
        32. TimeMeasurement for SQLStatements of MariaDB 10.1.19.txt
          21 kB
          Michael Graf
        33. TimeMeasurement for SQLStatements of MariaDB 5.5.52
          21 kB
          Michael Graf

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          People

            axel Axel Schwenke
            migra Michael Graf
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            Dates

              Created:
              Updated:
              Resolved:

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