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  1. WiredTiger
  2. WT-4447

Add prototype implementation allowing limiting of IO per subsystem

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Details

    • New Feature
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • WT3.2.0, 4.0.7, 4.1.9
    • None
    • None
    • 13
    • Storage Engines 2018-12-03, Storage Engines 2018-12-17, Storage Engines 2018-12-31, Storage Engines 2019-01-14, Storage Engines 2019-01-28, Storage Engines 2019-02-11
    • v4.0

    Description

      The cache management, checkpointing and logging subsystems all use IO. It would be useful to implement a quota like system that can be used to manage IO at a finer granularity.

      Attachments

        1. base5.png
          base5.png
          94 kB
        2. ckpt-stats.png
          ckpt-stats.png
          84 kB
        3. io_capacity=4,20,20.png
          io_capacity=4,20,20.png
          98 kB
        4. io_capacity=4,20,20+os_cache_dirty_max=500k.png
          io_capacity=4,20,20+os_cache_dirty_max=500k.png
          97 kB
        5. log_yields_waiting_file_close.png
          log_yields_waiting_file_close.png
          14 kB
        6. os-cache-dirty-max=500k.png
          os-cache-dirty-max=500k.png
          103 kB
        7. t2-32M.png
          t2-32M.png
          222 kB
        8. t2-35M.png
          t2-35M.png
          220 kB
        9. t2-base-ckpt.png
          t2-base-ckpt.png
          138 kB
        10. t2-dynamic-merged.png
          t2-dynamic-merged.png
          141 kB
        11. t2-fixed.png
          t2-fixed.png
          142 kB
        12. t2-unfixed.png
          t2-unfixed.png
          144 kB
        13. vbig11-0-run2.png
          vbig11-0-run2.png
          80 kB
        14. vbig11-0-run2-5min.png
          vbig11-0-run2-5min.png
          80 kB
        15. vbig11-30M-run2.png
          vbig11-30M-run2.png
          164 kB
        16. vbig11-30M-run2-5min.png
          vbig11-30M-run2-5min.png
          84 kB
        17. vbig11-30M-run2-fixed.png
          vbig11-30M-run2-fixed.png
          81 kB

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. WT-4562 Coverity: possible divide by zero conn_capacity:434

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

          Bug - A problem which impairs or prevents the functions of the product. WT-4576 Coverity warning in conn_capacity.c

          • Major - P3 - Major loss of function.
          • Closed
          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. WT-2350 Optimize file I/O for Azure and for the cloud in general

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

          Technical Debt - WT-4547 Consolidate capacity and block manager bytes written

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

          Activity

            People

              sue.loverso@mongodb.com Susan LoVerso
              jocelyn.del-prado@mongodb.com Jocelyn del Prado
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              Dates

                Created:
                Updated:
                Resolved: