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  1. Ignite
  2. IGNITE-7638

Page replacement process in PDS mode affect segment loaded pages table performance

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.5
    • Component/s: persistence
    • Labels:
      None

      Description

      There is

      • durable memory segment in PDS enabled data region
      • page replacement started

      then Ignite performance slow down occurs, JFR & Visual VM shows get&put from FullPageIdTable requires significiant time to be executed (~5-10% оf samples count and up to 40% CPU usage)

      Avg steps in loaded pages table, get: 9456 steps,  put: 20243 steps,  capacity: 20242 size: 7978
      

      Effect of influence of FullPageID table is cumulative, once it starts to grow, number of steps required grows also.

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              • Assignee:
                dpavlov Dmitriy Pavlov
                Reporter:
                dpavlov Dmitriy Pavlov
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                Dates

                • Created:
                  Updated:
                  Resolved: