Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-57482

Adaptively call wiredtiger_calc_modify

    XMLWordPrintable

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major - P3
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: Backlog
    • Component/s: None
    • Labels:
    • Backport Requested:
      v5.0

      Description

      When updating in wiredtiger record store, wiredtiger_calc_modify is called to attempt to get a diff for faster update. However, when it fails to calculate such a diff, the time goes wasted. For certain workload (e.g. time series), we found that the calculation rarely succeeds and slows down the updates. We would like to implement a general heuristic (not just for time series) to adaptively increase or decrease the frequency on attempting to do the calculation.

      After implementing the heuristic, the "engineering solution" for time-series in the linked ticket should be removed.

        Attachments

          Issue Links

            Activity

              People

              Assignee:
              backlog-server-execution Backlog - Storage Execution Team
              Reporter:
              yuhong.zhang Yuhong Zhang
              Participants:
              Votes:
              0 Vote for this issue
              Watchers:
              10 Start watching this issue

                Dates

                Created:
                Updated: