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  1. Core Server
  2. SERVER-86239

Investigate removing large memory deallocations off the hotpath

    • Type: Icon: Task Task
    • Resolution: Gone away
    • Priority: Icon: Major - P3 Major - P3
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    • Query Optimization

      In our investigation of the LargeIndexedIn workload, we found a large amount of CPU cycles spent in ~PlanExecutor, specifically in ~IndexScan which deleted a large vector of OrderedIntervalList. The task of this ticket is to investigate the impact of delaying such a deallocation until after the server has written the response to the client on the wire. There may be other deallocations which can be delayed.

            Assignee:
            backlog-query-optimization [DO NOT USE] Backlog - Query Optimization
            Reporter:
            ben.shteinfeld@mongodb.com Ben Shteinfeld
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