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  1. IMPALA
  2. IMPALA-5632

Investigate use of transparent huge pages for Bloom Filters

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    Details

    • Type: Task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: Impala 2.12.0
    • Component/s: Perf Investigation
    • Labels:
      None
    • Epic Color:
      ghx-label-9

      Description

      See system-allocator.cc for some templates for using madvise. It appears that TLB misses are causing performance degradation in BF lookups. THPs could reduce TLB pressure when the BFs are more than 2MB.

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              • Assignee:
                Unassigned
                Reporter:
                jbapple Jim Apple
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                • Created:
                  Updated:
                  Resolved: