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  1. IMPALA
  2. IMPALA-5632

Investigate use of transparent huge pages for Bloom Filters

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Details

    • Task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • Impala 2.12.0
    • Perf Investigation
    • None
    • 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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          relates to

          Improvement - An improvement or enhancement to an existing feature or task. IMPALA-5519 Allocate fragment instance runtime filter memory from BufferPool

          • Major - Major loss of function.
          • Resolved

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              Unassigned Unassigned
              jbapple Jim Apple
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              Dates

                Created:
                Updated:
                Resolved: