Code review turned a 3x speedup into 8.9x (off-heap HdrHistogram in QuestDB)
A community PR ports HdrHistogram off-heap for QuestDB's approx_percentile(): fast in parallel but regressing single-threaded, until review reached 8.9x.
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A community PR ports HdrHistogram off-heap for QuestDB's approx_percentile(): fast in parallel but regressing single-threaded, until review reached 8.9x.