Yibo Cai created ARROW-9344:
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Summary: [C++][Flight] measure latency quantile in flight benchmark
Key: ARROW-9344
URL: https://issues.apache.org/jira/browse/ARROW-9344
Project: Apache Arrow
Issue Type: Improvement
Components: C++, FlightRPC
Reporter: Yibo Cai
Assignee: Yibo Cai
ARROW-9206 measures average latency in flight benchmark.
In practice, latency quantile is necessary to show the whole picture of rpc
performance. E.g., 99% quantile, max, median.
A naive approach to save latencies of all batches is not applicable. Boost
accumulator_set implements p square quantile algorithm which uses O(1) space
with trivial computation overhead for each batch. It can be used in calculating
latency quantiles.
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