andygrove opened a new pull request, #1641:
URL: https://github.com/apache/datafusion-ballista/pull/1641
# Which issue does this PR close?
Closes #.
# Rationale for this change
The TPC-H benchmark output is hard to scan when comparing runs. Times
print as milliseconds with one decimal place, the default of three
iterations slows down ad-hoc runs, and there is no overall total at the
end. Aligning the per-query format and JSON summary durations with the
datafusion-comet benchmark makes it easier to compare results between
the two engines.
# What changes are included in this PR?
- Print per-query and average elapsed times in seconds with three
decimal places (microsecond resolution).
- Print a `Total time` line at the end of the run, covering all
queries and iterations.
- Change the default `--iterations` value from 3 to 1 for both the
`ballista` and `datafusion` benchmark subcommands.
- Store JSON summary `elapsed` values in seconds so the file format
lines up with datafusion-comet's `durations` array.
# Are there any user-facing changes?
Yes:
- The default of `--iterations` changes from 3 to 1. Pass
`--iterations 3` explicitly to keep the previous behavior.
- The console output now uses seconds (`s`) with three decimal places
instead of milliseconds (`ms`) with one decimal place.
- `elapsed` values in the JSON summary are now in seconds rather than
milliseconds.
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