databendlabs / openraft / 24178945835

86%

Build Type

push

github

Committed by drmingdrmer

Commit Message

feat: add log stage display to RuntimeStatsDisplay

Display log stage latency data in all three RuntimeStatsDisplay modes:

- **Compact**: inline `log_stages(us): {name: [stats], ...}`
- **Multiline**: percentile summary per stage, plus per-segment
  timeline from `LogStages::segments()` (pre-rendered as a String
  to erase the `Instant` type parameter)
- **Human-readable**: tabled percentile grid, followed by a stacked
  `AsciiChart` showing the latency distribution across all 5 stages

Changes:
- Add `ascii_chart()` on `LogStageHistograms` to build a stacked
  `AsciiChart` from the 5 stage-to-stage histograms
- Add `log_stage_histograms` and `log_stages_display` fields to
  `RuntimeStatsDisplay`
- Add unit tests for all 3 display modes including human-readable
  with log-normal distributed test data

Coverage Stats

180 of 191 new or added lines in 4 files covered. (94.24%)

28 existing lines in 5 files now uncovered.

16194 of 18753 relevant lines covered (86.35%)

121802.14 hits per line