feat: GC pause phase breakdown from debug logs (#115)#119
Merged
Conversation
Add phase-level timing extraction from JDK 17+ unified debug GC logs (-Xlog:gc*=debug). Parses [gc,phases] entries to show per-phase avg/max duration and percentage of total pause. - GcPhaseEvent: data class for phase timing per GC cycle - GcPhaseAnalyzer: aggregates phases across GCs into stats - GcLogParser.parseWithPhases(): extracts both events and phases - GcLogCommand --phases: renders bar-chart phase breakdown Signed-off-by: rlaope <piyrw9754@gmail.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
-Xlog:gc*=debug)[gc,phases]entries to show per-phase avg/max duration and percentage of total pauseargus gclog <file> --phasesrenders bar-chart phase breakdownChanges
GcPhaseEvent— data class for phase timing per GC cycleGcPhaseAnalyzer— aggregates phases across GCs into per-phase statsGcLogParser.parseWithPhases()— extracts both events and phases in single passGcLogCommand --phases— renders bar-chart sectionTest plan
GcPhaseAnalyzerTest— 5 tests (parsing, aggregation, percentages, edge cases)./gradlew :argus-cli:testpassesCloses #115