$ mvn clean verify -B --no-transfer-progress -DskipPerformanceValidation=true [INFO] Scanning for projects... [WARNING] [WARNING] Some problems were encountered while building the effective model for in.virit:svg-visualizations:jar:1.0.1-SNAPSHOT [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-surefire-plugin is missing. @ line 99, column 21 [WARNING] [WARNING] It is highly recommended to fix these problems because they threaten the stability of your build. [WARNING] [WARNING] For this reason, future Maven versions might no longer support building such malformed projects. [WARNING] [INFO] [INFO] --------------------< in.virit:svg-visualizations >--------------------- [INFO] Building svg-vizualizations 1.0.1-SNAPSHOT [INFO] from pom.xml [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- clean:3.2.0:clean (default-clean) @ svg-visualizations --- [INFO] Deleting /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/svg-visualizations/target [INFO] [INFO] --- flatten:1.7.0:clean (flatten.clean) @ svg-visualizations --- [INFO] Deleting /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/svg-visualizations/.flattened-pom.xml [INFO] [INFO] --- resources:3.3.1:resources (default-resources) @ svg-visualizations --- [INFO] skip non existing resourceDirectory /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/svg-visualizations/src/main/resources [INFO] [INFO] --- flatten:1.7.0:flatten (flatten) @ svg-visualizations --- [INFO] Generating flattened POM of project in.virit:svg-visualizations:jar:1.0.1-SNAPSHOT... [INFO] [INFO] --- compiler:3.13.0:compile (default-compile) @ svg-visualizations --- [INFO] Recompiling the module because of changed source code. [INFO] Compiling 2 source files with javac [debug release 21] to target/classes [INFO] [INFO] --- resources:3.3.1:testResources (default-testResources) @ svg-visualizations --- [INFO] skip non existing resourceDirectory /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/svg-visualizations/src/test/resources [INFO] [INFO] --- compiler:3.13.0:testCompile (default-testCompile) @ svg-visualizations --- [INFO] Recompiling the module because of changed dependency. [INFO] Compiling 13 source files with javac [debug release 21] to target/test-classes [INFO] /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/svg-visualizations/src/test/java/org/vaadin/svgvis/it/SvgVisualizationsIT.java: /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/svg-visualizations/src/test/java/org/vaadin/svgvis/it/SvgVisualizationsIT.java uses or overrides a deprecated API. [INFO] /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/svg-visualizations/src/test/java/org/vaadin/svgvis/it/SvgVisualizationsIT.java: Recompile with -Xlint:deprecation for details. [INFO] [INFO] --- surefire:3.2.5:test (default-test) @ svg-visualizations --- [INFO] Using auto detected provider org.apache.maven.surefire.junitplatform.JUnitPlatformProvider [INFO] [INFO] ------------------------------------------------------- [INFO] T E S T S [INFO] ------------------------------------------------------- [INFO] Running org.vaadin.svgvis.RenderingPerformanceTest Loaded 948423 weather records === System Information === CPU Model: AMD EPYC-Rome Processor CPU Cores: 4 OS: Linux 6.8.0-107-generic Java: 21 (Eclipse Adoptium) Architecture: amd64 === Baseline Info === Last Updated: 2026-04-14T06:39:26.416810613Z Baseline CPU: AMD EPYC-Rome Processor Baseline OS: Linux Loaded 948423 weather records for performance testing 06:40:09.478 [main] INFO com.vaadin.flow.server.DefaultDeploymentConfiguration -- Vaadin is running in production mode. === SparkLine draw() CPU Time Analysis === Measuring time to execute draw() with real components... Data Points | No Smoothing | Moving Avg | RDP -------------|----------------|----------------|---------------- 100 | 2.23 ms | 1.82 ms | 1.17 ms 1,000 | 3.43 ms | 1.49 ms | 2.08 ms 10,000 | 10.95 ms | 2.57 ms | 4.62 ms 49,871 | 26.40 ms | 3.86 ms | 45.29 ms 97,643 | 45.85 ms | 5.53 ms | 6.40 ms 495,995 | 254.88 ms | 38.47 ms | 22.52 ms 944,282 | 467.09 ms | 99.17 ms | 73.34 ms Note: Times include full SVG element creation and DOM operations. === WindRose draw() CPU Time Analysis === Measuring time to aggregate and draw WindRose with real components... Input Records | Aggregation | Draw | Total --------------|----------------|----------------|---------------- 1,000 | 458.7 µs | 833.3 µs | 1.29 ms 10,000 | 1.57 ms | 728.9 µs | 2.30 ms 50,000 | 7.44 ms | 706.9 µs | 8.15 ms 100,000 | 4.00 ms | 578.6 µs | 4.58 ms 500,000 | 20.39 ms | 612.5 µs | 21.01 ms 948,423 | 40.59 ms | 653.3 µs | 41.25 ms Note: WindRose aggregation is O(n), but draw is O(sectors) = O(1). === Scaling Behavior Analysis === Comparing how draw time scales with data size... Multiplier | Data Size | NONE (rel) | MovingAvg (rel) | RDP (rel) -----------|--------------|----------------|-----------------|---------------- 1x | 10,000 | 4.28 ms ( 0.8x) | 857.4 µs ( 0.5x) | 605.0 µs ( 0.6x) 2x | 19,996 | 8.93 ms ( 1.6x) | 2.43 ms ( 1.5x) | 880.0 µs ( 0.9x) 5x | 49,871 | 24.40 ms ( 4.3x) | 3.34 ms ( 2.0x) | 2.72 ms ( 2.9x) 10x | 97,643 | 48.77 ms ( 8.7x) | 4.05 ms ( 2.5x) | 4.46 ms ( 4.8x) 20x | 196,569 | 94.26 ms (16.8x) | 9.92 ms ( 6.1x) | 8.94 ms ( 9.6x) 50x | 495,995 | 213.04 ms (38.0x) | 27.94 ms (17.1x) | 19.20 ms (20.5x) Ideal O(n): time should grow linearly with multiplier. With smoothing: time for SVG creation is ~constant after reduction. === Output Size vs Draw Time === Comparing output point count and actual draw time... Input Points | MA Elements | MA Draw Time | RDP Elements | RDP Draw Time -------------|-------------|----------------|--------------|---------------- 1,000 | 5 | 174.0 µs | 5 | 214.9 µs 10,000 | 5 | 552.3 µs | 5 | 478.0 µs 97,643 | 5 | 4.74 ms | 5 | 3.98 ms 495,995 | 5 | 30.90 ms | 5 | 33.26 ms 944,282 | 5 | 97.24 ms | 5 | 44.24 ms Element count reflects SVG complexity after smoothing. === Multi-Series SparkLine Draw Time === Measuring draw time with multiple data series... Series Count | Moving Avg | RDP -------------|----------------|---------------- 1 | 6.10 ms | 3.48 ms 2 | 9.96 ms | 13.15 ms 3 | 15.45 ms | 14.70 ms 5 | 21.58 ms | 24.93 ms Draw time scales with number of series. === Performance Summary === ✓ sparkline.none.100: 2.23 ms (baseline: 2.92 ms, -23.5%) ✓ sparkline.movingAvg.100: 1.82 ms (baseline: 2.08 ms, -12.4%) ✓ sparkline.rdp.100: 1.17 ms (baseline: 2.76 ms, -57.7%) ✓ sparkline.none.1000: 3.43 ms (baseline: 4.00 ms, -14.3%) ✓ sparkline.movingAvg.1000: 1.49 ms (baseline: 2.95 ms, -49.4%) ✓ sparkline.rdp.1000: 2.08 ms (baseline: 2.49 ms, -16.6%) sparkline.none.10000: 10.95 ms (baseline: 11.77 ms, -7.0%) ✓ sparkline.movingAvg.10000: 2.57 ms (baseline: 4.76 ms, -46.0%) ✓ sparkline.rdp.10000: 4.62 ms (baseline: 5.67 ms, -18.5%) ✓ sparkline.none.50000: 26.40 ms (baseline: 30.99 ms, -14.8%) ✓ sparkline.movingAvg.50000: 3.86 ms (baseline: 6.34 ms, -39.0%) ✓ sparkline.rdp.50000: 45.29 ms (baseline: 57.22 ms, -20.9%) ✓ sparkline.none.100000: 45.85 ms (baseline: 74.22 ms, -38.2%) ✓ sparkline.movingAvg.100000: 5.53 ms (baseline: 8.56 ms, -35.4%) ⚠️ sparkline.rdp.100000: 6.40 ms (baseline: 5.32 ms, +20.3%) ✓ sparkline.none.500000: 254.88 ms (baseline: 298.15 ms, -14.5%) ✓ sparkline.movingAvg.500000: 38.47 ms (baseline: 56.57 ms, -32.0%) sparkline.rdp.500000: 22.52 ms (baseline: 22.26 ms, +1.2%) sparkline.none.948423: 467.09 ms (baseline: 485.33 ms, -3.8%) ✓ sparkline.movingAvg.948423: 99.17 ms (baseline: 136.90 ms, -27.6%) ✓ sparkline.rdp.948423: 73.34 ms (baseline: 93.69 ms, -21.7%) windrose.aggregation.1000: 458.7 µs (baseline: 444.3 µs, +3.2%) ✓ windrose.draw.1000: 833.3 µs (baseline: 1.04 ms, -20.0%) windrose.aggregation.10000: 1.57 ms (baseline: 1.62 ms, -3.1%) ✓ windrose.draw.10000: 728.9 µs (baseline: 1.13 ms, -35.7%) windrose.aggregation.50000: 7.44 ms (baseline: 7.06 ms, +5.4%) windrose.draw.50000: 706.9 µs (baseline: 698.1 µs, +1.3%) ✓ windrose.aggregation.100000: 4.00 ms (baseline: 4.80 ms, -16.7%) ✓ windrose.draw.100000: 578.6 µs (baseline: 1.19 ms, -51.4%) ✓ windrose.aggregation.500000: 20.39 ms (baseline: 24.45 ms, -16.6%) ✓ windrose.draw.500000: 612.5 µs (baseline: 966.5 µs, -36.6%) windrose.aggregation.948423: 40.59 ms (baseline: 37.48 ms, +8.3%) windrose.draw.948423: 653.3 µs (baseline: 673.6 µs, -3.0%) ✓ scaling.none.1x: 4.28 ms (baseline: 11.84 ms, -63.9%) ✓ scaling.movingAvg.1x: 857.4 µs (baseline: 1.84 ms, -53.3%) scaling.rdp.1x: 605.0 µs (baseline: 668.6 µs, -9.5%) ✓ scaling.none.2x: 8.93 ms (baseline: 13.17 ms, -32.2%) scaling.movingAvg.2x: 2.43 ms (baseline: 2.50 ms, -2.6%) scaling.rdp.2x: 880.0 µs (baseline: 864.4 µs, +1.8%) ✓ scaling.none.5x: 24.40 ms (baseline: 29.04 ms, -16.0%) ✓ scaling.movingAvg.5x: 3.34 ms (baseline: 4.52 ms, -26.1%) ⚠️ scaling.rdp.5x: 2.72 ms (baseline: 1.76 ms, +54.8%) scaling.none.10x: 48.77 ms (baseline: 46.18 ms, +5.6%) ✓ scaling.movingAvg.10x: 4.05 ms (baseline: 9.58 ms, -57.7%) scaling.rdp.10x: 4.46 ms (baseline: 3.92 ms, +13.9%) scaling.none.20x: 94.26 ms (baseline: 98.49 ms, -4.3%) ✓ scaling.movingAvg.20x: 9.92 ms (baseline: 16.09 ms, -38.4%) scaling.rdp.20x: 8.94 ms (baseline: 8.03 ms, +11.3%) ✓ scaling.none.50x: 213.04 ms (baseline: 261.48 ms, -18.5%) ✓ scaling.movingAvg.50x: 27.94 ms (baseline: 65.76 ms, -57.5%) scaling.rdp.50x: 19.20 ms (baseline: 20.05 ms, -4.2%) ✓ multiseries.movingAvg.1series: 6.10 ms (baseline: 9.98 ms, -38.9%) ✓ multiseries.rdp.1series: 3.48 ms (baseline: 4.37 ms, -20.4%) multiseries.movingAvg.2series: 9.96 ms (baseline: 10.85 ms, -8.2%) ✓ multiseries.rdp.2series: 13.15 ms (baseline: 17.41 ms, -24.4%) multiseries.movingAvg.3series: 15.45 ms (baseline: 15.70 ms, -1.6%) ✓ multiseries.rdp.3series: 14.70 ms (baseline: 17.24 ms, -14.7%) multiseries.movingAvg.5series: 21.58 ms (baseline: 21.73 ms, -0.7%) multiseries.rdp.5series: 24.93 ms (baseline: 26.40 ms, -5.6%) Baseline saved to: /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/svg-visualizations/performance-baseline.properties [WARNING] Tests run: 6, Failures: 0, Errors: 0, Skipped: 1, Time elapsed: 32.54 s -- in org.vaadin.svgvis.RenderingPerformanceTest [INFO] Running org.vaadin.svgvis.unit.WindRoseTest [INFO] Tests run: 4, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.010 s -- in org.vaadin.svgvis.unit.WindRoseTest [INFO] Running org.vaadin.svgvis.unit.SvgSparkLineTest [INFO] Tests run: 8, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.014 s -- in org.vaadin.svgvis.unit.SvgSparkLineTest [INFO] Running org.vaadin.svgvis.SessionWeightTest Loaded 948423 weather records for testing === DataPoints Session Weight Analysis === Measuring serialized size of SvgSparkLine.DataPoint lists... Data points: 100 -> Serialized: 2.3 KB (23.2 bytes/point) Data points: 1,000 -> Serialized: 21.6 KB (22.1 bytes/point) Data points: 10,000 -> Serialized: 215.0 KB (22.0 bytes/point) Data points: 49,871 -> Serialized: 1.0 MB (22.0 bytes/point) Data points: 97,643 -> Serialized: 2.0 MB (22.0 bytes/point) Data points: 495,995 -> Serialized: 10.4 MB (22.0 bytes/point) Data points: 944,282 -> Serialized: 19.8 MB (22.0 bytes/point) === WindRose Data Session Weight Analysis === WindRose aggregates data into fixed sectors, so weight is constant. Input records: 100 -> Aggregated to 16 sectors -> Serialized: 505 B Input records: 1,000 -> Aggregated to 16 sectors -> Serialized: 505 B Input records: 10,000 -> Aggregated to 16 sectors -> Serialized: 505 B Input records: 50,000 -> Aggregated to 16 sectors -> Serialized: 505 B Input records: 100,000 -> Aggregated to 16 sectors -> Serialized: 505 B Input records: 500,000 -> Aggregated to 16 sectors -> Serialized: 505 B Input records: 948,423 -> Aggregated to 16 sectors -> Serialized: 505 B Conclusion: WindRose weight is ~constant regardless of input size! === Session Weight Growth Comparison === Comparing growth patterns of different data storage approaches... Size | Raw Data | Before Draw | After Smooth | After Draw | WindRose -------------|----------------|----------------|----------------|----------------|---------- 1,000 | 259.4 KB | 21.6 KB | 1.2 KB | 58 B | 155 B 10,000 | 2.5 MB | 215.0 KB | 1.2 KB | 58 B | 155 B 100,000 | 25.3 MB | 2.1 MB | 1.2 KB | 58 B | 155 B 948,423 | 239.7 MB | 19.9 MB | 1.2 KB | 58 B | 155 B Key insight: After draw(), SparkLine clears all data - session weight is ~0! Data is only needed during draw(), SVG elements retain the visualization. === Raw Weather Data Session Weight === For comparison: size of raw RawWeatherStationData objects... Raw records: 100 -> Serialized: 26.4 KB (271 bytes/record) Raw records: 1,000 -> Serialized: 259.4 KB (266 bytes/record) Raw records: 10,000 -> Serialized: 2.5 MB (265 bytes/record) Raw records: 50,000 -> Serialized: 12.6 MB (265 bytes/record) Raw records: 100,000 -> Serialized: 25.3 MB (265 bytes/record) Raw records: 500,000 -> Serialized: 126.4 MB (265 bytes/record) Raw records: 948,423 -> Serialized: 239.7 MB (265 bytes/record) === RDP Algorithm Point Reduction === Measuring how RDP reduces data points while preserving shape... Input Points | RDP Points | Reduction | Serialized Size -------------|------------|-----------|---------------- 100 | 40 | 60.0% | 997 B 1,000 | 132 | 86.8% | 3.0 KB 10,000 | 84 | 99.2% | 1.9 KB 49,871 | 94 | 99.8% | 2.1 KB 97,643 | 95 | 99.9% | 2.2 KB 944,282 | 187 | 100.0% | 4.1 KB RDP preserves shape-significant points, so reduction varies with data complexity. [INFO] Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 15.85 s -- in org.vaadin.svgvis.SessionWeightTest [INFO] [INFO] Results: [INFO] [WARNING] Tests run: 23, Failures: 0, Errors: 0, Skipped: 1 [INFO] [INFO] [INFO] --- jar:3.5.0:jar (default-jar) @ svg-visualizations --- [INFO] Building jar: /home/ghrunner/actions-runner/_work/vaadin-ecosystem-build/vaadin-ecosystem-build/work/svg-visualizations/target/svg-visualizations-1.0.1-SNAPSHOT.jar [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 55.823 s [INFO] Finished at: 2026-04-14T06:40:44Z [INFO] ------------------------------------------------------------------------