$ 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: 2026-04-15T06:39:12.992547305Z Baseline CPU: AMD EPYC-Rome Processor Baseline OS: Linux Loaded 948423 weather records for performance testing 06:39:51.932 [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 | 1.76 ms | 1.46 ms | 1.17 ms 1,000 | 2.79 ms | 1.54 ms | 1.68 ms 10,000 | 13.34 ms | 4.70 ms | 4.16 ms 49,871 | 23.43 ms | 3.01 ms | 50.14 ms 97,643 | 42.62 ms | 5.31 ms | 5.06 ms 495,995 | 260.71 ms | 26.06 ms | 19.19 ms 944,282 | 438.53 ms | 90.90 ms | 88.13 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 | 796.0 µs | 899.7 µs | 1.70 ms 10,000 | 1.57 ms | 695.6 µs | 2.26 ms 50,000 | 8.44 ms | 695.4 µs | 9.13 ms 100,000 | 3.76 ms | 660.5 µs | 4.42 ms 500,000 | 19.37 ms | 616.0 µs | 19.99 ms 948,423 | 36.80 ms | 635.8 µs | 37.44 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 | 4.87 ms ( 1.1x) | 1.64 ms ( 1.7x) | 621.7 µs ( 0.5x) 2x | 19,996 | 9.81 ms ( 2.1x) | 1.85 ms ( 2.0x) | 1.20 ms ( 1.1x) 5x | 49,871 | 21.18 ms ( 4.6x) | 3.11 ms ( 3.3x) | 2.87 ms ( 2.5x) 10x | 97,643 | 39.09 ms ( 8.5x) | 4.67 ms ( 5.0x) | 3.44 ms ( 3.0x) 20x | 196,569 | 86.37 ms (18.7x) | 10.36 ms (11.1x) | 8.36 ms ( 7.3x) 50x | 495,995 | 231.77 ms (50.2x) | 42.87 ms (45.8x) | 19.81 ms (17.4x) 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 | 152.8 µs | 5 | 219.0 µs 10,000 | 5 | 556.5 µs | 5 | 467.7 µs 97,643 | 5 | 5.54 ms | 5 | 3.45 ms 495,995 | 5 | 29.75 ms | 5 | 22.03 ms 944,282 | 5 | 167.10 ms | 5 | 41.09 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 | 5.81 ms | 3.27 ms 2 | 11.20 ms | 10.83 ms 3 | 14.68 ms | 17.67 ms 5 | 20.74 ms | 28.61 ms Draw time scales with number of series. === Performance Summary === ✓ sparkline.none.100: 1.76 ms (baseline: 2.56 ms, -31.4%) ✓ sparkline.movingAvg.100: 1.46 ms (baseline: 1.79 ms, -18.2%) ✓ sparkline.rdp.100: 1.17 ms (baseline: 3.83 ms, -69.5%) ✓ sparkline.none.1000: 2.79 ms (baseline: 4.24 ms, -34.3%) ✓ sparkline.movingAvg.1000: 1.54 ms (baseline: 2.07 ms, -25.3%) ✓ sparkline.rdp.1000: 1.68 ms (baseline: 2.28 ms, -26.3%) ✓ sparkline.none.10000: 13.34 ms (baseline: 20.10 ms, -33.6%) ⚠️ sparkline.movingAvg.10000: 4.70 ms (baseline: 3.79 ms, +23.9%) ✓ sparkline.rdp.10000: 4.16 ms (baseline: 16.29 ms, -74.5%) ✓ sparkline.none.50000: 23.43 ms (baseline: 44.73 ms, -47.6%) ✓ sparkline.movingAvg.50000: 3.01 ms (baseline: 5.22 ms, -42.4%) ⚠️ sparkline.rdp.50000: 50.14 ms (baseline: 41.52 ms, +20.7%) ✓ sparkline.none.100000: 42.62 ms (baseline: 73.21 ms, -41.8%) sparkline.movingAvg.100000: 5.31 ms (baseline: 5.79 ms, -8.3%) sparkline.rdp.100000: 5.06 ms (baseline: 4.37 ms, +15.7%) sparkline.none.500000: 260.71 ms (baseline: 261.14 ms, -0.2%) ✓ sparkline.movingAvg.500000: 26.06 ms (baseline: 47.20 ms, -44.8%) ✓ sparkline.rdp.500000: 19.19 ms (baseline: 22.11 ms, -13.2%) sparkline.none.948423: 438.53 ms (baseline: 483.90 ms, -9.4%) sparkline.movingAvg.948423: 90.90 ms (baseline: 96.17 ms, -5.5%) ⚠️ sparkline.rdp.948423: 88.13 ms (baseline: 69.31 ms, +27.1%) ⚠️ windrose.aggregation.1000: 796.0 µs (baseline: 498.8 µs, +59.6%) ✓ windrose.draw.1000: 899.7 µs (baseline: 1.43 ms, -37.1%) ✓ windrose.aggregation.10000: 1.57 ms (baseline: 3.88 ms, -59.7%) ✓ windrose.draw.10000: 695.6 µs (baseline: 2.30 ms, -69.8%) ✓ windrose.aggregation.50000: 8.44 ms (baseline: 12.07 ms, -30.1%) ✓ windrose.draw.50000: 695.4 µs (baseline: 823.6 µs, -15.6%) ✓ windrose.aggregation.100000: 3.76 ms (baseline: 6.41 ms, -41.3%) ✓ windrose.draw.100000: 660.5 µs (baseline: 905.1 µs, -27.0%) ✓ windrose.aggregation.500000: 19.37 ms (baseline: 23.32 ms, -16.9%) ✓ windrose.draw.500000: 616.0 µs (baseline: 1.84 ms, -66.5%) ✓ windrose.aggregation.948423: 36.80 ms (baseline: 45.51 ms, -19.1%) ✓ windrose.draw.948423: 635.8 µs (baseline: 827.2 µs, -23.1%) ✓ scaling.none.1x: 4.87 ms (baseline: 7.91 ms, -38.5%) ⚠️ scaling.movingAvg.1x: 1.64 ms (baseline: 1.10 ms, +49.1%) ✓ scaling.rdp.1x: 621.7 µs (baseline: 975.0 µs, -36.2%) ✓ scaling.none.2x: 9.81 ms (baseline: 11.33 ms, -13.4%) ⚠️ scaling.movingAvg.2x: 1.85 ms (baseline: 1.22 ms, +52.0%) ⚠️ scaling.rdp.2x: 1.20 ms (baseline: 807.8 µs, +48.5%) ✓ scaling.none.5x: 21.18 ms (baseline: 25.68 ms, -17.5%) scaling.movingAvg.5x: 3.11 ms (baseline: 3.28 ms, -5.3%) ⚠️ scaling.rdp.5x: 2.87 ms (baseline: 2.00 ms, +43.3%) ✓ scaling.none.10x: 39.09 ms (baseline: 52.81 ms, -26.0%) ✓ scaling.movingAvg.10x: 4.67 ms (baseline: 6.08 ms, -23.3%) ✓ scaling.rdp.10x: 3.44 ms (baseline: 10.43 ms, -67.1%) scaling.none.20x: 86.37 ms (baseline: 94.24 ms, -8.3%) scaling.movingAvg.20x: 10.36 ms (baseline: 9.85 ms, +5.2%) scaling.rdp.20x: 8.36 ms (baseline: 8.25 ms, +1.4%) scaling.none.50x: 231.77 ms (baseline: 220.64 ms, +5.0%) scaling.movingAvg.50x: 42.87 ms (baseline: 40.32 ms, +6.3%) scaling.rdp.50x: 19.81 ms (baseline: 19.55 ms, +1.3%) multiseries.movingAvg.1series: 5.81 ms (baseline: 5.51 ms, +5.4%) multiseries.rdp.1series: 3.27 ms (baseline: 3.24 ms, +1.1%) multiseries.movingAvg.2series: 11.20 ms (baseline: 10.80 ms, +3.6%) ⚠️ multiseries.rdp.2series: 10.83 ms (baseline: 8.51 ms, +27.2%) multiseries.movingAvg.3series: 14.68 ms (baseline: 13.94 ms, +5.4%) ⚠️ multiseries.rdp.3series: 17.67 ms (baseline: 14.02 ms, +26.0%) ✓ multiseries.movingAvg.5series: 20.74 ms (baseline: 24.96 ms, -16.9%) multiseries.rdp.5series: 28.61 ms (baseline: 23.95 ms, +19.4%) 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: 31.64 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: 0.011 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: 0.029 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: 14.16 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: 52.905 s [INFO] Finished at: 2026-04-15T06:40:25Z [INFO] ------------------------------------------------------------------------