perf - Add performance report for 4.2.21 [ci skip]

reports/4.2.21/perf.json

@@ -0,0 +1,407 @@
+{
+    "tag": "4.2.21",
+    "generated_at": "2026-01-23T21:16:07Z",
+    "parent_pipeline_id": 12248,
+    "child_pipeline_id": 12250,
+    "summary": {
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+        "passed_tests": 661,
+        "failed_tests": 0,
+        "total_languages": 43,
+        "passed_languages": 43,
+        "avg_duration_seconds": 102,
+        "max_duration_seconds": 215,
+        "min_duration_seconds": 22,
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+        "fastest_language": "erlang"
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reports/4.2.21/perf.md

@@ -0,0 +1,146 @@
+# Performance Report: 4.2.21
+
+**Generated:** 2026-01-23T21:16:07Z
+**Pipeline:** [#12250](https://git.unturf.com/engineering/unturf/un-inception/-/pipelines/12250)
+
+## Summary
+
+| Metric | Value |
+|--------|-------|
+| Total Tests | 661 |
+| Passed | 661 |
+| Failed | 0 |
+| Pass Rate | 100.0% |
+| Languages | 43 |
+| Avg Duration | 102s |
+| Slowest | nim (215s) |
+| Fastest | erlang (22s) |
+
+---
+
+## Test Duration by Language
+
+The primary performance metric - how long each language takes to run its full test suite (15 tests per language).
+
+![Duration by Language](chart-duration-by-language.png)
+
+**Key observations:**
+- **NIM** and **DART** are outliers at 90+ seconds
+- Most languages cluster between 20-40 seconds
+- Compiled languages (red) tend to be faster than interpreted (blue)
+- **ERLANG** is the fastest at 22 seconds
+
+---
+
+## Compiled vs Interpreted
+
+Comparing performance between compiled languages (C, Go, Rust, etc.) and interpreted languages (Python, Ruby, JavaScript, etc.).
+
+![Category Comparison](chart-category-comparison.png)
+
+**Findings:**
+- 20 compiled languages vs 22 interpreted
+- Compiled languages have lower median execution time
+- Interpreted languages show more variance (wider spread)
+- The white diamond marks the mean for each category
+
+---
+
+## Duration Distribution
+
+Histogram showing how test durations are distributed across all 43 languages.
+
+![Duration Histogram](chart-duration-histogram.png)
+
+**Distribution analysis:**
+- Most languages complete in 20-35 seconds (the peak)
+- Mean (green dashed) and median (blue dotted) are close together
+- Long tail on the right from slow outliers (nim, dart)
+
+---
+
+## Speed Leaders
+
+Side-by-side comparison of the 10 slowest and 10 fastest languages.
+
+![Speed Leaders](chart-speed-leaders.png)
+
+**Slowest (left):** NIM, DART, JAVA, CPP, RUST
+**Fastest (right):** ERLANG, R, RUBY, AWK, TYPESCRIPT
+
+---
+
+## Queue vs Execution Time
+
+Scatter plot showing the relationship between CI queue wait time and actual test execution time.
+
+![Queue vs Execution](chart-queue-vs-execution.png)
+
+**Notes:**
+- Queue time is how long the job waited for a runner
+- Most jobs had similar queue times (clustered vertically)
+- Outliers labeled - nim and dart took longest to execute regardless of queue time
+
+---
+
+## Dashboard
+
+Summary dashboard combining key metrics and visualizations.
+
+![Dashboard](chart-dashboard.png)
+
+---
+
+## Raw Data
+
+### Per-Language Performance
+
+| Language | Status | Duration |
+|----------|--------|----------|
+| nim | Passed | 215s |
+| dart | Passed | 208s |
+| java | Passed | 204s |
+| cpp | Passed | 204s |
+| rust | Passed | 199s |
+| zig | Passed | 192s |
+| lua | Passed | 183s |
+| forth | Passed | 142s |
+| haskell | Passed | 129s |
+| php | Passed | 127s |
+| fsharp | Passed | 125s |
+| fortran | Passed | 125s |
+| ocaml | Passed | 124s |
+| csharp | Passed | 123s |
+| v | Passed | 121s |
+| objc | Passed | 121s |
+| perl | Passed | 104s |
+| bash | Passed | 104s |
+| elixir | Passed | 102s |
+| tcl | Passed | 98s |
+| go | Passed | 94s |
+| deno | Passed | 85s |
+| raku | Passed | 83s |
+| julia | Passed | 80s |
+| d | Passed | 80s |
+| scheme | Passed | 79s |
+| commonlisp | Passed | 77s |
+| clojure | Passed | 77s |
+| kotlin | Passed | 76s |
+| crystal | Passed | 76s |
+| c | Passed | 76s |
+| groovy | Passed | 75s |
+| powershell | Passed | 74s |
+| dotnet | Passed | 64s |
+| prolog | Passed | 62s |
+| cobol | Passed | 62s |
+| python | Passed | 43s |
+| javascript | Passed | 42s |
+| typescript | Passed | 39s |
+| awk | Passed | 33s |
+| ruby | Passed | 30s |
+| r | Passed | 24s |
+| erlang | Passed | 22s |
+
+---
+
+*Report generated by UN Inception CI pipeline*

reports/4.2.21/pool-metrics.json

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+        "stdev": 1.5
+      },
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+      "total": {
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+        "avg": 64,
+        "median": 64,
+        "stdev": 2.11
+      },
+      "sample_count": 37
+    }
+  ]
+}

reports/4.2.21/raw-pools.csv

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reports/4.2.21/raw-samples.csv

@@ -0,0 +1,73 @@
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reports/PERFORMANCE-HISTORY.md

@@ -25,3 +25,4 @@ Tracking compile and test execution times across releases.
 | 4.2.18 | 2026-01-23 | 665 | 100.0% | 100s | r | scheme |
 | 4.2.19 | 2026-01-23 | 701 | 100.0% | 151s | lua | dart |
 | 4.2.20 | 2026-01-23 | 685 | 100.0% | 114s | java | crystal |
+| 4.2.21 | 2026-01-23 | 661 | 100.0% | 102s | nim | erlang |