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skills/build-quality-gates/scripts/benchmark-performance.sh

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+#!/bin/bash
+# benchmark-performance.sh - Performance regression testing for quality gates
+#
+# Part of: Build Quality Gates Implementation
+# Purpose: Ensure quality gates remain fast and efficient
+
+set -euo pipefail
+
+# Colors
+RED='\033[0;31m'
+YELLOW='\033[1;33m'
+GREEN='\033[0;32m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+ITERATIONS=5
+TARGET_SECONDS=60
+RESULTS_FILE="performance-benchmark-$(date +%Y%m%d-%H%M%S).csv"
+
+echo "Quality Gates Performance Benchmark"
+echo "=================================="
+echo "Target: <${TARGET_SECONDS}s per run"
+echo "Iterations: $ITERATIONS"
+echo ""
+
+# Initialize results file
+echo "Iteration,Time_Seconds,Status" > "$RESULTS_FILE"
+
+# Run benchmarks
+TOTAL_TIME=0
+FAILED_RUNS=0
+
+for i in $(seq 1 $ITERATIONS); do
+    echo -n "Run $i/$ITERATIONS... "
+
+    start_time=$(date +%s.%N)
+
+    if make check-full >/dev/null 2>&1; then
+        end_time=$(date +%s.%N)
+        duration=$(echo "$end_time - $start_time" | bc)
+        status="SUCCESS"
+        echo -e "${GREEN}✓${NC} ${duration}s"
+    else
+        end_time=$(date +%s.%N)
+        duration=$(echo "$end_time - $start_time" | bc)
+        status="FAILED"
+        echo -e "${RED}✗${NC} ${duration}s (failed)"
+        ((FAILED_RUNS++)) || true
+    fi
+
+    TOTAL_TIME=$(echo "$TOTAL_TIME + $duration" | bc)
+    echo "$i,$duration,$status" >> "$RESULTS_FILE"
+done
+
+# Calculate statistics
+avg_time=$(echo "scale=2; $TOTAL_TIME / $ITERATIONS" | bc)
+success_rate=$(echo "scale=1; ($ITERATIONS - $FAILED_RUNS) * 100 / $ITERATIONS" | bc)
+
+echo ""
+echo "Results Summary"
+echo "==============="
+
+# Performance assessment
+if (( $(echo "$avg_time < $TARGET_SECONDS" | bc -l) )); then
+    echo -e "Average Time: ${GREEN}${avg_time}s${NC} ✅ Within target"
+else
+    echo -e "Average Time: ${RED}${avg_time}s${NC} ❌ Exceeds target of ${TARGET_SECONDS}s"
+fi
+
+echo "Success Rate: ${success_rate}% ($(($ITERATIONS - $FAILED_RUNS))/$ITERATIONS)"
+echo "Results saved to: $RESULTS_FILE"
+
+# Performance trend analysis (if previous results exist)
+LATEST_RESULT=$(echo "$avg_time")
+if [ -f "latest-performance.txt" ]; then
+    PREVIOUS_RESULT=$(cat latest-performance.txt)
+    CHANGE=$(echo "scale=2; ($LATEST_RESULT - $PREVIOUS_RESULT) / $PREVIOUS_RESULT * 100" | bc)
+
+    if (( $(echo "$CHANGE > 5" | bc -l) )); then
+        echo -e "${YELLOW}⚠️  Performance degraded by ${CHANGE}%${NC}"
+    elif (( $(echo "$CHANGE < -5" | bc -l) )); then
+        echo -e "${GREEN}✓ Performance improved by ${ABS_CHANGE}%${NC}"
+    else
+        echo "Performance stable (±5%)"
+    fi
+fi
+
+echo "$LATEST_RESULT" > latest-performance.txt
+
+# Recommendations
+echo ""
+echo "Recommendations"
+echo "==============="
+
+if (( $(echo "$avg_time > $TARGET_SECONDS" | bc -l) )); then
+    echo "⚠️  Performance exceeds target. Consider:"
+    echo "  • Parallel execution of independent checks"
+    echo "  • Caching expensive operations"
+    echo "  • Incremental checking for changed files only"
+    echo "  • Optimizing slow individual checks"
+elif [ $FAILED_RUNS -gt 0 ]; then
+    echo "⚠️  Some runs failed. Investigate:"
+    echo "  • Check intermittent failures"
+    echo "  • Review error logs for patterns"
+    echo "  • Consider environmental factors"
+else
+    echo "✅ Performance is within acceptable range"
+fi
+
+exit $FAILED_RUNS