chore(scripts): JIT 프로파일링 자동화 스크립트 추가

- Gatling 부하 테스트와 JFR, Hotspot 로그를 자동으로 수집하는 bash 스크립트 추가
- 서버 실행 여부 확인 및 VM 옵션 안내 포함
- Gatling 테스트 완료 후 리포트 경로 및 분석 도구 안내 출력
- profiling 결과(JFR, hotspot 로그, Gatling report)를 한 번에 정리 가능

Author: yyubin

jit-benchmark.sh

@@ -0,0 +1,122 @@
+#!/bin/bash
+# ================================================
+# 🌱 Sprout JIT Profiling with Gatling
+# -----------------------------------------------
+# 1. IntelliJ에서 서버 실행 (JFR + JIT 로그)
+# 2. Gatling 부하 테스트 실행
+# 3. 결과 분석: JFR, Hotspot 로그, Gatling 리포트
+# ================================================
+
+OUTPUT_DIR="./jit-profile"
+PORT=8080
+
+# ================================================
+# 준비
+# ================================================
+mkdir -p "$OUTPUT_DIR"
+
+echo "════════════════════════════════════════════════════════════════"
+echo "  🌱 Sprout JIT Profiling with Gatling"
+echo "════════════════════════════════════════════════════════════════"
+echo ""
+
+# ================================================
+# 서버 구동 확인
+# ================================================
+echo "[1/3] Checking if Sprout server is running..."
+if ! curl -s "http://localhost:$PORT/benchmark/hello" > /dev/null 2>&1; then
+  echo ""
+  echo "Server is NOT running on port $PORT"
+  echo ""
+  echo "Start the server from IntelliJ with these VM options:"
+  echo "────────────────────────────────────────────────────────────────"
+  cat << 'VMEOF'
+--add-opens=java.base/java.lang=ALL-UNNAMED
+--add-opens=java.base/java.lang.reflect=ALL-UNNAMED
+--add-opens=java.base/java.io=ALL-UNNAMED
+--add-opens=java.base/java.util=ALL-UNNAMED
+-XX:StartFlightRecording=filename=jit-profile/recording.jfr,duration=300s,settings=profile
+-XX:+UnlockDiagnosticVMOptions
+-XX:+LogCompilation
+-XX:LogFile=jit-profile/hotspot_%p.log
+-XX:+PrintInlining
+-XX:+PrintCompilation
+-XX:+PrintCodeCache
+-XX:+PrintAssembly
+-XX:PrintAssemblyOptions=intel
+-XX:CompileCommand=print,*benchmark*
+-XX:+DebugNonSafepoints
+VMEOF
+  echo "────────────────────────────────────────────────────────────────"
+  echo ""
+  echo "Note: -XX:+PrintAssembly requires hsdis library"
+  echo "   Download: https://chriswhocodes.com/hsdis/"
+  echo "   Place at: \$JAVA_HOME/lib/server/"
+  echo ""
+  exit 1
+fi
+
+echo "✓ Server is running on port $PORT"
+echo ""
+
+# ================================================
+# Gatling 부하 테스트
+# ================================================
+echo "[2/3] Running Gatling Heavy Load test..."
+echo "────────────────────────────────────────────────────────────────"
+echo "  Simulation: HeavyLoadSimulation"
+echo "  Warm-up:    ~20,000 requests"
+echo "  Load test:  ~80,000 requests"
+echo "  Total:      ~100,000 requests"
+echo "────────────────────────────────────────────────────────────────"
+echo ""
+
+# Gatling 실행
+./gradlew gatlingRun --simulation=benchmark.HeavyLoadSimulation
+
+GATLING_EXIT_CODE=$?
+
+if [ $GATLING_EXIT_CODE -ne 0 ]; then
+  echo ""
+  echo "Gatling test failed with exit code: $GATLING_EXIT_CODE"
+  exit $GATLING_EXIT_CODE
+fi
+
+echo ""
+echo "✓ Gatling test completed"
+echo ""
+
+# ================================================
+# 결과 정리
+# ================================================
+echo "[3/3] Collecting profiling results..."
+echo ""
+
+# Gatling 리포트 경로 찾기
+LATEST_GATLING_REPORT=$(find build/reports/gatling -type d -name "*HeavyLoadSimulation*" 2>/dev/null | sort -r | head -n 1)
+
+echo "════════════════════════════════════════════════════════════════"
+echo "  Profiling Complete!"
+echo "════════════════════════════════════════════════════════════════"
+echo ""
+echo "Profiling Data:"
+echo "  • JIT Compilation Log:  $OUTPUT_DIR/hotspot_*.log"
+echo "  • JFR Recording:        $OUTPUT_DIR/recording.jfr"
+echo "  • Assembly Output:      $OUTPUT_DIR/hotspot_*.log (if hsdis available)"
+echo ""
+echo "Gatling Report:"
+if [ -n "$LATEST_GATLING_REPORT" ]; then
+  echo "  • HTML Report:          $LATEST_GATLING_REPORT/index.html"
+  echo ""
+  echo "  Open report:"
+  echo "    open $LATEST_GATLING_REPORT/index.html"
+else
+  echo "  • Check: build/reports/gatling/"
+fi
+echo ""
+echo "Analysis Tools"
+echo "  1. JITWatch:     Analyze hotspot_*.log for JIT compilation details"
+echo "  2. JDK Mission Control: Open recording.jfr for performance profiling"
+echo "  3. Gatling:      View HTML report for load test metrics"
+echo ""
+echo "════════════════════════════════════════════════════════════════"