[BAEL-9370] Added script to start and profile the app

Author: bpstelios10

persistence-modules/spring-data-jpa-repo-5/scripts/startup.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+APP_COMMAND=""
+
+case "$1" in
+  aot)
+    APP_COMMAND="java -Dspring.aot.enabled=true \
+                     -Dspring.aot.repositories.enabled=false \
+                     -agentlib:native-image-agent=config-output-dir=target/native-image-hints \
+                     -jar spring-data-jpa-aot/target/spring-data-jpa-aot-0.0.1-SNAPSHOT.jar"
+    ;;
+  aot-repo)
+    APP_COMMAND="java -Dspring.aot.enabled=true \
+                      -Dspring.aot.repositories.enabled=true \
+                      -agentlib:native-image-agent=config-output-dir=target/native-image-hints \
+                      -jar spring-data-jpa-aot-repository/target/spring-data-jpa-aot-repository-0.0.1-SNAPSHOT.jar"
+    ;;
+  non-aot)
+    APP_COMMAND="java -jar spring-data-jpa-not-aot/target/spring-data-jpa-not-aot-0.0.1-SNAPSHOT.jar"
+    ;;
+  *)
+    echo "Error: Unknown mode '$1'. Use 'aot', 'aot-repo' or 'non-aot'."
+    exit 1
+    ;;
+esac
+
+# --- 1. Start your script in the background ---
+# Record start time in milliseconds
+start_ns=$(date +%s%N)
+$APP_COMMAND &
+APP_PID=$!
+echo "Started APP with PID $APP_PID"
+
+# --- 2. Start sampling in the background ---
+sudo sample $APP_PID > sample_output.txt &
+SAMPLE_PID=$!
+echo "Sampling process started (PID $SAMPLE_PID)"
+echo "Waiting for service at http://localhost:8080/get-user ..."
+
+# --- 3. Poll the endpoint until it returns HTTP 200 ---
+while [ "$(curl -s -o /dev/null -L -w ''%{http_code}'' http://localhost:8080/get-user)" != 200 ]
+  do sleep 0.001;
+done
+
+# Capture elapsed time (SECONDS has fractional part) and the memory info
+end_ns=$(date +%s%N)
+elapsed_ms=$(((end_ns - start_ns) / 1000000))
+MEMINFO=$(ps -o rss,vsz,pcpu,time -p $APP_PID | tail -1)
+
+## --- 4. Stop sampling and show results ---
+#echo "Stopping sample..."
+#sudo kill -INT "$SAMPLE_PID"
+#wait "$SAMPLE_PID" 2>/dev/null || true
+#
+## Give sample a moment to flush output
+#sleep 2
+
+# --- 5. Clean up ---
+echo "Stopping startup process..."
+kill "$APP_PID" 2>/dev/null || true
+
+# Give app a moment to shutdown
+sleep 3
+
+echo "Done."
+
+THREADS=$(grep -E "Thread_[0-9]+" sample_output.txt | wc -l)
+echo "time elapsed $elapsed_ms millis"
+echo "Threads: $THREADS"
+echo "Memory/CPU (RSS KB / VSZ KB / %CPU / CPU Time): $MEMINFO"

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-aot-repository/README.md

@@ -29,6 +29,16 @@ Startup times:
 `Root WebApplicationContext: initialization completed in 452 ms`
 `Started Application in 3.26 seconds`
 
+## Performance
+
+### Time startup
+from root `sudo ./scripts/startup.sh aot-repo`:
+```shell
+time elapsed 5296 millis
+Threads:       58
+Memory/CPU (RSS KB / VSZ KB / %CPU / CPU Time): 406992 523697872 167.5   0:10.91
+```
+
 **NOTE**:
 AOT is a mandatory step to transform a Spring application to a native executable, so it is automatically enabled when running within a native image. However it is also possible to use AOT optimizations on the JVM by setting the spring.aot.enabled System
-property to true.
+property to true.

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-aot/README.md

@@ -26,3 +26,13 @@ java -Dspring.aot.enabled=true \
 Startup times:
 `Root WebApplicationContext: initialization completed in 461 ms`
 `Started Application in 3.29 seconds`
+
+## Performance
+
+### Time startup
+from root `sudo ./scripts/startup.sh aot`:
+```shell
+time elapsed 5217 millis
+Threads:       56
+Memory/CPU (RSS KB / VSZ KB / %CPU / CPU Time): 448448 557256448 173.9   0:11.70
+```

persistence-modules/spring-data-jpa-repo-5/spring-data-jpa-not-aot/README.md

@@ -19,3 +19,13 @@ java -jar target/spring-data-jpa-not-aot-0.0.1-SNAPSHOT.jar
 Startup times:
 `Root WebApplicationContext: initialization completed in 555 ms`
 `Started Application in 2.641 seconds`
+
+## Performance
+
+### Time startup
+from root `sudo ./scripts/startup.sh non-aot`:
+```shell
+time elapsed 4490 millis
+Threads:       57
+Memory/CPU (RSS KB / VSZ KB / %CPU / CPU Time): 407584 523866624 236.2   0:10.97
+```