add basic performance monitoring action

.github/workflows/performance-monitor.yml

@@ -0,0 +1,41 @@
+name: Performance Monitor
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  performance-monitor:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v5
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.25'
+
+    - name: Cache Go modules
+      uses: actions/cache@v3
+      with:
+        path: |
+          ~/go/pkg/mod
+          ~/.cache/go-build
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-
+
+    - name: Build
+      run: |
+        go build -o bin/reticulum-go ./cmd/reticulum-go
+
+    - name: Run Performance Monitor
+      id: monitor
+      run: |
+        cp tests/scripts/monitor_performance.sh .
+        chmod +x monitor_performance.sh
+        ./monitor_performance.sh

tests/scripts/monitor_performance.sh

@@ -0,0 +1,113 @@
+#!/bin/bash
+set -e
+
+echo "Starting Reticulum-Go with memory and CPU monitoring..."
+
+# Start the process in background
+./bin/reticulum-go &
+PID=$!
+
+echo "Process started with PID: $PID"
+
+# Initialize tracking variables
+MAX_RSS=0
+MAX_VSZ=0
+MAX_CPU=0
+SAMPLES=0
+TOTAL_RSS=0
+TOTAL_VSZ=0
+TOTAL_CPU=0
+
+END_TIME=$((SECONDS + 40))
+
+while [ $SECONDS -lt $END_TIME ] && kill -0 $PID 2>/dev/null; do
+    # Get memory and CPU info using ps
+    if PROC_INFO=$(ps -o pid,rss,vsz,pcpu --no-headers -p $PID 2>/dev/null); then
+        RSS=$(echo $PROC_INFO | awk '{print $2}')  # RSS in KB
+        VSZ=$(echo $PROC_INFO | awk '{print $3}')  # VSZ in KB
+        CPU=$(echo $PROC_INFO | awk '{print $4}')  # CPU percentage
+
+        if [ -n "$RSS" ] && [ -n "$VSZ" ] && [ -n "$CPU" ]; then
+            SAMPLES=$((SAMPLES + 1))
+            TOTAL_RSS=$((TOTAL_RSS + RSS))
+            TOTAL_VSZ=$((TOTAL_VSZ + VSZ))
+            TOTAL_CPU=$((TOTAL_CPU + CPU))
+
+            if [ $RSS -gt $MAX_RSS ]; then
+                MAX_RSS=$RSS
+            fi
+
+            if [ $VSZ -gt $MAX_VSZ ]; then
+                MAX_VSZ=$VSZ
+            fi
+
+            # CPU is already a percentage (0-100), so compare as integers
+            CPU_INT=$(echo $CPU | cut -d. -f1)
+            if [ $CPU_INT -gt $MAX_CPU ]; then
+                MAX_CPU=$CPU_INT
+            fi
+        fi
+    fi
+
+    sleep 0.1  # Sample every 100ms
+done
+
+# Stop the process if still running
+if kill -0 $PID 2>/dev/null; then
+    echo "Stopping process..."
+    kill $PID 2>/dev/null || true
+    sleep 1
+    kill -9 $PID 2>/dev/null || true
+fi
+
+# Calculate averages
+if [ $SAMPLES -gt 0 ]; then
+    AVG_RSS=$((TOTAL_RSS / SAMPLES))
+    AVG_VSZ=$((TOTAL_VSZ / SAMPLES))
+    AVG_CPU=$((TOTAL_CPU / SAMPLES))
+else
+    AVG_RSS=0
+    AVG_VSZ=0
+    AVG_CPU=0
+fi
+
+# Convert to MB and GB
+MAX_RSS_MB=$((MAX_RSS / 1024))
+MAX_RSS_GB=$((MAX_RSS_MB / 1024))
+AVG_RSS_MB=$((AVG_RSS / 1024))
+AVG_RSS_GB=$((AVG_RSS_MB / 1024))
+
+MAX_VSZ_MB=$((MAX_VSZ / 1024))
+MAX_VSZ_GB=$((MAX_VSZ_MB / 1024))
+AVG_VSZ_MB=$((AVG_VSZ / 1024))
+AVG_VSZ_GB=$((AVG_VSZ_MB / 1024))
+
+# Output results
+echo "=== Performance Usage Report ==="
+echo "Monitoring duration: 40 seconds"
+echo "Samples collected: $SAMPLES"
+echo ""
+
+echo "## CPU Usage - Processor Utilization (since process start)"
+echo "- Max CPU: ${MAX_CPU}%"
+echo "- Avg CPU: ${AVG_CPU}%"
+echo "- Note: Low CPU usage is normal for I/O-bound network applications"
+echo ""
+
+echo "## RSS (Resident Set Size) - Actual Memory Used"
+echo "- Max RSS: ${MAX_RSS} KB (${MAX_RSS_MB} MB / ${MAX_RSS_GB} GB)"
+echo "- Avg RSS: ${AVG_RSS} KB (${AVG_RSS_MB} MB / ${AVG_RSS_GB} GB)"
+echo ""
+
+echo "## VSZ (Virtual Memory Size) - Total Virtual Memory"
+echo "- Max VSZ: ${MAX_VSZ} KB (${MAX_VSZ_MB} MB / ${MAX_VSZ_GB} GB)"
+echo "- Avg VSZ: ${AVG_VSZ} KB (${AVG_VSZ_MB} MB / ${AVG_VSZ_GB} GB)"
+echo ""
+
+# Output for potential future use
+echo "MAX_CPU=$MAX_CPU" >> $GITHUB_OUTPUT
+echo "AVG_CPU=$AVG_CPU" >> $GITHUB_OUTPUT
+echo "MAX_RSS_MB=$MAX_RSS_MB" >> $GITHUB_OUTPUT
+echo "AVG_RSS_MB=$AVG_RSS_MB" >> $GITHUB_OUTPUT
+echo "MAX_VSZ_MB=$MAX_VSZ_MB" >> $GITHUB_OUTPUT
+echo "AVG_VSZ_MB=$AVG_VSZ_MB" >> $GITHUB_OUTPUT