Add time-series resource profiling

- Track memory and CPU usage over program lifetime
- Store elapsed time with each sample
- Generate timeline data for visualization
- Enable detailed performance analysis

run_all.sh

@@ -64,15 +64,25 @@ profile_resources() {
     local pid=$1
     local mem_output_file=$2
     local cpu_output_file=$3
+    local timeline_file=$4
     local peak_mem=0
     local peak_cpu=0
     local current_mem
     local current_cpu
+    local start_time=$(date +%s%N)
+    local sample_count=0
+    
+    # Clear output files
+    > "$mem_output_file"
+    > "$cpu_output_file"
+    > "$timeline_file"
     
     # Sample resources every 10ms while process is running
     while kill -0 "$pid" 2>/dev/null; do
         current_mem=$(get_memory_usage "$pid")
         current_cpu=$(get_cpu_usage "$pid")
+        current_time=$(date +%s%N)
+        elapsed_ms=$(( (current_time - start_time) / 1000000 ))
         
         if [ "$current_mem" -gt "$peak_mem" ]; then
             peak_mem=$current_mem
@@ -81,12 +91,16 @@ profile_resources() {
             peak_cpu=$current_cpu
         fi
         
-        echo "$current_mem" >> "$mem_output_file"
-        echo "$current_cpu" >> "$cpu_output_file"
+        # Store time-series data
+        echo "$elapsed_ms $current_mem" >> "$mem_output_file"
+        echo "$elapsed_ms $current_cpu" >> "$cpu_output_file"
+        echo "$elapsed_ms $current_mem $current_cpu" >> "$timeline_file"
+        
+        sample_count=$((sample_count + 1))
         sleep 0.01 2>/dev/null || sleep 0.1
     done
     
-    echo "$peak_mem $peak_cpu"
+    echo "$peak_mem $peak_cpu $sample_count"
 }
 
 echo "=== Pi-beräkning med $DECIMALS decimaler (4 körningar, genomsnitt av 3 efter warmup) ==="