Perf plot

analysis/memory_x86.py

@@ -0,0 +1,63 @@
+from pathlib import Path
+import re
+
+LOG_DIR = Path('measurements/memory/x86')
+CPU_FREQ_GHZ = 2.0
+
+
+def parse_sysbench_log(file_path):
+  """Parses a single sysbench log file to extract memory bandwidth in MiB/s."""
+  try:
+    with open(file_path, 'r') as f:
+      content = f.read()
+
+    match = re.search(r'(\d+\.?\d*)\s+MiB/sec', content)
+
+    if match:
+      return float(match.group(1))
+    else:
+      print(f"Warning: Could not find 'MiB/sec' in {file_path.name}")
+      return None
+  except Exception as e:
+    print(f'Error reading {file_path}: {e}')
+    return None
+
+
+def main():
+  if not LOG_DIR.exists():
+    print(f"Error: Directory '{LOG_DIR}' not found.")
+    return
+
+  bandwidths_mib_s = []
+
+  log_files = sorted(LOG_DIR.glob('*.log'))
+
+  print(f'Found {len(log_files)} log files.')
+
+  for file_path in log_files:
+    val = parse_sysbench_log(file_path)
+    if val is not None:
+      bandwidths_mib_s.append(val)
+
+  if not bandwidths_mib_s:
+    print('No valid bandwidth data found.')
+    return
+
+  avg_mi_b_s = sum(bandwidths_mib_s) / len(bandwidths_mib_s)
+
+  bytes_per_second = avg_mi_b_s * (1024**2)
+  cycles_per_second = CPU_FREQ_GHZ * 1e9
+
+  bytes_per_cycle = bytes_per_second / cycles_per_second
+
+  print('-' * 40)
+  print(f'Files analyzed: {len(bandwidths_mib_s)}')
+  print(f'Average Bandwidth: {avg_mi_b_s:.2f} MiB/sec')
+  print(f'CPU Frequency:     {CPU_FREQ_GHZ} GHz')
+  print('-' * 40)
+  print(f'Result:            {bytes_per_cycle:.2f} bytes/cycle')
+  print('-' * 40)
+
+
+if __name__ == '__main__':
+  main()