[CPU] misc updates (#11906)

python/sglang/srt/utils/common.py

@@ -1623,13 +1623,18 @@ def get_cpu_memory_capacity():
         for numa_id in range(n_numa_node):
             file_meminfo = f"node{numa_id}/meminfo"
             with open(os.path.join(file_prefix, file_meminfo), "r") as f:
-                # 1st line contains 'MemTotal'
-                line = f.read().split("\n")[0]
-                numa_mem_list.append(int(line.split()[3]))
+                # MemTotal info is at the 1st line
+                line = f.readline()
+                # Expected format: "Node 0 MemTotal:       100000000 kB"
+                parts = line.split()
+                if len(parts) >= 4 and parts[2] == "MemTotal:":
+                    numa_mem_list.append(int(parts[3]))
+                else:
+                    raise ValueError(f"Unexpected format in {file_meminfo}: {line}")
         # Retrieved value in KB, need MB
         numa_mem = float(min(numa_mem_list) // 1024)
         return numa_mem
-    except FileNotFoundError:
+    except (FileNotFoundError, ValueError, IndexError):
         numa_mem = psutil.virtual_memory().total / n_numa_node
         # Retrieved value in Byte, need MB
         return float(numa_mem // (1 << 20))