diff --git a/nohang/nohang b/nohang/nohang
index 6cce4a2..a330fff 100755
--- a/nohang/nohang
+++ b/nohang/nohang
@@ -1339,7 +1339,7 @@ def find_psi_metrics_value(psi_path, psi_metrics):
 def check_mem_and_swap():
     """
     """
-    with open('/proc/meminfo', 'rb') as f:
+    with open('/proc/meminfo', 'rb', buffering=0) as f:
         m_list = f.read().decode().split(' kB\n')
     return (int(m_list[2].split(':')[1]),
             int(m_list[swap_total_index].split(':')[1]),