update readme

README.md

@@ -3,7 +3,7 @@
 
 Nohang is a highly configurable daemon for Linux which is able to correctly prevent [out of memory](https://en.wikipedia.org/wiki/Out_of_memory) (OOM) and keep system responsiveness in low memory conditions.
 
-![pic](https://i.imgur.com/DmqFxaB.png)
+![pic](https://i.imgur.com/ixF1JTt.png)
 
 ## What is the problem?
 

nohang_notify_low_mem

@@ -14,7 +14,7 @@ from argparse import ArgumentParser
 from os import listdir
 from subprocess import Popen, TimeoutExpired
 
-wait_time = 2
+wait_time = 10
 
 parser = ArgumentParser()
 
@@ -145,14 +145,18 @@ if len(b) > 0:
         dbus_tuple = dbus_env.partition('=')
         display_key, display_value = display_tuple[0], display_tuple[2]
         dbus_key, dbus_value = dbus_tuple[0], dbus_tuple[2]
-        try:
-            Popen(['sudo', '-u', username,
+
+        with Popen(['sudo', '-u', username,
             'notify-send', '--icon=dialog-warning',
             '{}'.format(title), '{}'.format(body)
             ], env={
-                    display_key: display_value, dbus_key: dbus_value
-                    }).wait(wait_time)
+            display_key: display_value,
+            dbus_key: dbus_value
+            }) as proc:
+                try:
+                    proc.wait(timeout=wait_time)
                 except TimeoutExpired:
+                    proc.kill()
                     print('TimeoutExpired: notify' + username)
 else:
     print('Low memory warnings: nobody logged in with GUI. Nothing to do.')