diff --git a/namespace_conntrack_check.py b/namespace_conntrack_check.py
index 240d472..7e1ff65 100644
--- a/namespace_conntrack_check.py
+++ b/namespace_conntrack_check.py
@@ -12,12 +12,16 @@ while True:
     registry = CollectorRegistry()
     g_count = Gauge('test_nf_conntrack_count', 'nf_conntrack_count inside given namespace', ['host','namespace'],registry=registry )
     g_max = Gauge('test_nf_conntrack_max', 'nf_conntrack_max inside given namespace', ['host','namespace'],registry=registry )
+    g_time = Gauge('job_last_success_unixtime', 'Last time a batch job successfully finished', registry=registry)
+    g_time.set_to_current_time()
     for _item in netns.listnetns():
         if str(_item).startswith("qrouter"):
             nsp = NSPopen(_item, ['cat', '/proc/sys/net/netfilter/nf_conntrack_count'], stdout=subprocess.PIPE)
             result=nsp.communicate()
             nsresult_count=(result[0].decode('ascii').strip())
-
+            nsp.wait()
+            nsp.release()
+            
             nsp = NSPopen(_item, ['cat', '/proc/sys/net/netfilter/nf_conntrack_max'], stdout=subprocess.PIPE)
             result=nsp.communicate()
             nsresult_max=(result[0].decode('ascii').strip())