Fix process check on older unix kernels

Fix #849
DataDog · Mar 6, 2014 · d54ef7e · d54ef7e
1 parent 2dc1032
commit d54ef7e
Showing 1 changed file with 8 additions and 4 deletions.
diff --git a/checks.d/process.py b/checks.d/process.py
@@ -109,9 +109,14 @@ def get_process_metrics(self, pids, psutil, cpu_check_interval):
                 if extended_metrics_0_6_0:
                     mem = p.get_ext_memory_info()
                     real += mem.rss - mem.shared
-                    ctx_switches = p.get_num_ctx_switches()
-                    voluntary_ctx_switches += ctx_switches.voluntary
-                    involuntary_ctx_switches += ctx_switches.involuntary
+                    try:
+                        ctx_switches = p.get_num_ctx_switches()
+                        voluntary_ctx_switches += ctx_switches.voluntary
+                        involuntary_ctx_switches += ctx_switches.involuntary
+                    except NotImplementedError:
+                        # Handle old Kernels which don't provide this info.
+                        voluntary_ctx_switches = None
+                        involuntary_ctx_switches = None
                 else:
                     mem = p.get_memory_info()
 
@@ -189,4 +194,3 @@ def check(self, instance):
         for metric, value in metrics.iteritems():
             if value is not None:
                 self.gauge(metric, value, tags=tags)
-