$OpenBSD$

index f21f77b..e8d6013 100644
--- testing/mozbase/mozsystemmonitor/mozsystemmonitor/resourcemonitor.py.orig	Fri Feb 20 15:40:39 2015
+++ testing/mozbase/mozsystemmonitor/mozsystemmonitor/resourcemonitor.py	Fri Feb 20 15:40:39 2015
@@ -19,6 +19,14 @@ from collections import (
 
 from contextlib import contextmanager
 
+def get_disk_io_counters():
+    try:
+        io_counters = psutil.disk_io_counters()
+    except RuntimeError:
+        io_counters = []
+
+    return io_counters
+
 
 def _collect(pipe, poll_interval):
     """Collects system metrics.
@@ -34,7 +42,7 @@ def _collect(pipe, poll_interval):
     # We should ideally use a monotonic clock. However, Python 2.7 doesn't
     # make a monotonic clock available on all platforms. Python 3.3 does!
     last_time = time.time()
-    io_last = psutil.disk_io_counters()
+    io_last = get_disk_io_counters()
     cpu_last = psutil.cpu_times(True)
     swap_last = psutil.swap_memory()
     psutil.cpu_percent(None, True)
@@ -45,7 +53,7 @@ def _collect(pipe, poll_interval):
     sleep_interval = poll_interval
 
     while not pipe.poll(sleep_interval):
-        io = psutil.disk_io_counters()
+        io = get_disk_io_counters()
         cpu_times = psutil.cpu_times(True)
         cpu_percent = psutil.cpu_percent(None, True)
         virt_mem = psutil.virtual_memory()
@@ -176,7 +184,7 @@ class SystemResourceMonitor(object):
 
         cpu_percent = psutil.cpu_percent(0.0, True)
         cpu_times = psutil.cpu_times(False)
-        io = psutil.disk_io_counters()
+        io = get_disk_io_counters()
         virt = psutil.virtual_memory()
         swap = psutil.swap_memory()