diff --git a/perf-scripts/flow-manager-perf.py b/perf-scripts/flow-manager-perf.py
new file mode 100644
index 0000000..3168f63
--- /dev/null
+++ b/perf-scripts/flow-manager-perf.py
@@ -0,0 +1,78 @@
+#!/usr/bin/python
+'''
+ Script that tests Flow Manager performance
+ Author: Brian O'Connor <bocon@onlab.us>
+
+'''
+
+import csv
+import os
+import sys
+from time import sleep, strftime
+from subprocess import Popen, call, check_output, PIPE
+from datetime import datetime
+
+try:
+  import pexpect
+except:
+  # install pexpect if it cannot be found and re-import
+  print '* Installing Pexpect'
+  call( 'apt-get install -y python-pexpect', stdout=PIPE, shell=True )
+  import pexpect
+
+ONOS_HOME = '..'
+ONOS_LOG = '%s/onos-logs/onos.%s.log' % ( ONOS_HOME, check_output( 'hostname').strip() )
+ONOS_LOG = '/tmp/onos-1.logs/onos.onos-vm.log'
+print "ONOS Log File:", ONOS_LOG
+
+PORT = 's1-eth2'
+N = 100
+
+# ----------------- Running the test and output  -------------------------
+
+# 17:43:37.206 [main] ERROR n.o.o.o.f.PerformanceMonitor - Performance Results: {a=0.001ms, b=0.0ms, c=0.0ms} with measurement overhead: 0.022 ms
+
+def test():
+  # Start tailing the onos log
+  tail = pexpect.spawn( "tail -0f %s" % ONOS_LOG )
+
+  # Take link down
+  call( 'ifconfig %s down' % PORT, shell=True )
+
+  # Wait for performance results in the log
+  tail.expect('Performance Results: \{([^\}]*)\} with measurement overhead: ([\d.]+) ms', timeout=6000)
+  s = tail.match.group(1)
+  overhead = float( tail.match.group(2) )
+  results = dict( re.findall(r'(\w[\w\s]*)=([\d.]+)', s) )
+
+  # Output results
+  print "* Results:", results, "Overhead:", overhead
+ 
+  # Bring port back up
+  call( 'ifconfig %s up' % PORT, shell=True )
+
+  tail.terminate()
+  return results
+
+def outputResults(filename, results):
+  with open(filename, 'a') as csvfile:
+    writer = csv.writer(csvfile)
+    writer.writerow(results)
+
+def runPerf(n):
+  filename = 'results-flowmanager-%s.csv' % strftime( '%Y%m%d-%H%M%S' )
+  print 'Starting experiments:'
+  start = datetime.now()
+  for i in range(n):
+    results = test()
+    outputResults(filename, results)
+    sys.stdout.write('.')
+    sys.stdout.flush()
+    sleep(5000) # sleep for 5 seconds between tests
+  totalTime = datetime.now() - start
+  print '\nExperiments complete in %s (h:m:s.s)' % totalTime
+
+if __name__ == '__main__':
+  n = N 
+  runPerf(n)
+