def get_migration_statistic(vm):
last_transfer_mem = 0
transfered_mem = 0
mig_stat = utils.Statistic()
for _ in range(30):
o = vm.monitor.info("migrate")
warning_msg = ("Migration already ended. Migration speed is"
" probably too high and will block vm while"
" filling its memory.")
fail_msg = ("Could not determine the transferred memory from"
" monitor data: %s" % o)
if isinstance(o, str):
if "status: active" not in o:
raise error.TestWarn(warning_msg)
try:
transfered_mem = int(get_mig_speed.search(o).groups()[0])
except (IndexError, ValueError):
raise error.TestFail(fail_msg)
else:
if o.get("status") != "active":
raise error.TestWarn(warning_msg)
try:
transfered_mem = o.get("ram").get("transferred") / (1024)
except (IndexError, ValueError):
raise error.TestFail(fail_msg)
real_mig_speed = (transfered_mem - last_transfer_mem) / 1024
last_transfer_mem = transfered_mem
logging.debug("Migration speed: %s MB/s" % (real_mig_speed))
mig_stat.record(real_mig_speed)
time.sleep(1)
return mig_stat
def test_simple_functionality(self):
stat = utils.Statistic()
stat.record(5)
stat.record(15)
stat.record(10)
self.assertEqual(10, stat.get_average())
self.assertEqual(5, stat.get_min())
self.assertEqual(15, stat.get_max())
