def loadResults(cls, jsonFile):
"""Load results from json file
:param jsonFile : json format file to load from"""
ms = json.load(open(jsonFile, 'r'))
methods = {}
class Host(object):
def __init__(self, name):
self.name = name
for name, method_data in ms.iteritems():
methods[name] = {}
methods[name]['pairs'] = []
methods[name]['real_steps'] = method_data['real_steps']
for pairdata in method_data['pairs']:
s = cls.HostStats(
method=name,
host=Host(pairdata['host']),
target=Host(pairdata['target']),
baseline=DelayStats(**pairdata['baseline']),
baselineMeasures=[
DelayStats(**m) for m in pairdata['baselineMeasures']
],
measures=[DelayStats(**m) for m in pairdata['measures']])
methods[name]['pairs'].append(s)
info("Loading delay results done\n")
return methods
def computeBaseline(self):
sent = 0
received = 0
rttmin = 0
rttavg = 0
rttmax = 0
rttdev = 0
for measure in self.baselineMeasures:
sent += measure.sent
received += measure.received
rttmin = min(
rttmin,
measure.rttmin) if rttmin is not 0 else measure.rttmin
rttmax = max(rttmax, measure.rttmax)
rttavg += measure.rttavg
rttdev += measure.rttdev**2
rttdev = math.sqrt(rttdev / len(self.baselineMeasures))
rttavg /= len(self.baselineMeasures)
self.baseline = DelayStats(sent=sent,
received=received,
rttmin=rttmin,
rttavg=rttavg,
rttmax=rttmax,
rttdev=rttdev)
def subtrackBaseline(self, ping):
return DelayStats(ping.timestamp, ping.step, ping.sent,
ping.received,
ping.rttmin - self.baseline.rttmin,
ping.rttavg - self.baseline.rttavg,
ping.rttmax - self.baseline.rttmax, ping.rttdev)
def subtrackBaseline(self, sample):
"""Remove baseline from sample
:param sample : sample to correct
"""
return DelayStats(sample.timestamp, sample.step, sample.sent,
sample.received, sample.bw - self.baseline.bw)
