def __init__(self, window_size, drop_every_nth, false_pos_prob,
max_consecutive, max_thresh, ewma):
assert drop_every_nth > 0
assert false_pos_prob > 0.0 and false_pos_prob < 1.0
assert max_consecutive > 1
assert max_thresh > 0.0 and max_thresh < 1.0
assert ewma > 0.0 and ewma < 1.0
# parameters
self._window_size = window_size
self._false_pos_prob = false_pos_prob
self._max_consecutive = max_consecutive
self._thresh = max_thresh
# estimators
self._window = SizedList(window_size)
self._propagation_estimator = \
MedianOfMinWindow(window_size, drop_every_nth)
self._delay_on_full_estimator = \
MedianOfMaxWindow(window_size, drop_every_nth)
self._cond_var = EWMA(alpha=ewma) # variance when uncongested.
self._cond_mean = EWMA(alpha=ewma) # mean when uncongested.
# counters
self._init_samples = 0 # count of first samples.
self._consecutive = 0 # consecutive samples above the threshold.
# computed thresholds
self._n = None
self._thresh = None
if stats:
prop_vs_time = os.path.join(stats_dir, "prop_vs_time.plotdata")
fp = open(prop_vs_time, "w")
self._propagation_estimator = \
StreamTracer( self._propagation_estimator, fp )
full_vs_time = os.path.join(stats_dir, "full_vs_time.plotdata")
fp = open(full_vs_time, "w")
self._delay_on_full_estimator = \
StreamTracer( self._delay_on_full_estimator, fp )
cmean_vs_time = os.path.join(stats_dir, "cmean_vs_time.plotdata")
fp = open(cmean_vs_time, "w")
self._cond_mean = StreamTracer(self._cond_mean, fp)
cvar_vs_time = os.path.join(stats_dir, "cvar_vs_time.plotdata")
fp = open(cvar_vs_time, "w")
self._cond_var = StreamTracer(self._cond_var, fp)
thresh_vs_time = os.path.join(stats_dir, "thresh_vs_time.plotdata")
self._thfp = open(thresh_vs_time, "w")
n_v_time = os.path.join(stats_dir, "n_vs_time.plotdata")
self._nfp = open(n_vs_time, "w")
def __init__(self, window_size):
self._window = SizedList(window_size)
self._window_size = window_size
self._max_var = 0.0
if stats:
delay_var_vs_time = os.path.join(stats_dir,
"delay_var_vs_time.plotdata")
self._var_fp = open(delay_var_vs_time, "w")
max_var_vs_time = os.path.join(stats_dir,
"max_var_vs_time.plotdata")
self._max_var_fp = open(max_var_vs_time, "w")
_copy_gnuplot("var_vs_time.gnuplot")
def __init__(self, window_size):
self._window = SizedList(window_size)
