def __init__(self,
iface,
log_directory,
cw_init,
beta,
k,
cw_min=0,
cw_max=1023,
enable_react=True):
super(QueueTuner, self).__init__(iface, '')
self.log_directory = log_directory
self.qos_logfile = open(f'{log_directory}/qos_react.csv', 'w')
self.be_logfile = open(f'{log_directory}/be_react.csv', 'w')
self.cr_observer = CollisionRateObserver(iface)
self.cw_min = cw_min
self.cw_max = cw_max
self.k = k
self.beta = beta
self.cw_prev_be = cw_init
self.cw_prev_qos = cw_init
self.smooth_be = None
self.smooth_qos = None
self.enable_react = enable_react
def __init__(self, iface, log_file, cw_init):
super(TunerCollisionRate, self).__init__(iface, log_file)
self.cr_observer = CollisionRateObserver(iface)
self.ao = AirtimeObserver(iface)
self.set_cw(cw_init)
self.cw_prev = cw_init
class QueueTuner(TunerBase):
def __init__(self, iface, log_directory, cw_init, beta, k, cw_min=0, cw_max=1023, enable_react=True):
super(QueueTuner, self).__init__(iface, '')
self.log_directory = log_directory
self.qos_logfile = open(f'{log_directory}/qos_react.csv', 'w')
self.be_logfile = open(f'{log_directory}/be_react.csv', 'w')
self.cr_observer = CollisionRateObserver(iface)
self.cw_min = cw_min
self.cw_max = cw_max
self.k = k
self.beta = beta
self.cw_prev_be = cw_init
self.cw_prev_qos = cw_init
self.smooth_be = None
self.smooth_qos = None
self.enable_react= enable_react
def update_cw_queues(self, be_alloc, be_airtime, qos_alloc, qos_airtime):
if self.enable_react:
if self.smooth_be is None:
self.smooth_be = be_airtime
else:
self.smooth_be = self.beta*be_airtime + (1.0 - self.beta) * self.smooth_be
if self.smooth_qos is None:
self.smooth_qos = qos_airtime
else:
self.smooth_qos = self.beta*qos_airtime + (1.0 - self.beta) * self.smooth_qos
cw_be = int((self.smooth_be - be_alloc) * self.k) + self.cw_prev_be
print(f'self.cw_min: {self.cw_min}, cw_be: {cw_be}')
cw_be = self.cw_min if cw_be < self.cw_min else cw_be
cw_be = self.cw_max if cw_be > self.cw_max else cw_be
cw_qos = int((self.smooth_qos - qos_alloc) * self.k) + self.cw_prev_qos
cw_qos = self.cw_min if cw_qos < self.cw_min else cw_qos
cw_qos = self.cw_max if cw_qos > self.cw_max else cw_qos
self.set_cw(cw_be, qumID=1, aifs=3)
self.set_cw(cw_qos, qumID=2, aifs=2)
self.log(be_alloc, be_airtime, self.cw_prev_be, cw_be, self.cr_observer.collision_rate(), 2, log_file=self.be_logfile)
self.log(qos_alloc, qos_airtime, self.cw_prev_qos, cw_qos, self.cr_observer.collision_rate(), 2, log_file=self.qos_logfile)
self.cw_prev_be = cw_be
self.cw_prev_qos = cw_qos
else:
self.log(be_alloc, be_airtime, -1, -1, self.cr_observer.collision_rate(), 2, log_file=self.be_logfile)
self.log(qos_alloc, qos_airtime, -1, -1, self.cr_observer.collision_rate(), 2, log_file=self.qos_logfile)
def __init__(self, iface, log_file):
# TODO: implement iface --> phy translation
assert(iface == 'wls33')
phy = 'phy0'
self.cr_observer = CollisionRateObserver(iface)
self.txq_params_fname = '/sys/kernel/debug/ieee80211/'
self.txq_params_fname += phy
self.txq_params_fname += '/ath9k/txq_params'
self.log_file = log_file
def __init__(self, iface, log_file, cw_init, beta, k, qos):
super(TunerSALT, self).__init__(iface, log_file)
self.cr_observer = CollisionRateObserver(iface)
self.k = k
self.beta = beta
self.cw_prev = cw_init
self.smooth = None
self.qos = qos
self.set_cw(cw_init)
def __init__(self, iface, log_file, cw_init):
super(TunerRENEW, self).__init__(iface, log_file)
self.cmd = [
'cat',
'/sys/kernel/debug/ieee80211/phy0/statistics/dot11RTSSuccessCount'
]
self.cr_observer = CollisionRateObserver(iface)
self.observer = ChannelObserver()
self.n = int(subprocess.check_output(self.cmd))
self.n_old = None
self.cw_prev = cw_init
class TunerCollisionRate(TunerBase):
def __init__(self, iface, log_file, cw_init):
super(TunerCollisionRate, self).__init__(iface, log_file)
self.cr_observer = CollisionRateObserver(iface)
self.ao = AirtimeObserver(iface)
self.set_cw(cw_init)
self.cw_prev = cw_init
def update_cw(self):
coll_rate = self.cr_observer.collision_rate()
airtime = self.ao.airtime()
if coll_rate < .1:
cw = self.cw_prev / 2
elif coll_rate > .2:
cw = self.cw_prev * 2
else:
cw = self.cw_prev
cw = 2 if cw < 2 else cw
cw = 1023 if cw > 1023 else cw
cw = int(cw)
self.set_cw(cw)
self.log(-1, airtime, self.cw_prev, cw, coll_rate)
self.cw_prev = cw
class TunerSALT(TunerBase):
def __init__(self, iface, log_file, cw_init, beta, k, qos):
super(TunerSALT, self).__init__(iface, log_file)
self.cr_observer = CollisionRateObserver(iface)
self.k = k
self.beta = beta
self.cw_prev = cw_init
self.smooth = None
self.qos = qos
self.set_cw(cw_init)
def update_cw(self, alloc, airtime):
if self.smooth is None:
self.smooth = airtime
else:
self.smooth = self.beta * airtime + (1.0 - self.beta) * self.smooth
cw = int((self.smooth - alloc) * self.k) + self.cw_prev
cw = 0 if cw < 0 else cw
cw = 1023 if cw > 1023 else cw
aifs = 2 if self.qos else 3
self.set_cw(cw, aifs=aifs)
self.log(alloc, airtime, self.cw_prev, cw,
self.cr_observer.collision_rate(), aifs)
self.cw_prev = cw
class TunerRENEW(TunerBase):
def __init__(self, iface, log_file, cw_init):
super(TunerRENEW, self).__init__(iface, log_file)
self.cmd = [
'cat',
'/sys/kernel/debug/ieee80211/phy0/statistics/dot11RTSSuccessCount'
]
self.cr_observer = CollisionRateObserver(iface)
self.observer = ChannelObserver()
self.n = int(subprocess.check_output(self.cmd))
self.n_old = None
self.cw_prev = cw_init
def update_cw(self,
alloc,
airtime,
VO_q_len=-1,
VI_q_len=-1,
BE_q_len=-1,
BK_q_len=-1):
self.observer.update()
busy = self.observer.surveysays('busy')
self.n_old = self.n
self.n = int(subprocess.check_output(self.cmd))
n = self.n - self.n_old
n_alloc = n * alloc if n * alloc != 0 else 1
cw = int((2 / 9e-3) * (airtime * ((1 - alloc) / (n_alloc)) * busy))
cw = 15 if cw < 15 else cw
cw = 1023 if cw > 1023 else cw
self.set_cw(cw)
self.log(alloc, airtime, self.cw_prev, cw,
self.cr_observer.collision_rate(), 2, VO_q_len, VI_q_len,
BE_q_len, BK_q_len)
self.cw_prev = cw
class TunerBase(object):
def __init__(self, iface, log_file):
# TODO: implement iface --> phy translation
assert(iface == 'wls33')
phy = 'phy0'
self.cr_observer = CollisionRateObserver(iface)
self.txq_params_fname = '/sys/kernel/debug/ieee80211/'
self.txq_params_fname += phy
self.txq_params_fname += '/ath9k/txq_params'
self.log_file = log_file
def set_cw(self, cw, qumID=1, aifs=2, burst=0):
# qumId = qumID
# aifs = aifs
cwmin = int(cw)
cwmax = int(cw)
# burst = burst
txq_params_msg = '{} {} {} {} {}'.format(qumID, aifs, cwmin, cwmax, burst)
f_cw = open(self.txq_params_fname, 'w')
f_cw.write(txq_params_msg)
f_cw.close()
def log(self, alloc, airtime, cw_prev, cw, cr, aifs, log_file=None):
if log_file is None:
log_file = self.log()
log_file.write('{:.5f},{:.5f},{:.5f},{},{},{:.5f},{}\n'.format(
time.time(), alloc, airtime, cw_prev, cw, cr, aifs))
log_file.flush()
def update_cw(self, alloc, airtime):
self.log(alloc, airtime, -1, -1, self.cr_observer.collision_rate(), -1)