def get_factors(self, target_latency, pixel_count):
factors = []
if len(self.client_latency)>0:
#client latency: (we want to keep client latency as low as can be)
metric = "client-latency"
l = 0.005 + self.min_client_latency
wm = logp(l / 0.020)
factors.append(calculate_for_target(metric, l, self.avg_client_latency, self.recent_client_latency, aim=0.8, slope=0.005, smoothing=sqrt, weight_multiplier=wm))
if len(self.client_ping_latency)>0:
metric = "client-ping-latency"
l = 0.005 + self.min_client_ping_latency
wm = logp(l / 0.050)
factors.append(calculate_for_target(metric, l, self.avg_client_ping_latency, self.recent_client_ping_latency, aim=0.95, slope=0.005, smoothing=sqrt, weight_multiplier=wm))
if len(self.server_ping_latency)>0:
metric = "server-ping-latency"
l = 0.005 + self.min_server_ping_latency
wm = logp(l / 0.050)
factors.append(calculate_for_target(metric, l, self.avg_server_ping_latency, self.recent_server_ping_latency, aim=0.95, slope=0.005, smoothing=sqrt, weight_multiplier=wm))
#packet queue size: (includes packets from all windows)
factors.append(queue_inspect("packet-queue-size", self.packet_qsizes, smoothing=sqrt))
#packet queue pixels (global):
qpix_time_values = [(event_time, value) for event_time, _, value in list(self.damage_packet_qpixels)]
factors.append(queue_inspect("packet-queue-pixels", qpix_time_values, div=pixel_count, smoothing=sqrt))
#compression data queue: (This is an important metric since each item will consume a fair amount of memory and each will later on go through the other queues.)
factors.append(queue_inspect("compression-work-queue", self.compression_work_qsizes))
if self.mmap_size>0:
#full: effective range is 0.0 to ~1.2
full = 1.0-float(self.mmap_free_size)/self.mmap_size
#aim for ~33%
factors.append(("mmap-area", "%s%% full" % int(100*full), logp(3*full), (3*full)**2))
return factors
def calculate_batch_delay(wid, window_dimensions, has_focus, other_is_fullscreen, other_is_maximized, is_OR, soft_expired, batch, global_statistics, statistics):
"""
Calculates a new batch delay.
We first gather some statistics,
then use them to calculate a number of factors.
which are then used to adjust the batch delay in 'update_batch_delay'.
"""
low_limit = get_low_limit(global_statistics.mmap_size>0, window_dimensions)
#for each indicator: (description, factor, weight)
factors = statistics.get_factors(low_limit, batch.delay)
statistics.target_latency = statistics.get_target_client_latency(global_statistics.min_client_latency, global_statistics.avg_client_latency)
factors += global_statistics.get_factors(statistics.target_latency, low_limit)
#damage pixels waiting in the packet queue: (extract data for our window id only)
time_values = global_statistics.get_damage_pixels(wid)
factors.append(queue_inspect("damage-packet-queue-pixels", time_values, div=low_limit, smoothing=sqrt))
#boost window that has focus and OR windows:
factors.append(("focus", {"has_focus" : has_focus}, int(not has_focus), int(has_focus)))
factors.append(("override-redirect", {"is_OR" : is_OR}, int(not is_OR), int(is_OR)))
#if another window is fullscreen or maximized, slow us down:
factors.append(("fullscreen", {"other_is_fullscreen" : other_is_fullscreen}, 4*int(other_is_fullscreen), int(other_is_fullscreen)))
factors.append(("maximized", {"other_is_maximized" : other_is_maximized}, 4*int(other_is_maximized), int(other_is_maximized)))
#soft expired regions is a strong indicator of problems:
#(0 for none, up to max_soft_expired which is 5)
factors.append(("soft-expired", {"count" : soft_expired}, soft_expired, int(bool(soft_expired))))
#now use those factors to drive the delay change:
update_batch_delay(batch, factors)
def calculate_batch_delay(wid, window_dimensions, has_focus, other_is_fullscreen, other_is_maximized, is_OR, soft_expired, batch, global_statistics, statistics):
"""
Calculates a new batch delay.
We first gather some statistics,
then use them to calculate a number of factors.
which are then used to adjust the batch delay in 'update_batch_delay'.
"""
low_limit = get_low_limit(global_statistics.mmap_size>0, window_dimensions)
#for each indicator: (description, factor, weight)
factors = statistics.get_factors(low_limit, batch.delay)
statistics.target_latency = statistics.get_target_client_latency(global_statistics.min_client_latency, global_statistics.avg_client_latency)
factors += global_statistics.get_factors(statistics.target_latency, low_limit)
#damage pixels waiting in the packet queue: (extract data for our window id only)
time_values = global_statistics.get_damage_pixels(wid)
factors.append(queue_inspect("damage-packet-queue-pixels", time_values, div=low_limit, smoothing=sqrt))
#boost window that has focus and OR windows:
factors.append(("focus", {"has_focus" : has_focus}, int(not has_focus), int(has_focus)))
factors.append(("override-redirect", {"is_OR" : is_OR}, int(not is_OR), int(is_OR)))
#if another window is fullscreen or maximized, slow us down:
factors.append(("fullscreen", {"other_is_fullscreen" : other_is_fullscreen}, 4*int(other_is_fullscreen), int(other_is_fullscreen)))
factors.append(("maximized", {"other_is_maximized" : other_is_maximized}, 4*int(other_is_maximized), int(other_is_maximized)))
#soft expired regions is a strong indicator of problems:
#(0 for none, up to max_soft_expired which is 5)
factors.append(("soft-expired", {"count" : soft_expired}, soft_expired, int(bool(soft_expired))))
#now use those factors to drive the delay change:
update_batch_delay(batch, factors)
def calculate_batch_delay(wid, window_dimensions, has_focus, other_is_fullscreen, other_is_maximized, is_OR, soft_expired, batch, global_statistics, statistics, bandwidth_limit):
"""
Calculates a new batch delay.
We first gather some statistics,
then use them to calculate a number of factors.
which are then used to adjust the batch delay in 'update_batch_delay'.
"""
low_limit = get_low_limit(global_statistics.mmap_size>0, window_dimensions)
#for each indicator: (description, factor, weight)
factors = statistics.get_factors(bandwidth_limit)
statistics.target_latency = statistics.get_target_client_latency(global_statistics.min_client_latency, global_statistics.avg_client_latency)
factors += global_statistics.get_factors(low_limit)
#damage pixels waiting in the packet queue: (extract data for our window id only)
time_values = global_statistics.get_damage_pixels(wid)
def mayaddfac(metric, info, factor, weight):
if factor>=0.01 and weight>0.01:
factors.append((metric, info, factor, weight))
mayaddfac(*queue_inspect("damage-packet-queue-pixels", time_values, div=low_limit, smoothing=sqrt))
#boost window that has focus and OR windows:
mayaddfac("focus", {"has_focus" : has_focus}, int(not has_focus), int(has_focus))
mayaddfac("override-redirect", {"is_OR" : is_OR}, int(not is_OR), int(is_OR))
#soft expired regions is a strong indicator of problems:
#(0 for none, up to max_soft_expired which is 5)
mayaddfac("soft-expired", {"count" : soft_expired}, soft_expired, int(bool(soft_expired)))
#now use those factors to drive the delay change:
min_delay = 0
if batch.always:
min_delay = batch.min_delay
#if another window is fullscreen or maximized,
#make sure we don't use a very low delay (cap at 25fps)
if other_is_fullscreen or other_is_maximized:
min_delay = max(40, min_delay)
update_batch_delay(batch, factors, min_delay)
def get_factors(self, pixel_count):
factors = []
def mayaddfac(metric, info, factor, weight):
if weight>0.01:
factors.append((metric, info, factor, weight))
if self.client_latency:
#client latency: (we want to keep client latency as low as can be)
metric = "client-latency"
l = 0.005 + self.min_client_latency
wm = logp(l / 0.020)
mayaddfac(*calculate_for_target(metric, l, self.avg_client_latency, self.recent_client_latency,
aim=0.8, slope=0.005, smoothing=sqrt, weight_multiplier=wm))
if self.client_ping_latency:
metric = "client-ping-latency"
l = 0.005 + self.min_client_ping_latency
wm = logp(l / 0.050)
mayaddfac(*calculate_for_target(metric, l, self.avg_client_ping_latency, self.recent_client_ping_latency,
aim=0.95, slope=0.005, smoothing=sqrt, weight_multiplier=wm))
if self.server_ping_latency:
metric = "server-ping-latency"
l = 0.005 + self.min_server_ping_latency
wm = logp(l / 0.050)
mayaddfac(*calculate_for_target(metric, l, self.avg_server_ping_latency, self.recent_server_ping_latency,
aim=0.95, slope=0.005, smoothing=sqrt, weight_multiplier=wm))
#packet queue size: (includes packets from all windows)
mayaddfac(*queue_inspect("packet-queue-size", self.packet_qsizes, smoothing=sqrt))
#packet queue pixels (global):
qpix_time_values = tuple((event_time, value) for event_time, _, value in tuple(self.damage_packet_qpixels))
mayaddfac(*queue_inspect("packet-queue-pixels", qpix_time_values, div=pixel_count, smoothing=sqrt))
#compression data queue: (This is an important metric
#since each item will consume a fair amount of memory
#and each will later on go through the other queues.)
mayaddfac(*queue_inspect("compression-work-queue", self.compression_work_qsizes))
if self.mmap_size>0:
#full: effective range is 0.0 to ~1.2
full = 1.0-self.mmap_free_size/self.mmap_size
#aim for ~33%
mayaddfac("mmap-area", "%s%% full" % int(100*full), logp(3*full), (3*full)**2)
if self.congestion_value>0:
mayaddfac("congestion", {}, 1+self.congestion_value, self.congestion_value*10)
return factors