service.disable_profiling()
disable_profiling() prevents the profiler from profiling code until enable_profiling() is called.
Interface: disable_profiling()
Sample - Calling Method
service.disable_profiling()
- None
None
Remarks:- Used with enable_profiling() to control exactly what code is profiled.
- Can be used to ignore code that would produce inaccurate profiling results.
- Has no effect in forward testing.
Use enable_profiling() and disable_profiling to ensure accurate profiling results.
from cloudquant.interfaces import Strategy
class Enable_Profiling(Strategy):
# note that this doesn't start with "self" because it's a @staticmethod
@classmethod
def is_symbol_qualified(cls, symbol, md, service, account):
return symbol == 'AAL'
# called at the beginning of each instance
def on_start(self, md, order, service, account):
self.minute_bar_count = 0
def on_minute_bar(self, event, md, order, service, account, bar):
# disable profiling on the first call of the methods to avoid innacurate data
if self.minute_bar_count == 0:
service.disable_profiling()
# test calls
print 'service.time_to_string(event.timestamp)'
print md.L1.last
print md.bar.minute(-1)
print md.bar.daily(-1)
service.symbol_list.get_handle('448CBB9E-CFDE-4A55-BB7B-7521080E5A0B')
# re-enable profiling
if self.minute_bar_count == 0:
service.enable_profiling()
# terminate after the fifth bar
elif self.minute_bar_count == 4:
service.terminate()
# increment counter
self.minute_bar_count += 1
Profiling Results
Timer unit: 1e-06 s Total time: 0 s File: job/enable_profiling.py Function: is_symbol_qualified at line 6 Line # Hits Time Per Hit % Time Line Contents ============================================================== 6 @classmethod 7 def is_symbol_qualified(cls, symbol, md, service, account): 8 return symbol == 'AAL' Total time: 7e-06 s File: job/enable_profiling.py Function: on_start at line 11 Line # Hits Time Per Hit % Time Line Contents ============================================================== 11 def on_start(self, md, order, service, account): 12 1 7 7.0 100.0 self.minute_bar_count = 0 Total time: 0.056938 s File: job/enable_profiling.py Function: on_minute_bar at line 14 Line # Hits Time Per Hit % Time Line Contents ============================================================== 14 def on_minute_bar(self, event, md, order, service, account, bar): 15 16 # disable profiling on the first call of the methods to avoid innacurate data 17 5 16 3.2 0.0 if self.minute_bar_count == 0: 18 service.disable_profiling() 19 20 # test calls 21 4 67 16.8 0.1 print 'service.time_to_string(event.timestamp)' 22 4 89 22.2 0.2 print md.L1.last 23 4 28230 7057.5 49.6 print md.bar.minute(-1) 24 4 28360 7090.0 49.8 print md.bar.daily(-1) 25 4 142 35.5 0.2 service.symbol_list.get_handle('448CBB9E-CFDE-4A55-BB7B-7521080E5A0B') 26 27 # re-enable profiling 28 4 6 1.5 0.0 if self.minute_bar_count == 0: 29 service.enable_profiling() 30 31 # terminate after the fifth bar 32 4 2 0.5 0.0 elif self.minute_bar_count == 4: 33 1 18 18.0 0.0 service.terminate() 34 35 # increment counter 36 5 8 1.6 0.0 self.minute_bar_count += 1