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New page: Just a quick dump of the snippets I use for profiling: First use a system-wide profiler like sysprof Next, profile python code, open the output with kcachegrind: import os import cPro...
Just a quick dump of the snippets I use for profiling:
First use a system-wide profiler like sysprof
Next, profile python code, open the output with kcachegrind:
import os
import cProfile
import lsprofcalltree # http://www.gnome.org/~johan/lsprofcalltree.py
profiler = cProfile.Profile()
profiler.enable()
### code to profile ###
profiler.disable()
k = lsprofcalltree.KCacheGrind(profiler)
data = open('/tmp/import.kgrind', 'w+')
k.output(data)
data.close()
Check for leaks:
import gobject
gobject.timeout_add(10000, self._log_mem_usage)
def _log_mem_usage(self):
import analysis, os, gc
for obj in gc.get_objects():
if hasattr(obj, '__class__') and obj.__class__.__name__.find('ChooserListView') > -1:
logging.debug(obj)
for i in range(0, 10):
gc.collect()
logging.debug('mem: %i' % analysis.Analysis(os.getpid()).ApproxRealMemoryUsage())
return True
Rendering time of a widget/window:
def do_expose_event(self, event):
import time
t = time.time()
hippo.Canvas.do_expose_event(self, event)
logging.debug('listview expose event: %r' % (time.time() - t))
First use a system-wide profiler like sysprof
Next, profile python code, open the output with kcachegrind:
import os
import cProfile
import lsprofcalltree # http://www.gnome.org/~johan/lsprofcalltree.py
profiler = cProfile.Profile()
profiler.enable()
### code to profile ###
profiler.disable()
k = lsprofcalltree.KCacheGrind(profiler)
data = open('/tmp/import.kgrind', 'w+')
k.output(data)
data.close()
Check for leaks:
import gobject
gobject.timeout_add(10000, self._log_mem_usage)
def _log_mem_usage(self):
import analysis, os, gc
for obj in gc.get_objects():
if hasattr(obj, '__class__') and obj.__class__.__name__.find('ChooserListView') > -1:
logging.debug(obj)
for i in range(0, 10):
gc.collect()
logging.debug('mem: %i' % analysis.Analysis(os.getpid()).ApproxRealMemoryUsage())
return True
Rendering time of a widget/window:
def do_expose_event(self, event):
import time
t = time.time()
hippo.Canvas.do_expose_event(self, event)
logging.debug('listview expose event: %r' % (time.time() - t))