68 lines
1.9 KiB
Python
68 lines
1.9 KiB
Python
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import hotshot
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import os
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import time
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from django.conf import settings
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from django.db import connection
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try:
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PROFILE_LOG_BASE = settings.PROFILE_LOG_BASE
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except:
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PROFILE_LOG_BASE = "/tmp"
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def profile(log_file):
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"""Profile some callable.
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This decorator uses the hotshot profiler to profile some callable (like
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a view function or method) and dumps the profile data somewhere sensible
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for later processing and examination.
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It takes one argument, the profile log name. If it's a relative path, it
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places it under the PROFILE_LOG_BASE. It also inserts a time stamp into the
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file name, such that 'my_view.prof' become 'my_view-20100211T170321.prof',
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where the time stamp is in UTC. This makes it easy to run and compare
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multiple trials.
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"""
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if not os.path.isabs(log_file):
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log_file = os.path.join(PROFILE_LOG_BASE, log_file)
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def _outer(f):
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def _inner(*args, **kwargs):
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# Add a timestamp to the profile output when the callable
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# is actually called.
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(base, ext) = os.path.splitext(log_file)
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base = base + "-" + time.strftime("%Y%m%dT%H%M%S", time.gmtime())
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final_log_file = base + ext
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prof = hotshot.Profile(final_log_file)
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try:
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ret = prof.runcall(f, *args, **kwargs)
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finally:
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prof.close()
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return ret
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return _inner
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return _outer
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def timethis(fn):
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def wrapper(*args, **kwargs):
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start = time.time()
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result = fn(*args, **kwargs)
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print fn.__name__, 'took', time.time() - start
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return result
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return wrapper
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from pprint import pprint
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def sqlprint(fn):
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def wrapper(*args, **kwargs):
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connection.queries = list()
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result = fn(*args, **kwargs)
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print fn.__name__, 'issued'
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pprint(connection.queries)
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return result
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return wrapper
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