Add profiling support to Melange. By assigning profile_main_as_logs or profile_main_as_html to main variable you can turn on profiling. profile_main_as_logs will log profile data to App Engine console logs, profile_main_as_html will show profile data as html at the bottom of the page. If you want to profile app on deployed app just set the profiling function and deploy it.
Patch by: Pawel Solyga
Reviewed by: to-be-reviewed
#!/usr/bin/env python
"""
gather_profile_stats.py /path/to/dir/of/profiles
Note that the aggregated profiles must be read with pstats.Stats, not
hotshot.stats (the formats are incompatible)
"""
from hotshot import stats
import pstats
import sys, os
def gather_stats(p):
profiles = {}
for f in os.listdir(p):
if f.endswith('.agg.prof'):
path = f[:-9]
prof = pstats.Stats(os.path.join(p, f))
elif f.endswith('.prof'):
bits = f.split('.')
path = ".".join(bits[:-3])
prof = stats.load(os.path.join(p, f))
else:
continue
print "Processing %s" % f
if path in profiles:
profiles[path].add(prof)
else:
profiles[path] = prof
os.unlink(os.path.join(p, f))
for (path, prof) in profiles.items():
prof.dump_stats(os.path.join(p, "%s.agg.prof" % path))
if __name__ == '__main__':
gather_stats(sys.argv[1])