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# Copyright 2019, David Wilson
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors
# may be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# !mitogen: minify_safe
"""
mitogen.profiler
Record and report cProfile statistics from a run. Creates one aggregated
output file, one aggregate containing only workers, and one for the
top-level process.
Usage:
mitogen.profiler record <dest_path> <tool> [args ..]
mitogen.profiler report <dest_path> [sort_mode]
mitogen.profiler stat <sort_mode> <tool> [args ..]
Mode:
record: Record a trace.
report: Report on a previously recorded trace.
stat: Record and report in a single step.
Where:
dest_path: Filesystem prefix to write .pstats files to.
sort_mode: Sorting mode; defaults to "cumulative". See:
https://docs.python.org/2/library/profile.html#pstats.Stats.sort_stats
Example:
mitogen.profiler record /tmp/mypatch ansible-playbook foo.yml
mitogen.profiler dump /tmp/mypatch-worker.pstats
"""
from __future__ import print_function
import os
import pstats
import shutil
import subprocess
import sys
import tempfile
import time
def try_merge(stats, path):
try:
stats.add(path)
return True
except Exception as e:
print('%s failed. Will retry. %s' % (path, e))
return False
def merge_stats(outpath, inpaths):
first, rest = inpaths[0], inpaths[1:]
for x in range(1):
try:
stats = pstats.Stats(first)
except EOFError:
time.sleep(0.2)
continue
print("Writing %r..." % (outpath,))
for path in rest:
#print("Merging %r into %r.." % (os.path.basename(path), outpath))
for x in range(5):
if try_merge(stats, path):
break
time.sleep(0.2)
pstats.dump_stats(outpath)
def generate_stats(outpath, tmpdir):
print('Generating stats..')
all_paths = []
paths_by_ident = {}
for name in os.listdir(tmpdir):
if name.endswith('-dump.pstats'):
ident, _, pid = name.partition('-')
path = os.path.join(tmpdir, name)
all_paths.append(path)
paths_by_ident.setdefault(ident, []).append(path)
merge_stats('%s-all.pstat' % (outpath,), all_paths)
for ident, paths in paths_by_ident.items():
merge_stats('%s-%s.pstat' % (outpath, ident), paths)
def do_record(tmpdir, path, *args):
env = os.environ.copy()
fmt = '%(identity)s-%(pid)s.%(now)s-dump.%(ext)s'
env['MITOGEN_PROFILING'] = '1'
env['MITOGEN_PROFILE_FMT'] = os.path.join(tmpdir, fmt)
rc = subprocess.call(args, env=env)
generate_stats(path, tmpdir)
return rc
def do_report(tmpdir, path, sort='cumulative'):
stats = pstats.Stats(path).sort_stats(sort)
stats.print_stats(100)
def do_stat(tmpdir, sort, *args):
valid_sorts = pstats.Stats.sort_arg_dict_default
if sort not in valid_sorts:
sys.stderr.write('Invalid sort %r, must be one of %s\n' %
(sort, ', '.join(sorted(valid_sorts))))
sys.exit(1)
outfile = os.path.join(tmpdir, 'combined')
do_record(tmpdir, outfile, *args)
aggs = ('app.main', 'mitogen.broker', 'mitogen.child_main',
'mitogen.service.pool', 'Strategy', 'WorkerProcess',
'all')
for agg in aggs:
path = '%s-%s.pstat' % (outfile, agg)
if os.path.exists(path):
print()
print()
print('------ Aggregation %r ------' % (agg,))
print()
do_report(tmpdir, path, sort)
print()
def main():
if len(sys.argv) < 2 or sys.argv[1] not in ('record', 'report', 'stat'):
sys.stderr.write(__doc__.lstrip())
sys.exit(1)
func = globals()['do_' + sys.argv[1]]
tmpdir = tempfile.mkdtemp(prefix='mitogen.profiler')
try:
sys.exit(func(tmpdir, *sys.argv[2:]) or 0)
finally:
shutil.rmtree(tmpdir)
if __name__ == '__main__':
main()
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