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#!/usr/bin/python -Ott
""" Benchmark template rendering times """
import os
import sys
import time
import signal
import logging
import operator
import Bcfg2.Logger
import Bcfg2.Server.Core
LOGGER = None
def get_sigint_handler(core):
""" Get a function that handles SIGINT/Ctrl-C by shutting down the
core and exiting properly."""
def hdlr(sig, frame): # pylint: disable=W0613
""" Handle SIGINT/Ctrl-C by shutting down the core and exiting
properly. """
core.shutdown()
os._exit(1) # pylint: disable=W0212
return hdlr
def main():
optinfo = \
dict(client=Bcfg2.Options.Option("Benchmark templates for one client",
cmd="--client",
odesc="<client>",
long_arg=True,
default=None),
)
optinfo.update(Bcfg2.Options.CLI_COMMON_OPTIONS)
optinfo.update(Bcfg2.Options.SERVER_COMMON_OPTIONS)
setup = Bcfg2.Options.OptionParser(optinfo)
setup.parse(sys.argv[1:])
if setup['debug']:
level = logging.DEBUG
elif setup['verbose']:
level = logging.INFO
else:
level = logging.WARNING
Bcfg2.Logger.setup_logging("bcfg2-test",
to_console=setup['verbose'] or setup['debug'],
to_syslog=False,
to_file=setup['logging'],
level=level)
logger = logging.getLogger(sys.argv[0])
core = Bcfg2.Server.Core.BaseCore(setup)
signal.signal(signal.SIGINT, get_sigint_handler(core))
logger.info("Bcfg2 server core loaded")
core.fam.handle_events_in_interval(0.1)
logger.debug("Repository events processed")
# how many times to render each template for each client
runs = 5
if setup['args']:
templates = setup['args']
else:
templates = []
if setup['client'] is None:
clients = [core.build_metadata(c) for c in core.metadata.clients]
else:
clients = [core.build_metadata(setup['client'])]
times = dict()
for metadata in clients:
for struct in core.GetStructures(metadata):
logger.info("Rendering templates from structure %s:%s" %
(struct.tag, struct.get("name")))
for entry in struct.xpath("//Path"):
path = entry.get("name")
logger.info("Rendering %s..." % path)
times[path] = dict()
avg = 0.0
for i in range(runs):
start = time.time()
try:
core.Bind(entry, metadata)
avg += (time.time() - start) / runs
except:
break
if avg:
logger.debug(" %s: %.02f sec" % (metadata.hostname, avg))
times[path][metadata.hostname] = avg
# print out per-file results
tmpltimes = []
for tmpl, clients in times.items():
try:
avg = sum(clients.values()) / len(clients)
except ZeroDivisionError:
continue
if avg > 0.01 or templates:
tmpltimes.append((tmpl, avg))
print("%-50s %s" % ("Template", "Average Render Time"))
for tmpl, avg in reversed(sorted(tmpltimes, key=operator.itemgetter(1))):
print("%-50s %.02f" % (tmpl, avg))
# TODO: complain about templates that on average were quick but
# for which some clients were slow
if __name__ == "__main__":
sys.exit(main())
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