4576ca73ea
Due to the limit of Python interpreter, API service of Cinder can't really utilize underlying multi-core architecture even libraries like eventlet has been used. To make API service much more scalable, we'd adopt multi-process (worker) mode that has been used for long in Glance/Swift/Nova. The default behavior isn't changed with this patch, Cinder API service will still run in one process (default value of osapi_volume_workers is None). Implementation wise, a good portion of cinder/service.py has been removed because those content has been merged in Oslo version of service module. cinder/wsgi.py is also updated to adopt the change for multiple WSGI servers running in separate processes. Implement bp: multi-process-api-service DocImpact: 'New config option osapi_volume_workers is used to specify number of API service workers (OS processes) to launch for Cinder API service. Setting this config option to a proper value (e.g. osapi_volume_workers = # of CPU cores/threads of the machine) can greatly improve the total throughput of API service [# of API requests can be handled per second].' Also removed out-dated comments in bin/cinder-api due to the fact that this bug [1] has been fixed in eventlet 0.9.13 [1] https://bitbucket.org/eventlet/eventlet/issue/92/eventletgreen-override-of-oswaitpid Change-Id: I8361d0dc0d43040e48634ff1aee1324e5e0af466
58 lines
1.8 KiB
Python
Executable File
58 lines
1.8 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# Copyright 2010 United States Government as represented by the
|
|
# Administrator of the National Aeronautics and Space Administration.
|
|
# All Rights Reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
"""Starter script for Cinder OS API."""
|
|
|
|
import eventlet
|
|
eventlet.monkey_patch()
|
|
|
|
import os
|
|
import sys
|
|
|
|
from oslo.config import cfg
|
|
|
|
possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
|
|
os.pardir,
|
|
os.pardir))
|
|
if os.path.exists(os.path.join(possible_topdir, "cinder", "__init__.py")):
|
|
sys.path.insert(0, possible_topdir)
|
|
|
|
from cinder.openstack.common import gettextutils
|
|
gettextutils.install('cinder', lazy=False)
|
|
|
|
# Need to register global_opts
|
|
from cinder.common import config # noqa
|
|
from cinder.openstack.common import log as logging
|
|
from cinder import service
|
|
from cinder import utils
|
|
from cinder import version
|
|
|
|
|
|
CONF = cfg.CONF
|
|
|
|
|
|
if __name__ == '__main__':
|
|
CONF(sys.argv[1:], project='cinder',
|
|
version=version.version_string())
|
|
logging.setup("cinder")
|
|
utils.monkey_patch()
|
|
|
|
launcher = service.process_launcher()
|
|
server = service.WSGIService('osapi_volume')
|
|
launcher.launch_service(server, workers=server.workers or 1)
|
|
launcher.wait()
|