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Remove the psutil dependency (#6318) 

* remove psutil and replace with resource
This commit is contained in:
Amber Brown 2019-11-05 05:05:48 +11:00 committed by GitHub
parent cc6243b4c0
commit 4e1c7b79fa
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5 changed files with 146 additions and 83 deletions
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1
changelog.d/6318.misc Normal file
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@ -0,0 +1 @@
Remove the dependency on psutil and replace functionality with the stdlib `resource` module.

174
synapse/app/homeserver.py
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@ -19,12 +19,13 @@ from __future__ import print_function
import gc
import logging
import math
import os
import resource
import sys
from six import iteritems
import psutil
from prometheus_client import Gauge
from twisted.application import service
@ -471,6 +472,87 @@ class SynapseService(service.Service):
return self._port.stopListening()
# Contains the list of processes we will be monitoring
# currently either 0 or 1
_stats_process = []
@defer.inlineCallbacks
def phone_stats_home(hs, stats, stats_process=_stats_process):
logger.info("Gathering stats for reporting")
now = int(hs.get_clock().time())
uptime = int(now - hs.start_time)
if uptime < 0:
uptime = 0
stats["homeserver"] = hs.config.server_name
stats["server_context"] = hs.config.server_context
stats["timestamp"] = now
stats["uptime_seconds"] = uptime
version = sys.version_info
stats["python_version"] = "{}.{}.{}".format(
version.major, version.minor, version.micro
)
stats["total_users"] = yield hs.get_datastore().count_all_users()
total_nonbridged_users = yield hs.get_datastore().count_nonbridged_users()
stats["total_nonbridged_users"] = total_nonbridged_users
daily_user_type_results = yield hs.get_datastore().count_daily_user_type()
for name, count in iteritems(daily_user_type_results):
stats["daily_user_type_" + name] = count
room_count = yield hs.get_datastore().get_room_count()
stats["total_room_count"] = room_count
stats["daily_active_users"] = yield hs.get_datastore().count_daily_users()
stats["monthly_active_users"] = yield hs.get_datastore().count_monthly_users()
stats["daily_active_rooms"] = yield hs.get_datastore().count_daily_active_rooms()
stats["daily_messages"] = yield hs.get_datastore().count_daily_messages()
r30_results = yield hs.get_datastore().count_r30_users()
for name, count in iteritems(r30_results):
stats["r30_users_" + name] = count
daily_sent_messages = yield hs.get_datastore().count_daily_sent_messages()
stats["daily_sent_messages"] = daily_sent_messages
stats["cache_factor"] = CACHE_SIZE_FACTOR
stats["event_cache_size"] = hs.config.event_cache_size
#
# Performance statistics
#
old = stats_process[0]
new = (now, resource.getrusage(resource.RUSAGE_SELF))
stats_process[0] = new
# Get RSS in bytes
stats["memory_rss"] = new[1].ru_maxrss
# Get CPU time in % of a single core, not % of all cores
used_cpu_time = (new[1].ru_utime + new[1].ru_stime) - (
old[1].ru_utime + old[1].ru_stime
)
if used_cpu_time == 0 or new[0] == old[0]:
stats["cpu_average"] = 0
else:
stats["cpu_average"] = math.floor(used_cpu_time / (new[0] - old[0]) * 100)
#
# Database version
#
stats["database_engine"] = hs.get_datastore().database_engine_name
stats["database_server_version"] = hs.get_datastore().get_server_version()
logger.info("Reporting stats to %s: %s" % (hs.config.report_stats_endpoint, stats))
try:
yield hs.get_proxied_http_client().put_json(
hs.config.report_stats_endpoint, stats
)
except Exception as e:
logger.warning("Error reporting stats: %s", e)
def run(hs):
PROFILE_SYNAPSE = False
if PROFILE_SYNAPSE:
@ -497,91 +579,19 @@ def run(hs):
reactor.run = profile(reactor.run)
clock = hs.get_clock()
start_time = clock.time()
stats = {}
# Contains the list of processes we will be monitoring
# currently either 0 or 1
stats_process = []
def performance_stats_init():
_stats_process.clear()
_stats_process.append(
(int(hs.get_clock().time(), resource.getrusage(resource.RUSAGE_SELF)))
)
def start_phone_stats_home():
return run_as_background_process("phone_stats_home", phone_stats_home)
@defer.inlineCallbacks
def phone_stats_home():
logger.info("Gathering stats for reporting")
now = int(hs.get_clock().time())
uptime = int(now - start_time)
if uptime < 0:
uptime = 0
stats["homeserver"] = hs.config.server_name
stats["server_context"] = hs.config.server_context
stats["timestamp"] = now
stats["uptime_seconds"] = uptime
version = sys.version_info
stats["python_version"] = "{}.{}.{}".format(
version.major, version.minor, version.micro
return run_as_background_process(
"phone_stats_home", phone_stats_home, hs, stats
)
stats["total_users"] = yield hs.get_datastore().count_all_users()
total_nonbridged_users = yield hs.get_datastore().count_nonbridged_users()
stats["total_nonbridged_users"] = total_nonbridged_users
daily_user_type_results = yield hs.get_datastore().count_daily_user_type()
for name, count in iteritems(daily_user_type_results):
stats["daily_user_type_" + name] = count
room_count = yield hs.get_datastore().get_room_count()
stats["total_room_count"] = room_count
stats["daily_active_users"] = yield hs.get_datastore().count_daily_users()
stats["monthly_active_users"] = yield hs.get_datastore().count_monthly_users()
stats[
"daily_active_rooms"
] = yield hs.get_datastore().count_daily_active_rooms()
stats["daily_messages"] = yield hs.get_datastore().count_daily_messages()
r30_results = yield hs.get_datastore().count_r30_users()
for name, count in iteritems(r30_results):
stats["r30_users_" + name] = count
daily_sent_messages = yield hs.get_datastore().count_daily_sent_messages()
stats["daily_sent_messages"] = daily_sent_messages
stats["cache_factor"] = CACHE_SIZE_FACTOR
stats["event_cache_size"] = hs.config.event_cache_size
if len(stats_process) > 0:
stats["memory_rss"] = 0
stats["cpu_average"] = 0
for process in stats_process:
stats["memory_rss"] += process.memory_info().rss
stats["cpu_average"] += int(process.cpu_percent(interval=None))
stats["database_engine"] = hs.get_datastore().database_engine_name
stats["database_server_version"] = hs.get_datastore().get_server_version()
logger.info(
"Reporting stats to %s: %s" % (hs.config.report_stats_endpoint, stats)
)
try:
yield hs.get_proxied_http_client().put_json(
hs.config.report_stats_endpoint, stats
)
except Exception as e:
logger.warning("Error reporting stats: %s", e)
def performance_stats_init():
try:
process = psutil.Process()
# Ensure we can fetch both, and make the initial request for cpu_percent
# so the next request will use this as the initial point.
process.memory_info().rss
process.cpu_percent(interval=None)
logger.info("report_stats can use psutil")
stats_process.append(process)
except (AttributeError):
logger.warning("Unable to read memory/cpu stats. Disabling reporting.")
def generate_user_daily_visit_stats():
return run_as_background_process(
@ -626,7 +636,7 @@ def run(hs):
if hs.config.report_stats:
logger.info("Scheduling stats reporting for 3 hour intervals")
clock.looping_call(start_phone_stats_home, 3 * 60 * 60 * 1000)
clock.looping_call(start_phone_stats_home, 3 * 60 * 60 * 1000, hs, stats)
# We need to defer this init for the cases that we daemonize
# otherwise the process ID we get is that of the non-daemon process
@ -634,7 +644,7 @@ def run(hs):
# We wait 5 minutes to send the first set of stats as the server can
# be quite busy the first few minutes
clock.call_later(5 * 60, start_phone_stats_home)
clock.call_later(5 * 60, start_phone_stats_home, hs, stats)
_base.start_reactor(
"synapse-homeserver",

1
synapse/python_dependencies.py
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@ -61,7 +61,6 @@ REQUIREMENTS = [
"bcrypt>=3.1.0",
"pillow>=4.3.0",
"sortedcontainers>=1.4.4",
"psutil>=2.0.0",
"pymacaroons>=0.13.0",
"msgpack>=0.5.2",
"phonenumbers>=8.2.0",

2
synapse/server.py
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@ -221,6 +221,7 @@ class HomeServer(object):
self.hostname = hostname
self._building = {}
self._listening_services = []
self.start_time = None
self.clock = Clock(reactor)
self.distributor = Distributor()
@ -240,6 +241,7 @@ class HomeServer(object):
datastore = self.DATASTORE_CLASS(conn, self)
self.datastores = DataStores(datastore, conn, self)
conn.commit()
self.start_time = int(self.get_clock().time())
logger.info("Finished setting up.")
def setup_master(self):

51
tests/test_phone_home.py Normal file
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@ -0,0 +1,51 @@
# -*- coding: utf-8 -*-
# Copyright 2019 Matrix.org Foundation C.I.C.
#
# 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.
import resource
import mock
from synapse.app.homeserver import phone_stats_home
from tests.unittest import HomeserverTestCase
class PhoneHomeStatsTestCase(HomeserverTestCase):
def test_performance_frozen_clock(self):
"""
If time doesn't move, don't error out.
"""
past_stats = [
(self.hs.get_clock().time(), resource.getrusage(resource.RUSAGE_SELF))
]
stats = {}
self.get_success(phone_stats_home(self.hs, stats, past_stats))
self.assertEqual(stats["cpu_average"], 0)
def test_performance_100(self):
"""
1 second of usage over 1 second is 100% CPU usage.
"""
real_res = resource.getrusage(resource.RUSAGE_SELF)
old_resource = mock.Mock(spec=real_res)
old_resource.ru_utime = real_res.ru_utime - 1
old_resource.ru_stime = real_res.ru_stime
old_resource.ru_maxrss = real_res.ru_maxrss
past_stats = [(self.hs.get_clock().time(), old_resource)]
stats = {}
self.reactor.advance(1)
self.get_success(phone_stats_home(self.hs, stats, past_stats))
self.assertApproximates(stats["cpu_average"], 100, tolerance=2.5)