Mercurial > p > roundup > code
view test/test_jinja2.py @ 6565:2c2dbfc332ba
Try to handle multiple connections better.
The session database is a hot spot. When multiple requests (e.g. 20)
come in at the same time session database contention can get great.
The original code didn't retry session database access when the open
failed. This resulted in errors at the client.
The second pass delayed 0.01 seconds and retried. It was better but we
still had multiple second stalls. I think the first request got in,
everybody else backed up and then retried at the same time. Again they
stepped on each other. With logging I would see many counters go all
the way to low single digits or to -1 indicating falure.
This pass uses randomint to generate delays from 0-.125 seconds in 5ms
increments. This performs better in testing. I rarely saw a counter
less than 13 (2 failed retries). Current logging starts after 6
failures and counts down until success or failure.
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Thu, 16 Dec 2021 20:02:00 -0500 |
| parents | d26921b851c3 |
| children |
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#-*- encoding: utf-8 -*- """ Testing the jinja2 templating engine of roundup-tracker. Copyright: 2016 Intevation GmbH. Author: Bernhard E. Reiter <bernhard@intevation.de> This module is Free Software under the Roundup licensing of 1.5, see the COPYING.txt file coming with Roundup. Just a test file template for now. """ import shutil # only, needed for tearDown. TODO: Remove when refactored. import unittest from . import db_test_base TESTSUITE_IDENTIFIER='jinja2' class TestCase_Zero(unittest.TestCase): def test_zero(self): self.assertEqual(True, True) class Jinja2Test(object): """Sets up and tears down an instance with database contents. Setup and teardown modelled after the use of db_test_base by several modules like test_xmlrpc and test_userauditor. TODO: Should probably be moved to a base case in db_test_base.py. """ backend = None # can be used to create tests per backend, see test_xmlrpc def setUp(self): self.dirname = '_test_' + TESTSUITE_IDENTIFIER self.instance = db_test_base.setupTracker(self.dirname, self.backend) self.db = self.instance.open('admin') def tearDown(self): self.db.close() try: shutil.rmtree(self.dirname) except OSError as error: if error.errno not in (errno.ENOENT, errno.ESRCH): raise def test_zero(self): """Do nothing just make sure that setup and teardown works.""" pass # only using one database backend for now, not sure if doing all # backends will keep the test focussed enough to be useful for the used # computing time. Would be okay to change in the future. class anydbmJinja2Test(Jinja2Test, unittest.TestCase): backend = 'anydbm' # vim: ts=4 et sts=4 sw=4 ai :
