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https://github.com/FirebirdSQL/firebird-qa.git
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86 lines
3.5 KiB
Python
86 lines
3.5 KiB
Python
#coding:utf-8
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"""
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ID: issue-7188
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ISSUE: 7188
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TITLE: Memory leak in GDS32.DLL(FBClient.DLL), when multi-database transaction has done
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DESCRIPTION:
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Test obtains PID of currently running Python script which serves as CLIENT for server.
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Then we get values of RSS and VMS by invoking client_process.memory_info() and store them.
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After that, we use DistributedTransactionManager instance for making two connections to different
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databases and run <LOOP_COUNT> times Tx start and commit (in loop).
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Finally, we get again RSS and VMS values for currently running Python process, and compare them
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with initially stored ones.
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Ratio between appropriate final and initial values of RSS and VMS must not exceed thresholds
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defined by RSS_MAX_DIFF and VMS_MAX_DIFF.
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NOTES:
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[21.07.2024] pzotov
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Confirmed memory leak in the CLIENT process (i.e. python.exe) when running test on:
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* 5.0.0.511 (09-jun-2022):
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memo_rss_list=[46988, 54192] diff = 1.15332
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memo_vms_list=[37048, 44228] diff = 1.19380
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* 4.0.2.2776 (10.06.2022):
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memo_rss_list=[47248, 54456] diff = 1.15255
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memo_vms_list=[37240, 44424] diff = 1.19291
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Aftef fix:
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* 5.0.1.514:
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memo_rss_list=[47164, 47184] diff = 1.000424
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memo_vms_list=[37200, 37200] no_diff
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* 4.0.2.2779:
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memo_rss_list=[47256, 47272] diff = 1.0003386
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memo_vms_list=[37172, 37172] no_diff
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Checked on 6.0.0.396, 5.0.1.1440, 4.0.53127.
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Thanks to Vlad for suggestions about test implementation.
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"""
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import os
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import pytest
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from firebird.qa import *
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from firebird.driver import DistributedTransactionManager, tpb, Isolation
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import psutil
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db1 = db_factory(filename='core_7188_a.fdb')
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db2 = db_factory(filename='core_7188_b.fdb')
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tmp_user1 = user_factory('db1', name='tmp$7188_1', password='123')
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tmp_user2 = user_factory('db2', name='tmp$7188_2', password='456')
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act1 = python_act('db1')
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act2 = python_act('db2')
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LOOP_COUNT = 10000
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CUSTOM_TPB = tpb(isolation = Isolation.READ_COMMITTED)
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RSS_MAX_DIFF = 1.003
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VMS_MAX_DIFF = 1.001
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PASSED_MSG = 'OK'
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@pytest.mark.version('>=4.0.2')
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def test_1(act1: Action, act2: Action, tmp_user1: User, tmp_user2: User, capsys):
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dt_list = []
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memo_rss_list = []
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memo_vms_list = []
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client_process = psutil.Process( os.getpid() )
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memo_rss_list.append(int(client_process.memory_info().rss / 1024))
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memo_vms_list.append(int(client_process.memory_info().vms / 1024))
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with act1.db.connect(user = tmp_user1.name, password = tmp_user1.password) as con1, \
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act2.db.connect(user = tmp_user2.name, password = tmp_user2.password) as con2:
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for i in range(LOOP_COUNT):
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dt = DistributedTransactionManager([con1, con2])
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dt.begin(tpb = CUSTOM_TPB)
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dt.commit()
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memo_rss_list.append(int(client_process.memory_info().rss / 1024))
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memo_vms_list.append(int(client_process.memory_info().vms / 1024))
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if memo_rss_list[1] / memo_rss_list[0] < RSS_MAX_DIFF and memo_vms_list[1] / memo_vms_list[0] < VMS_MAX_DIFF:
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print(PASSED_MSG)
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else:
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print('client_process.memory_info(): ratio of RSS and/or VMS values exceeds threshold.')
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print(f'{memo_rss_list=}, ratio: {memo_rss_list[1] / memo_rss_list[0]:.3f}, {RSS_MAX_DIFF=:.3f}')
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print(f'{memo_vms_list=}, ratio: {memo_vms_list[1] / memo_vms_list[0]:.3f}, {VMS_MAX_DIFF=:.3f}')
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act1.expected_stdout = PASSED_MSG
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act1.stdout = capsys.readouterr().out
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assert act1.clean_stdout == act1.clean_expected_stdout
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