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ftests: Add a test for the memory abstraction layer
Add a test for the memory abstraction layer abstractions. Currently only supports: memory.max <-> memory.limit_in_bytes memory.high <-> memory.soft_limit_in_bytes ----------------------------------------------------------------- Test Results: Run Date: Apr 14 14:52:47 Passed: 1 test(s) Skipped: 0 test(s) Failed: 0 test(s) ----------------------------------------------------------------- Timing Results: Test Time (sec) -------------------------------------------- setup 0.00 093-cgxget-memory_settings.py 3.34 teardown 0.00 -------------------------------------------- Total Run Time 3.34 [Kamalesh removed the unused Exceptions variable (lint warning)] Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
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‎tests/ftests/093-cgxget-memory_settings.py‎

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#!/usr/bin/env python3
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# SPDX-License-Identifier: LGPL-2.1-only
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#
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# cgxget functionality test - various cpuset settings
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#
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# Copyright (c) 2021-2025 Oracle and/or its affiliates.
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# Author: Tom Hromatka <tom.hromatka@oracle.com>
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#
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from cgroup import Cgroup, CgroupVersion
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from run import RunError
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import consts
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import ftests
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import sys
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import os
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CONTROLLER = 'memory'
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CGNAME = '093cgxget'
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CGRP_VER_V1 = CgroupVersion.CGROUP_V1
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CGRP_VER_V2 = CgroupVersion.CGROUP_V2
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TABLE = [
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# writesetting, writeval, writever, readsetting, readval, readver
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# memory.limit_in_bytes -> memory.max
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['memory.limit_in_bytes', '0', CGRP_VER_V1,
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'memory.limit_in_bytes', '0', CGRP_VER_V1],
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['memory.limit_in_bytes', '0', CGRP_VER_V1,
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'memory.max', '0', CGRP_VER_V2],
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['memory.limit_in_bytes', '4096000', CGRP_VER_V1,
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'memory.limit_in_bytes', '4096000', CGRP_VER_V1],
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['memory.limit_in_bytes', '8192000', CGRP_VER_V1,
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'memory.max', '8192000', CGRP_VER_V2],
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['memory.limit_in_bytes', '9223372036854771712', CGRP_VER_V1,
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'memory.limit_in_bytes', '9223372036854771712', CGRP_VER_V1],
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['memory.limit_in_bytes', '9223372036854771712', CGRP_VER_V1,
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'memory.max', 'max', CGRP_VER_V2],
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['memory.limit_in_bytes', '9223372036860000000', CGRP_VER_V1,
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'memory.limit_in_bytes', '9223372036854771712', CGRP_VER_V1],
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['memory.limit_in_bytes', '9223372036860000000', CGRP_VER_V1,
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'memory.max', 'max', CGRP_VER_V2],
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['memory.limit_in_bytes', '-1', CGRP_VER_V1,
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'memory.limit_in_bytes', '9223372036854771712', CGRP_VER_V1],
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['memory.limit_in_bytes', '-1', CGRP_VER_V1,
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'memory.max', 'max', CGRP_VER_V2],
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# memory.soft_limit_in_bytes -> memory.high
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['memory.soft_limit_in_bytes', '0', CGRP_VER_V1,
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'memory.soft_limit_in_bytes', '0', CGRP_VER_V1],
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['memory.soft_limit_in_bytes', '0', CGRP_VER_V1,
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'memory.high', '0', CGRP_VER_V2],
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['memory.soft_limit_in_bytes', '409600', CGRP_VER_V1,
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'memory.soft_limit_in_bytes', '409600', CGRP_VER_V1],
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['memory.soft_limit_in_bytes', '819200', CGRP_VER_V1,
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'memory.high', '819200', CGRP_VER_V2],
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['memory.soft_limit_in_bytes', '9223372036854771712', CGRP_VER_V1,
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'memory.soft_limit_in_bytes', '9223372036854771712', CGRP_VER_V1],
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['memory.soft_limit_in_bytes', '9223372036854771712', CGRP_VER_V1,
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'memory.high', 'max', CGRP_VER_V2],
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['memory.soft_limit_in_bytes', '9223372036860000000', CGRP_VER_V1,
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'memory.soft_limit_in_bytes', '9223372036854771712', CGRP_VER_V1],
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['memory.soft_limit_in_bytes', '9223372036860000000', CGRP_VER_V1,
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'memory.high', 'max', CGRP_VER_V2],
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['memory.soft_limit_in_bytes', '-1', CGRP_VER_V1,
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'memory.soft_limit_in_bytes', '9223372036854771712', CGRP_VER_V1],
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['memory.soft_limit_in_bytes', '-1', CGRP_VER_V1,
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'memory.high', 'max', CGRP_VER_V2],
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# memory.max -> memory.limit_in_bytes
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['memory.max', '0', CGRP_VER_V2,
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'memory.max', '0', CGRP_VER_V2],
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['memory.max', '0', CGRP_VER_V2,
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'memory.limit_in_bytes', '0', CGRP_VER_V1],
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['memory.max', '40960', CGRP_VER_V2,
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'memory.max', '40960', CGRP_VER_V2],
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['memory.max', '81920', CGRP_VER_V2,
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'memory.limit_in_bytes', '81920', CGRP_VER_V1],
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['memory.max', 'max', CGRP_VER_V2,
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'memory.max', 'max', CGRP_VER_V2],
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['memory.max', 'max', CGRP_VER_V2,
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'memory.limit_in_bytes', '9223372036854771712', CGRP_VER_V1],
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# memory.high -> memory.soft_limit_in_bytes
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['memory.high', '0', CGRP_VER_V2,
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'memory.high', '0', CGRP_VER_V2],
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['memory.high', '0', CGRP_VER_V2,
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'memory.soft_limit_in_bytes', '0', CGRP_VER_V1],
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['memory.high', '4096', CGRP_VER_V2,
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'memory.high', '4096', CGRP_VER_V2],
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['memory.high', '8192', CGRP_VER_V2,
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'memory.soft_limit_in_bytes', '8192', CGRP_VER_V1],
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['memory.high', 'max', CGRP_VER_V2,
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'memory.high', 'max', CGRP_VER_V2],
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['memory.high', 'max', CGRP_VER_V2,
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'memory.soft_limit_in_bytes', '9223372036854771712', CGRP_VER_V1],
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]
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def prereqs(config):
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result = consts.TEST_PASSED
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cause = None
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return result, cause
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def setup(config):
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Cgroup.create(config, CONTROLLER, CGNAME)
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def invalid_values_test(config):
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result = consts.TEST_PASSED
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cause = None
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try:
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Cgroup.xset(config, cgname=CGNAME, setting='memory.limit_in_bytes',
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value='-10', version=CGRP_VER_V1)
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except RunError:
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# we passed in an invalid value. this should fail
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pass
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else:
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result = consts.TEST_FAILED
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cause = 'cgxset unexpectedly succeeded'
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try:
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Cgroup.xset(config, cgname=CGNAME, setting='memory.max',
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value='-10', version=CGRP_VER_V2)
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except RunError:
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# we passed in an invalid value. this should fail
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pass
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else:
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result = consts.TEST_FAILED
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cause = 'cgxset unexpectedly succeeded'
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return result, cause
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def test(config):
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result = consts.TEST_PASSED
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cause = None
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result, cause = invalid_values_test(config)
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if result != consts.TEST_PASSED:
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return result, cause
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for entry in TABLE:
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Cgroup.xset(config, cgname=CGNAME, setting=entry[0],
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value=entry[1], version=entry[2])
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out = Cgroup.xget(config, cgname=CGNAME, setting=entry[3],
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version=entry[5], values_only=True,
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print_headers=False)
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if out != entry[4]:
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result = consts.TEST_FAILED
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cause = (
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'After setting {}={}, expected {}={}, but received '
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'{}={}'
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''.format(entry[0], entry[1], entry[3], entry[4],
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entry[3], out)
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)
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return result, cause
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return result, cause
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def teardown(config):
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Cgroup.delete(config, CONTROLLER, CGNAME)
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def main(config):
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[result, cause] = prereqs(config)
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if result != consts.TEST_PASSED:
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return [result, cause]
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setup(config)
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[result, cause] = test(config)
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teardown(config)
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return [result, cause]
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if __name__ == '__main__':
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config = ftests.parse_args()
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# this test was invoked directly. run only it
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config.args.num = int(os.path.basename(__file__).split('-')[0])
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sys.exit(ftests.main(config))
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# vim: set et ts=4 sw=4:

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