78 lines
2.6 KiB
Python
78 lines
2.6 KiB
Python
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#!/usr/bin/env python3
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# SPDX-License-Identifier: GPL-2.0
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import subprocess
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import time
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import _damon_sysfs
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def main():
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# access two 10 MiB memory regions, 2 second per each
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sz_region = 10 * 1024 * 1024
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proc = subprocess.Popen(['./access_memory', '2', '%d' % sz_region, '2000'])
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goal = _damon_sysfs.DamosQuotaGoal(
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metric=_damon_sysfs.qgoal_metric_user_input, target_value=10000)
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kdamonds = _damon_sysfs.Kdamonds([_damon_sysfs.Kdamond(
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contexts=[_damon_sysfs.DamonCtx(
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ops='vaddr',
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targets=[_damon_sysfs.DamonTarget(pid=proc.pid)],
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schemes=[_damon_sysfs.Damos(
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action='stat',
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quota=_damon_sysfs.DamosQuota(
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goals=[goal], reset_interval_ms=100),
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)] # schemes
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)] # contexts
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)]) # kdamonds
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err = kdamonds.start()
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if err != None:
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print('kdamond start failed: %s' % err)
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exit(1)
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score_values_to_test = [0, 15000, 5000, 18000]
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while proc.poll() == None:
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if len(score_values_to_test) == 0:
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time.sleep(0.1)
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continue
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goal.current_value = score_values_to_test.pop(0)
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expect_increase = goal.current_value < goal.target_value
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err = kdamonds.kdamonds[0].commit_schemes_quota_goals()
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if err is not None:
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print('commit_schemes_quota_goals failed: %s' % err)
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exit(1)
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err = kdamonds.kdamonds[0].update_schemes_effective_quotas()
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if err is not None:
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print('before-update_schemes_effective_quotas failed: %s' % err)
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exit(1)
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last_effective_bytes = goal.effective_bytes
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time.sleep(0.5)
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err = kdamonds.kdamonds[0].update_schemes_effective_quotas()
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if err is not None:
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print('after-update_schemes_effective_quotas failed: %s' % err)
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exit(1)
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print('score: %s, effective quota: %d -> %d (%.3fx)' % (
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goal.current_value, last_effective_bytes, goal.effective_bytes,
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goal.effective_bytes / last_effective_bytes
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if last_effective_bytes != 0 else -1.0))
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if last_effective_bytes == goal.effective_bytes:
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print('efective bytes not changed: %d' % goal.effective_bytes)
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exit(1)
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increased = last_effective_bytes < goal.effective_bytes
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if expect_increase != increased:
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print('expectation of increase (%s) != increased (%s)' %
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(expect_increase, increased))
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exit(1)
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last_effective_bytes = goal.effective_bytes
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if __name__ == '__main__':
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main()
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