41 lines
1.4 KiB
Python
41 lines
1.4 KiB
Python
# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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from autotest_lib.client.bin import test, utils
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from autotest_lib.client.common_lib import error
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from autotest_lib.client.cros import service_stopper
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class kernel_TPMStress(test.test):
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"TPM communication stress test"
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version = 1
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def initialize(self):
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self._services = service_stopper.ServiceStopper(['cryptohomed',
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'chapsd',
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'attestationd',
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'tpm_managerd',
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'tcsd', 'trunksd'])
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self._services.stop_services()
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def run_once(self):
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# On a Mario, running the test with 1000 iterations takes 89 seconds,
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# and with 2000 iterations 163 seconds, i.e. the incremental time for 1
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# iteration is 74ms.
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n_iterations = 3000
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try:
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for iteration in range(n_iterations):
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utils.system("tpmc getpf")
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except Exception:
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raise error.TestError(("TPM communication error at " +
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"iteration %d of %d") %
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(iteration, n_iterations))
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def cleanup(self):
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self._services.restore_services()
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