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lmbench: adding taskset support

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lmbench can now be run pinned to specific CPUs.
This commit is contained in:
Sergei Trofimov
2016-02-11 08:15:20 +00:00
parent 288aa764b3
commit 759f8db1bc
1 changed files with 51 additions and 23 deletions
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66
wlauto/workloads/lmbench/__init__.py
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@@ -29,42 +29,64 @@ class lmbench(Workload):
test_names = ['lat_mem_rd', 'bw_mem']
description = """
Run a subtest from lmbench, a suite of portable ANSI/C microbenchmarks for UNIX/POSIX.
Run a subtest from lmbench, a suite of portable ANSI/C microbenchmarks for
UNIX/POSIX.
In general, lmbench measures two key features: latency and bandwidth. This workload supports a subset
of lmbench tests. lat_mem_rd can be used to measure latencies to memory (including caches). bw_mem
can be used to measure bandwidth to/from memory over a range of operations.
In general, lmbench measures two key features: latency and bandwidth. This
workload supports a subset of lmbench tests. lat_mem_rd can be used to
measure latencies to memory (including caches). bw_mem can be used to
measure bandwidth to/from memory over a range of operations.
Further details, and source code are available from:
http://sourceforge.net/projects/lmbench/.
See lmbench/bin/README for license details.
"""
parameters = [
Parameter('test', default='lat_mem_rd', allowed_values=test_names,
description="Specifies an lmbench test to run."),
description='''
Specifies an lmbench test to run.
'''),
Parameter('stride', kind=list_or_integer, default=[128],
description='Stride for lat_mem_rd test. Workload will iterate over one or more integer values.'),
Parameter('thrash', kind=bool, default=True, description='Sets -t flag for lat_mem_rd_test'),
description='''
Stride for lat_mem_rd test. Workload will iterate over one or
more integer values.
'''),
Parameter('thrash', kind=bool, default=True,
description='Sets -t flag for lat_mem_rd_test'),
Parameter('size', kind=list_or_string, default="4m",
description='Data set size for lat_mem_rd bw_mem tests.'),
Parameter('mem_category', kind=list_or_string,
default=('rd', 'wr', 'cp', 'frd', 'fwr', 'fcp', 'bzero', 'bcopy'),
description='List of memory catetories for bw_mem test.'),
Parameter('parallelism', kind=int, default=None, description='Parallelism flag for tests that accept it.'),
Parameter('warmup', kind=int, default=None, description='Warmup flag for tests that accept it.'),
Parameter('repetitions', kind=int, default=None, description='Repetitions flag for tests that accept it.'),
Parameter('parallelism', kind=int, default=None,
description='Parallelism flag for tests that accept it.'),
Parameter('warmup', kind=int, default=None,
description='Warmup flag for tests that accept it.'),
Parameter('repetitions', kind=int, default=None,
description='Repetitions flag for tests that accept it.'),
Parameter('force_abi', kind=str, default=None,
description='Override device abi with this value. Can be used to force arm32 on 64-bit devices.'),
description='''
Override device abi with this value. Can be used to force
arm32 on 64-bit devices.
'''),
Parameter('run_timeout', kind=int, default=900,
description="""
Timeout for execution of the test.
"""),
Parameter('times', kind=int, default=1, constraint=lambda x: x > 0,
description="""
Specifies the number of times the benchmark will be run in a "tight loop",
i.e. without performaing setup/teardown inbetween. This parameter is distinct from
"repetitions", as the latter takes place within the benchmark and produces a single result.
Specifies the number of times the benchmark will be run in a
"tight loop", i.e. without performaing setup/teardown
inbetween. This parameter is distinct from "repetitions", as
the latter takes place within the benchmark and produces a
single result.
"""),
Parameter('taskset_mask', kind=int,
description="""
Specifies the CPU mask the benchmark process will be pinned to.
"""),
]
@@ -124,11 +146,17 @@ class lmbench(Workload):
self.commands.append(command + what)
def _setup_common(self):
command = self.device_exe + " "
parts = []
if self.taskset_mask:
parts.append('{} taskset 0x{:x} {}'.format(self.device.busybox,
self.taskset_mask,
self.device_exe))
else:
parts.append(self.device_exe)
if self.parallelism is not None:
command = command + '-P {} '.format(self.parallelism)
parts.append('-P {}'.format(self.parallelism))
if self.warmup is not None:
command = command + '-W {} '.format(self.warmup)
parts.append('-W {}'.format(self.warmup))
if self.repetitions is not None:
command = command + '-N {} '.format(self.repetitions)
return command
parts.append('-N {}'.format(self.repetitions))
return ' '.join(parts)