1 ##############################################################################
2 # Copyright (c) 2015 Ericsson AB and others.
4 # All rights reserved. This program and the accompanying materials
5 # are made available under the terms of the Apache License, Version 2.0
6 # which accompanies this distribution, and is available at
7 # http://www.apache.org/licenses/LICENSE-2.0
8 ##############################################################################
9 from __future__ import absolute_import
10 from __future__ import print_function
15 from oslo_serialization import jsonutils
17 import yardstick.ssh as ssh
18 from yardstick.benchmark.scenarios import base
20 LOG = logging.getLogger(__name__)
23 class Lmbench(base.Scenario):
24 """Execute lmbench memory read latency or memory bandwidth benchmark in a host
27 test_type - specifies whether to measure memory latency or bandwidth
32 Parameters for memory read latency benchmark
33 stride - number of locations in memory between starts of array elements
37 stop_size - maximum array size to test (minimum value is 0.000512)
42 Results are accurate to the ~2-5 nanosecond range.
44 Parameters for memory bandwidth benchmark
45 size - the amount of memory to test
49 benchmark - the name of the memory bandwidth benchmark test to execute.
50 Valid test names are rd, wr, rdwr, cp, frd, fwr, fcp, bzero, bcopy
54 warmup - the number of repetitons to perform before taking measurements
58 more info http://manpages.ubuntu.com/manpages/trusty/lmbench.8.html
60 __scenario_type__ = "Lmbench"
62 LATENCY_BENCHMARK_SCRIPT = "lmbench_latency_benchmark.bash"
63 BANDWIDTH_BENCHMARK_SCRIPT = "lmbench_bandwidth_benchmark.bash"
64 LATENCY_CACHE_SCRIPT = "lmbench_latency_for_cache.bash"
66 def __init__(self, scenario_cfg, context_cfg):
67 self.scenario_cfg = scenario_cfg
68 self.context_cfg = context_cfg
69 self.setup_done = False
73 self.bandwidth_target_script = pkg_resources.resource_filename(
74 "yardstick.benchmark.scenarios.compute",
75 Lmbench.BANDWIDTH_BENCHMARK_SCRIPT)
76 self.latency_target_script = pkg_resources.resource_filename(
77 "yardstick.benchmark.scenarios.compute",
78 Lmbench.LATENCY_BENCHMARK_SCRIPT)
79 self.latency_for_cache_script = pkg_resources.resource_filename(
80 "yardstick.benchmark.scenarios.compute",
81 Lmbench.LATENCY_CACHE_SCRIPT)
82 host = self.context_cfg["host"]
83 user = host.get("user", "ubuntu")
84 ssh_port = host.get("ssh_port", ssh.DEFAULT_PORT)
85 ip = host.get("ip", None)
86 key_filename = host.get('key_filename', "~/.ssh/id_rsa")
88 LOG.info("user:%s, host:%s", user, ip)
89 self.client = ssh.SSH(user, ip, key_filename=key_filename,
91 self.client.wait(timeout=600)
93 # copy scripts to host
94 self.client._put_file_shell(
95 self.latency_target_script, '~/lmbench_latency.sh')
96 self.client._put_file_shell(
97 self.bandwidth_target_script, '~/lmbench_bandwidth.sh')
98 self.client._put_file_shell(
99 self.latency_for_cache_script, '~/lmbench_latency_for_cache.sh')
100 self.setup_done = True
102 def run(self, result):
103 """execute the benchmark"""
105 if not self.setup_done:
108 options = self.scenario_cfg['options']
109 test_type = options.get('test_type', 'latency')
111 if test_type == 'latency':
112 stride = options.get('stride', 128)
113 stop_size = options.get('stop_size', 16.0)
114 cmd = "sudo bash lmbench_latency.sh %f %d" % (stop_size, stride)
115 elif test_type == 'bandwidth':
116 size = options.get('size', 128)
117 benchmark = options.get('benchmark', 'rd')
118 warmup_repetitions = options.get('warmup', 0)
119 cmd = "sudo bash lmbench_bandwidth.sh %d %s %d" % \
120 (size, benchmark, warmup_repetitions)
121 elif test_type == 'latency_for_cache':
122 repetition = options.get('repetition', 1)
123 warmup = options.get('warmup', 0)
124 cmd = "sudo bash lmbench_latency_for_cache.sh %d %d" % \
127 raise RuntimeError("No such test_type: %s for Lmbench scenario",
130 LOG.debug("Executing command: %s", cmd)
131 status, stdout, stderr = self.client.execute(cmd)
134 raise RuntimeError(stderr)
136 if test_type == 'latency':
138 {"latencies": jsonutils.loads(stdout)})
140 result.update(jsonutils.loads(stdout))
142 if "sla" in self.scenario_cfg:
144 if test_type == 'latency':
145 sla_max_latency = int(self.scenario_cfg['sla']['max_latency'])
146 for t_latency in result["latencies"]:
147 latency = t_latency['latency']
148 if latency > sla_max_latency:
149 sla_error += "latency %f > sla:max_latency(%f); " \
150 % (latency, sla_max_latency)
151 elif test_type == 'bandwidth':
152 sla_min_bw = int(self.scenario_cfg['sla']['min_bandwidth'])
153 bw = result["bandwidth(MBps)"]
155 sla_error += "bandwidth %f < " \
156 "sla:min_bandwidth(%f)" % (bw, sla_min_bw)
157 elif test_type == 'latency_for_cache':
158 sla_latency = float(self.scenario_cfg['sla']['max_latency'])
159 cache_latency = float(result['L1cache'])
160 if sla_latency < cache_latency:
161 sla_error += "latency %f > sla:max_latency(%f); " \
162 % (cache_latency, sla_latency)
163 assert sla_error == "", sla_error
167 """internal test function"""
168 key_filename = pkg_resources.resource_filename('yardstick.resources',
169 'files/yardstick_key')
172 'ip': '10.229.47.137',
174 'key_filename': key_filename
178 logger = logging.getLogger('yardstick')
179 logger.setLevel(logging.DEBUG)
182 'test_type': 'latency',
187 sla = {'max_latency': 35, 'action': 'monitor'}
188 args = {'options': options, 'sla': sla}
191 p = Lmbench(args, ctx)
196 if __name__ == '__main__':