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 ##############################################################################
13 import yardstick.ssh as ssh
14 from yardstick.benchmark.scenarios import base
16 LOG = logging.getLogger(__name__)
19 class Lmbench(base.Scenario):
20 """Execute lmbench memory read latency or memory bandwidth benchmark in a host
23 test_type - specifies whether to measure memory latency or bandwidth
28 Parameters for memory read latency benchmark
29 stride - number of locations in memory between starts of array elements
33 stop_size - maximum array size to test (minimum value is 0.000512)
38 Results are accurate to the ~2-5 nanosecond range.
40 Parameters for memory bandwidth benchmark
41 size - the amount of memory to test
45 benchmark - the name of the memory bandwidth benchmark test to execute.
46 Valid test names are rd, wr, rdwr, cp, frd, fwr, fcp, bzero, bcopy
50 warmup - the number of repetitons to perform before taking measurements
54 more info http://manpages.ubuntu.com/manpages/trusty/lmbench.8.html
56 __scenario_type__ = "Lmbench"
58 LATENCY_BENCHMARK_SCRIPT = "lmbench_latency_benchmark.bash"
59 BANDWIDTH_BENCHMARK_SCRIPT = "lmbench_bandwidth_benchmark.bash"
60 LATENCY_CACHE_SCRIPT = "lmbench_latency_for_cache.bash"
62 def __init__(self, scenario_cfg, context_cfg):
63 self.scenario_cfg = scenario_cfg
64 self.context_cfg = context_cfg
65 self.setup_done = False
69 self.bandwidth_target_script = pkg_resources.resource_filename(
70 "yardstick.benchmark.scenarios.compute",
71 Lmbench.BANDWIDTH_BENCHMARK_SCRIPT)
72 self.latency_target_script = pkg_resources.resource_filename(
73 "yardstick.benchmark.scenarios.compute",
74 Lmbench.LATENCY_BENCHMARK_SCRIPT)
75 self.latency_for_cache_script = pkg_resources.resource_filename(
76 "yardstick.benchmark.scenarios.compute",
77 Lmbench.LATENCY_CACHE_SCRIPT)
78 host = self.context_cfg["host"]
79 user = host.get("user", "ubuntu")
80 ip = host.get("ip", None)
81 key_filename = host.get('key_filename', "~/.ssh/id_rsa")
83 LOG.info("user:%s, host:%s", user, ip)
84 self.client = ssh.SSH(user, ip, key_filename=key_filename)
85 self.client.wait(timeout=600)
87 # copy scripts to host
88 self.client.run("cat > ~/lmbench_latency.sh",
89 stdin=open(self.latency_target_script, 'rb'))
90 self.client.run("cat > ~/lmbench_bandwidth.sh",
91 stdin=open(self.bandwidth_target_script, 'rb'))
92 self.client.run("cat > ~/lmbench_latency_for_cache.sh",
93 stdin=open(self.latency_for_cache_script, 'rb'))
94 self.setup_done = True
96 def run(self, result):
97 """execute the benchmark"""
99 if not self.setup_done:
102 options = self.scenario_cfg['options']
103 test_type = options.get('test_type', 'latency')
105 if test_type == 'latency':
106 stride = options.get('stride', 128)
107 stop_size = options.get('stop_size', 16.0)
108 cmd = "sudo bash lmbench_latency.sh %f %d" % (stop_size, stride)
109 elif test_type == 'bandwidth':
110 size = options.get('size', 128)
111 benchmark = options.get('benchmark', 'rd')
112 warmup_repetitions = options.get('warmup', 0)
113 cmd = "sudo bash lmbench_bandwidth.sh %d %s %d" % \
114 (size, benchmark, warmup_repetitions)
115 elif test_type == 'latency_for_cache':
116 repetition = options.get('repetition', 1)
117 warmup = options.get('warmup', 0)
118 cmd = "sudo bash lmbench_latency_for_cache.sh %d %d" % \
121 raise RuntimeError("No such test_type: %s for Lmbench scenario",
124 LOG.debug("Executing command: %s", cmd)
125 status, stdout, stderr = self.client.execute(cmd)
128 raise RuntimeError(stderr)
130 if test_type == 'latency':
131 result.update({"latencies": json.loads(stdout)})
133 result.update(json.loads(stdout))
135 if "sla" in self.scenario_cfg:
137 if test_type == 'latency':
138 sla_max_latency = int(self.scenario_cfg['sla']['max_latency'])
139 for t_latency in result["latencies"]:
140 latency = t_latency['latency']
141 if latency > sla_max_latency:
142 sla_error += "latency %f > sla:max_latency(%f); " \
143 % (latency, sla_max_latency)
144 elif test_type == 'bandwidth':
145 sla_min_bw = int(self.scenario_cfg['sla']['min_bandwidth'])
146 bw = result["bandwidth(MBps)"]
148 sla_error += "bandwidth %f < " \
149 "sla:min_bandwidth(%f)" % (bw, sla_min_bw)
150 elif test_type == 'latency_for_cache':
151 sla_latency = float(self.scenario_cfg['sla']['max_latency'])
152 cache_latency = float(result['L1cache'])
153 if sla_latency < cache_latency:
154 sla_error += "latency %f > sla:max_latency(%f); " \
155 % (cache_latency, sla_latency)
156 assert sla_error == "", sla_error
160 """internal test function"""
161 key_filename = pkg_resources.resource_filename('yardstick.resources',
162 'files/yardstick_key')
165 'ip': '10.229.47.137',
167 'key_filename': key_filename
171 logger = logging.getLogger('yardstick')
172 logger.setLevel(logging.DEBUG)
175 'test_type': 'latency',
180 sla = {'max_latency': 35, 'action': 'monitor'}
181 args = {'options': options, 'sla': sla}
184 p = Lmbench(args, ctx)
188 if __name__ == '__main__':