# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
-import pkg_resources
+from __future__ import absolute_import
+from __future__ import print_function
+
import logging
-import json
+
+import pkg_resources
+from oslo_serialization import jsonutils
import yardstick.ssh as ssh
+from yardstick.common import utils
from yardstick.benchmark.scenarios import base
LOG = logging.getLogger(__name__)
class Lmbench(base.Scenario):
- """Execute lmbench memory read latency benchmark in a host
+ """Execute lmbench memory read latency or memory bandwidth benchmark in a host
Parameters
+ test_type - specifies whether to measure memory latency or bandwidth
+ type: string
+ unit: na
+ default: "latency"
+
+ Parameters for memory read latency benchmark
stride - number of locations in memory between starts of array elements
type: int
unit: bytes
default: 128
stop_size - maximum array size to test (minimum value is 0.000512)
- type: int
+ type: float
unit: megabytes
- default: 16
+ default: 16.0
+
+ Results are accurate to the ~2-5 nanosecond range.
- Results are accurate to the ~2-5 nanosecond range.
+ Parameters for memory bandwidth benchmark
+ size - the amount of memory to test
+ type: int
+ unit: kilobyte
+ default: 128
+ benchmark - the name of the memory bandwidth benchmark test to execute.
+ Valid test names are rd, wr, rdwr, cp, frd, fwr, fcp, bzero, bcopy
+ type: string
+ unit: na
+ default: "rd"
+ warmup - the number of repetitons to perform before taking measurements
+ type: int
+ unit: na
+ default: 0
+ more info http://manpages.ubuntu.com/manpages/trusty/lmbench.8.html
"""
__scenario_type__ = "Lmbench"
- TARGET_SCRIPT = "lmbench_benchmark.bash"
+ LATENCY_BENCHMARK_SCRIPT = "lmbench_latency_benchmark.bash"
+ BANDWIDTH_BENCHMARK_SCRIPT = "lmbench_bandwidth_benchmark.bash"
+ LATENCY_CACHE_SCRIPT = "lmbench_latency_for_cache.bash"
def __init__(self, scenario_cfg, context_cfg):
self.scenario_cfg = scenario_cfg
def setup(self):
"""scenario setup"""
- self.target_script = pkg_resources.resource_filename(
+ self.bandwidth_target_script = pkg_resources.resource_filename(
+ "yardstick.benchmark.scenarios.compute",
+ Lmbench.BANDWIDTH_BENCHMARK_SCRIPT)
+ self.latency_target_script = pkg_resources.resource_filename(
"yardstick.benchmark.scenarios.compute",
- Lmbench.TARGET_SCRIPT)
+ Lmbench.LATENCY_BENCHMARK_SCRIPT)
+ self.latency_for_cache_script = pkg_resources.resource_filename(
+ "yardstick.benchmark.scenarios.compute",
+ Lmbench.LATENCY_CACHE_SCRIPT)
host = self.context_cfg["host"]
- user = host.get("user", "ubuntu")
- ip = host.get("ip", None)
- key_filename = host.get('key_filename', "~/.ssh/id_rsa")
- LOG.info("user:%s, host:%s", user, ip)
- self.client = ssh.SSH(user, ip, key_filename=key_filename)
+ self.client = ssh.SSH.from_node(host, defaults={"user": "ubuntu"})
self.client.wait(timeout=600)
- # copy script to host
- self.client.run("cat > ~/lmbench.sh",
- stdin=open(self.target_script, 'rb'))
-
+ # copy scripts to host
+ self.client._put_file_shell(
+ self.latency_target_script, '~/lmbench_latency.sh')
+ self.client._put_file_shell(
+ self.bandwidth_target_script, '~/lmbench_bandwidth.sh')
+ self.client._put_file_shell(
+ self.latency_for_cache_script, '~/lmbench_latency_for_cache.sh')
self.setup_done = True
def run(self, result):
self.setup()
options = self.scenario_cfg['options']
- stride = options.get('stride', 128)
- stop_size = options.get('stop_size', 16)
+ test_type = options.get('test_type', 'latency')
+
+ if test_type == 'latency':
+ stride = options.get('stride', 128)
+ stop_size = options.get('stop_size', 16.0)
+ cmd = "sudo bash lmbench_latency.sh %f %d" % (stop_size, stride)
+ elif test_type == 'bandwidth':
+ size = options.get('size', 128)
+ benchmark = options.get('benchmark', 'rd')
+ warmup_repetitions = options.get('warmup', 0)
+ cmd = "sudo bash lmbench_bandwidth.sh %d %s %d" % \
+ (size, benchmark, warmup_repetitions)
+ elif test_type == 'latency_for_cache':
+ repetition = options.get('repetition', 1)
+ warmup = options.get('warmup', 0)
+ cmd = "sudo bash lmbench_latency_for_cache.sh %d %d" % \
+ (repetition, warmup)
+ else:
+ raise RuntimeError("No such test_type: %s for Lmbench scenario"
+ % test_type)
- cmd = "sudo bash lmbench.sh %d %d" % (stop_size, stride)
LOG.debug("Executing command: %s", cmd)
status, stdout, stderr = self.client.execute(cmd)
if status:
raise RuntimeError(stderr)
- result.update({"latencies": json.loads(stdout)})
+ lmbench_result = {}
+ if test_type == 'latency':
+ lmbench_result.update(
+ {"latencies": jsonutils.loads(stdout)})
+ else:
+ lmbench_result.update(jsonutils.loads(stdout))
+ result.update(utils.flatten_dict_key(lmbench_result))
+
if "sla" in self.scenario_cfg:
sla_error = ""
- sla_max_latency = int(self.scenario_cfg['sla']['max_latency'])
- for t_latency in result:
- latency = t_latency['latency']
- if latency > sla_max_latency:
+ if test_type == 'latency':
+ sla_max_latency = int(self.scenario_cfg['sla']['max_latency'])
+ for t_latency in lmbench_result["latencies"]:
+ latency = t_latency['latency']
+ if latency > sla_max_latency:
+ sla_error += "latency %f > sla:max_latency(%f); " \
+ % (latency, sla_max_latency)
+ elif test_type == 'bandwidth':
+ sla_min_bw = int(self.scenario_cfg['sla']['min_bandwidth'])
+ bw = lmbench_result["bandwidth(MBps)"]
+ if bw < sla_min_bw:
+ sla_error += "bandwidth %f < " \
+ "sla:min_bandwidth(%f)" % (bw, sla_min_bw)
+ elif test_type == 'latency_for_cache':
+ sla_latency = float(self.scenario_cfg['sla']['max_latency'])
+ cache_latency = float(lmbench_result['L1cache'])
+ if sla_latency < cache_latency:
sla_error += "latency %f > sla:max_latency(%f); " \
- % (latency, sla_max_latency)
- assert sla_error == "", sla_error
+ % (cache_latency, sla_latency)
+ self.verify_SLA(sla_error == "", sla_error)
def _test():
logger = logging.getLogger('yardstick')
logger.setLevel(logging.DEBUG)
- options = {'stride': 128, 'stop_size': 16}
- args = {'options': options}
+ options = {
+ 'test_type': 'latency',
+ 'stride': 128,
+ 'stop_size': 16
+ }
+
+ sla = {'max_latency': 35, 'action': 'monitor'}
+ args = {'options': options, 'sla': sla}
result = {}
p = Lmbench(args, ctx)
p.run(result)
- print result
+ print(result)
+
if __name__ == '__main__':
_test()
Code Review / yardstick.git / blobdiff