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##############################################################################
# Copyright (c) 2015 Huawei Technologies Co.,Ltd and other.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
import pkg_resources
import logging
import json
import yardstick.ssh as ssh
from yardstick.benchmark.scenarios import base
LOG = logging.getLogger(__name__)
LOG.setLevel(logging.DEBUG)
class Cyclictest(base.Scenario):
"""Execute cyclictest benchmark on guest vm
Parameters
affinity - run thread #N on processor #N, if possible
type: int
unit: na
default: 1
interval - base interval of thread
type: int
unit: us
default: 1000
loops - number of loops, 0 for endless
type: int
unit: na
default: 1000
priority - priority of highest prio thread
type: int
unit: na
default: 99
threads - number of threads
type: int
unit: na
default: 1
histogram - dump a latency histogram to stdout after the run
here set the max time to be tracked
type: int
unit: ms
default: 90
Read link below for more fio args description:
https://rt.wiki.kernel.org/index.php/Cyclictest
"""
__scenario_type__ = "Cyclictest"
TARGET_SCRIPT = "cyclictest_benchmark.bash"
def __init__(self, scenario_cfg, context_cfg):
self.scenario_cfg = scenario_cfg
self.context_cfg = context_cfg
self.setup_done = False
def setup(self):
'''scenario setup'''
self.target_script = pkg_resources.resource_filename(
"yardstick.benchmark.scenarios.compute",
Cyclictest.TARGET_SCRIPT)
host = self.context_cfg["host"]
user = host.get("user", "root")
ip = host.get("ip", None)
key_filename = host.get("key_filename", "~/.ssh/id_rsa")
LOG.debug("user:%s, host:%s", user, ip)
print "key_filename:" + key_filename
self.client = ssh.SSH(user, ip, key_filename=key_filename)
self.client.wait(timeout=600)
# copy script to host
self.client.run("cat > ~/cyclictest_benchmark.sh",
stdin=open(self.target_script, "rb"))
self.setup_done = True
def run(self, result):
"""execute the benchmark"""
default_args = "-m -n -q"
if not self.setup_done:
self.setup()
options = self.scenario_cfg["options"]
affinity = options.get("affinity", 1)
interval = options.get("interval", 1000)
priority = options.get("priority", 99)
loops = options.get("loops", 1000)
threads = options.get("threads", 1)
histogram = options.get("histogram", 90)
cmd_args = "-a %s -i %s -p %s -l %s -t %s -h %s %s" \
% (affinity, interval, priority, loops,
threads, histogram, default_args)
cmd = "sudo bash cyclictest_benchmark.sh %s" % (cmd_args)
LOG.debug("Executing command: %s", cmd)
status, stdout, stderr = self.client.execute(cmd)
if status:
raise RuntimeError(stderr)
result.update(json.loads(stdout))
if "sla" in self.scenario_cfg:
sla_error = ""
for t, latency in result.items():
if 'max_%s_latency' % t not in self.scenario_cfg['sla']:
continue
sla_latency = int(self.scenario_cfg['sla'][
'max_%s_latency' % t])
latency = int(latency)
if latency > sla_latency:
sla_error += "%s latency %d > sla:max_%s_latency(%d); " % \
(t, latency, t, sla_latency)
assert sla_error == "", sla_error
def _test():
'''internal test function'''
key_filename = pkg_resources.resource_filename("yardstick.resources",
"files/yardstick_key")
ctx = {
"host": {
"ip": "10.229.47.137",
"user": "root",
"key_filename": key_filename
}
}
logger = logging.getLogger("yardstick")
logger.setLevel(logging.DEBUG)
options = {
"affinity": 2,
"interval": 100,
"priority": 88,
"loops": 10000,
"threads": 2,
"histogram": 80
}
sla = {
"max_min_latency": 100,
"max_avg_latency": 500,
"max_max_latency": 1000,
}
args = {
"options": options,
"sla": sla
}
result = {}
cyclictest = Cyclictest(args, ctx)
cyclictest.run(result)
print result
if __name__ == '__main__':
_test()
|
