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# ############################################################################
# Copyright (c) 2017 Huawei Technologies Co.,Ltd and others.
#
# 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
# ############################################################################
from __future__ import print_function
from __future__ import absolute_import
import logging
import yardstick.ssh as ssh
from yardstick.benchmark.scenarios import base
LOG = logging.getLogger(__name__)
class AddMemoryLoad(base.Scenario):
"""Add memory load in server
"""
__scenario_type__ = "AddMemoryLoad"
def __init__(self, scenario_cfg, context_cfg):
self.scenario_cfg = scenario_cfg
self.context_cfg = context_cfg
self.options = scenario_cfg.get('options', {})
self.client = ssh.SSH.from_node(self.context_cfg['host'])
self.client.wait(timeout=600)
def run(self, result):
self._add_load()
def _add_load(self):
try:
memory_load = self.options['memory_load']
except KeyError:
LOG.error('memory_load parameter must be provided')
else:
if float(memory_load) == 0:
return
cmd = 'free | awk "/Mem/ {print $2}"'
code, stdout, stderr = self.client.execute(cmd)
total = int(stdout.split()[1])
used = int(stdout.split()[2])
remain_memory = total * float(memory_load) - used
if remain_memory > 0:
count = remain_memory / 1024 / 128
LOG.info('Add %s vm load', count)
if count != 0:
cmd = 'stress -t 10 -m {} --vm-keep'.format(count)
self.client.execute(cmd)
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