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ycsb.py
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ycsb.py
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"""
:Date: 2022-11-28
:Version: 0.1
:Authors: Patrick Erdelt
"""
from bexhoma import *
from dbmsbenchmarker import *
#import experiments
import logging
import urllib3
import logging
import argparse
import time
from timeit import default_timer
import datetime
urllib3.disable_warnings()
logging.basicConfig(level=logging.ERROR)
if __name__ == '__main__':
description = """Perform YCSB benchmarks in a Kubernetes cluster.
Number of rows and operations is SF*100,000.
Optionally monitoring is activated.
"""
# argparse
parser = argparse.ArgumentParser(description=description)
parser.add_argument('mode', help='import YCSB data or run YCSB queries', choices=['run', 'start', 'load'], default='run')
parser.add_argument('-aws', '--aws', help='fix components to node groups at AWS', action='store_true', default=False)
parser.add_argument('-dbms', help='DBMS to load the data', choices=['PostgreSQL', 'MonetDB', 'SingleStore', 'CockroachDB', 'MySQL', 'MariaDB', 'YugabyteDB', 'Kinetica'], default='PostgreSQL')
parser.add_argument('-workload', help='YCSB default workload', choices=['a', 'b', 'c', 'd', 'e', 'f'], default='a')
parser.add_argument('-db', '--debug', help='dump debug informations', action='store_true')
parser.add_argument('-cx', '--context', help='context of Kubernetes (for a multi cluster environment), default is current context', default=None)
parser.add_argument('-e', '--experiment', help='sets experiment code for continuing started experiment', default=None)
parser.add_argument('-d', '--detached', help='puts most of the experiment workflow inside the cluster', action='store_true')
parser.add_argument('-m', '--monitoring', help='activates monitoring for sut', action='store_true')
parser.add_argument('-mc', '--monitoring-cluster', help='activates monitoring for all nodes of cluster', action='store_true', default=False)
parser.add_argument('-ms', '--max-sut', help='maximum number of parallel DBMS configurations, default is no limit', default=None)
parser.add_argument('-dt', '--datatransfer', help='activates datatransfer', action='store_true', default=False)
parser.add_argument('-md', '--monitoring-delay', help='time to wait [s] before execution of the runs of a query', default=10)
parser.add_argument('-nr', '--num-run', help='number of runs per query', default=1)
parser.add_argument('-nc', '--num-config', help='number of runs per configuration', default=1)
parser.add_argument('-ne', '--num-query-executors', help='comma separated list of number of parallel clients', default="1")
parser.add_argument('-nl', '--num-loading', help='number of parallel loaders per configuration', default=1)
parser.add_argument('-nlp', '--num-loading-pods', help='total number of loaders per configuration', default=[1,8])
parser.add_argument('-sf', '--scaling-factor', help='scaling factor (SF) = number of rows in millions', default=1)
parser.add_argument('-sfo', '--scaling-factor-operations', help='scaling factor (SF) = number of operations in millions (=SF if not set)', default=None)
parser.add_argument('-su', '--scaling-users', help='scaling factor = number of total threads', default=64)
parser.add_argument('-sbs', '--scaling-batchsize', help='batch size', default="")
parser.add_argument('-ltf', '--list-target-factors', help='comma separated list of factors of 16384 ops as target - default range(1,9)', default="1,2,3,4,5,6,7,8")
parser.add_argument('-tb', '--target-base', help='ops as target, base for factors - default 16384 = 2**14', default="16384")
parser.add_argument('-t', '--timeout', help='timeout for a run of a query', default=180)
parser.add_argument('-rr', '--request-ram', help='request ram', default='16Gi')
parser.add_argument('-rc', '--request-cpu', help='request cpus', default='4')
parser.add_argument('-rct', '--request-cpu-type', help='request node having node label cpu=', default='')
parser.add_argument('-rg', '--request-gpu', help='request number of gpus', default=1)
parser.add_argument('-rgt', '--request-gpu-type', help='request node having node label gpu=', default='a100')
parser.add_argument('-rst', '--request-storage-type', help='request persistent storage of certain type', default=None, choices=[None, '', 'local-hdd', 'shared'])
parser.add_argument('-rss', '--request-storage-size', help='request persistent storage of certain size', default='10Gi')
parser.add_argument('-rnn', '--request-node-name', help='request a specific node', default=None)
parser.add_argument('-rnl', '--request-node-loading', help='request a specific node', default=None)
parser.add_argument('-rnb', '--request-node-benchmarking', help='request a specific node', default=None)
parser.add_argument('-tr', '--test-result', help='test if result fulfills some basic requirements', action='store_true', default=False)
# evaluate args
args = parser.parse_args()
if args.debug:
logging.basicConfig(level=logging.DEBUG)
#logging.basicConfig(level=logging.DEBUG)
if args.debug:
logger_bexhoma = logging.getLogger('bexhoma')
logger_bexhoma.setLevel(logging.DEBUG)
logger_loader = logging.getLogger('load_data_asynch')
logger_loader.setLevel(logging.DEBUG)
# set parameter
monitoring = args.monitoring
monitoring_cluster = args.monitoring_cluster
mode = str(args.mode)
SF = str(args.scaling_factor)
SFO = str(args.scaling_factor_operations)
if SFO is None:
SFO = SF
SU = int(args.scaling_users)
target_base = int(args.target_base)
list_target_factors = args.list_target_factors
if len(list_target_factors) > 0:
list_target_factors = list_target_factors.split(",")
list_target_factors = [int(x) for x in list_target_factors]
batchsize = args.scaling_batchsize
timeout = int(args.timeout)
numRun = int(args.num_run)
num_experiment_to_apply = int(args.num_config)
num_loading = int(args.num_loading)
#num_loading_pods = int(args.num_loading_pods)
num_loading_pods = args.num_loading_pods
if len(num_loading_pods) > 0:
num_loading_pods = num_loading_pods.split(",")
num_loading_pods = [int(x) for x in num_loading_pods]
#num_virtual_users = args.num_virtual_users
cpu = str(args.request_cpu)
memory = str(args.request_ram)
cpu_type = str(args.request_cpu_type)
gpu_type = str(args.request_gpu_type)
gpus = str(args.request_gpu)
request_storage_type = args.request_storage_type
request_storage_size = args.request_storage_size
request_node_name = args.request_node_name
request_node_loading = args.request_node_loading
request_node_benchmarking = args.request_node_benchmarking
datatransfer = args.datatransfer
test_result = args.test_result
code = args.experiment
# set cluster
aws = args.aws
if aws:
cluster = clusters.aws(context=args.context)
# scale up
node_sizes = {
'auxiliary': 1,
'sut-mid': 1,
'benchmarker': 1
}
#cluster.scale_nodegroups(node_sizes)
else:
cluster = clusters.kubernetes(context=args.context)
cluster_name = cluster.contextdata['clustername']
if args.max_sut is not None:
cluster.max_sut = int(args.max_sut)
# set experiment
if code is None:
code = cluster.code
experiment = experiments.ycsb(cluster=cluster, SF=SF, timeout=timeout, code=code, num_experiment_to_apply=num_experiment_to_apply)
experiment.prometheus_interval = "10s"
experiment.prometheus_timeout = "10s"
# remove running dbms
#experiment.clean()
if mode == 'run':
# we want all YCSB queries
#experiment.set_queries_full()
experiment.set_workload(
name = 'YCSB SF='+str(SF),
info = 'This experiment compares run time and resource consumption of YCSB queries.',
defaultParameters = {'SF': SF}
)
else:
# we want to profile the import
#experiment.set_queries_profiling()
experiment.set_workload(
name = 'YCSB Data Loading SF='+str(SF),
info = 'This imports YCSB data sets.',
defaultParameters = {'SF': SF}
)
if monitoring_cluster:
# monitor all nodes of cluster (for not missing any component)
cluster.start_monitoring_cluster()
#experiment.set_queryfile('queries-tpcds-profiling-tables.config')
# set resources for dbms
#experiment.connectionmanagement['timeout'] = 180
experiment.set_resources(
requests = {
'cpu': cpu,
'memory': memory,
'gpu': 0
},
limits = {
'cpu': 0,
'memory': 0
},
nodeSelector = {
'cpu': cpu_type,
'gpu': '',
#'kubernetes.io/hostname': 'cl-worker13'
})
if request_node_name is not None:
experiment.set_resources(
nodeSelector = {
'cpu': cpu_type,
'gpu': '',
'kubernetes.io/hostname': request_node_name
})
# persistent storage
#print(request_storage_type)
#if not request_storage_type is None:# and (request_storage_type == 'shared' or request_storage_type == 'local-hdd'):
experiment.set_storage(
storageClassName = request_storage_type,
storageSize = request_storage_size,#'100Gi',
keep = True,
storageConfiguration = 'mysql-bht'
)
# set node labes for components
"""
experiment.set_nodes(
#maintaining = 'auxiliary',
loading = 'loading',
sut = 'sut',
#benchmarking = 'benchmarker',
)
"""
cluster.start_dashboard()
if aws:
# set node labes for components
experiment.set_nodes(
sut = 'sut',
loading = 'sut',
monitoring = 'auxiliary',
benchmarking = 'auxiliary',
)
# note more infos about experiment in workload description
experiment.workload['info'] = experiment.workload['info']+" YCSB is performed using several threads and processes."
if len(args.dbms):
# import is limited to single DBMS
experiment.workload['info'] = experiment.workload['info']+" Benchmark is limited to DBMS {}.".format(args.dbms)
#if len(list_loading_split):
# # import uses several processes in pods
# experiment.workload['info'] = experiment.workload['info']+" Import is handled by {} processes.".format(num_loading_split)
# add configs
experiment.loading_active = True
experiment.jobtemplate_loading = "jobtemplate-loading-ycsb.yml"
#experiment.name_format = '{dbms}-{threads}-{pods}-{target}'
experiment.set_experiment(script='Schema')
ycsb_rows = int(SF)*1000000 # 1kb each, that is SF is size in GB
ycsb_operations = int(SFO)*1000000
# note more infos about experiment in workload description
experiment.workload['info'] = experiment.workload['info']+" YCSB data is loaded using several processes."
if len(args.dbms):
# import is limited to single DBMS
experiment.workload['info'] = experiment.workload['info']+" Benchmark is limited to DBMS {}.".format(args.dbms)
# fix loading
if not request_node_loading is None:
experiment.patch_loading(patch="""
spec:
template:
spec:
nodeSelector:
kubernetes.io/hostname: {node}
""".format(node=request_node_loading))
experiment.workload['info'] = experiment.workload['info']+" Loading is fixed to {}.".format(request_node_loading)
# fix benchmarking
if not request_node_benchmarking is None:
experiment.patch_benchmarking(patch="""
spec:
template:
spec:
nodeSelector:
kubernetes.io/hostname: {node}
""".format(node=request_node_benchmarking))
experiment.workload['info'] = experiment.workload['info']+" Benchmarking is fixed to {}.".format(request_node_benchmarking)
# add labels about the use case
experiment.set_additional_labels(
usecase="threads-split",
experiment_design="1-2",
ROWS=ycsb_rows,
OPERATIONS=ycsb_operations,
workload=args.workload,
)
# configure number of clients per config
list_clients = args.num_query_executors.split(",")
if len(list_clients) > 0:
list_clients = [int(x) for x in list_clients]
experiment.add_benchmark_list(list_clients)
for threads in [SU]:#[8]:#[64]:
for pods in num_loading_pods:#[1,2]:#[1,8]:#range(2,5):
#pods = 2**p
#for t in range(1, 15):#range(1, 2):#range(1, 15):
for t in list_target_factors:#range(1, 9):#range(1, 2):#range(1, 15):
target = target_base*t#4*4096*t
threads_per_pod = int(threads/pods)
ycsb_operations_per_pod = int(ycsb_operations/pods)
target_per_pod = int(target/pods)
if args.dbms == "PostgreSQL":
# PostgreSQL
#name_format = 'PostgreSQL-{}-{}-{}-{}'.format(cluster_name, pods, worker, target)
name_format = 'PostgreSQL-{threads}-{pods}-{target}'
config = configurations.ycsb(experiment=experiment, docker='PostgreSQL', configuration=name_format.format(threads=threads, pods=pods, target=target), alias='DBMS D')
config.set_loading_parameters(
PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
config.set_loading(parallel=pods, num_pods=pods)
#config.set_loading(parallel=num_loading, num_pods=num_loading_pods)
config.set_benchmarking_parameters(
#PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
elif args.dbms == "MySQL":
# MySQL
#name_format = 'PostgreSQL-{}-{}-{}-{}'.format(cluster_name, pods, worker, target)
name_format = 'MySQL-{threads}-{pods}-{target}'
config = configurations.ycsb(experiment=experiment, docker='MySQL', configuration=name_format.format(threads=threads, pods=pods, target=target), alias='DBMS D')
config.set_loading_parameters(
PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
config.set_loading(parallel=pods, num_pods=pods)
#config.set_loading(parallel=num_loading, num_pods=num_loading_pods)
config.set_benchmarking_parameters(
#PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
elif args.dbms == "MariaDB":
# MariaDB
#name_format = 'PostgreSQL-{}-{}-{}-{}'.format(cluster_name, pods, worker, target)
name_format = 'MariaDB-{threads}-{pods}-{target}'
config = configurations.ycsb(experiment=experiment, docker='MariaDB', configuration=name_format.format(threads=threads, pods=pods, target=target), alias='DBMS D')
config.set_loading_parameters(
PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
config.set_loading(parallel=pods, num_pods=pods)
#config.set_loading(parallel=num_loading, num_pods=num_loading_pods)
config.set_benchmarking_parameters(
#PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
elif args.dbms == "MonetDB":
# MonetDB
#name_format = 'PostgreSQL-{}-{}-{}-{}'.format(cluster_name, pods, worker, target)
name_format = 'MonetDB-{threads}-{pods}-{target}'
config = configurations.ycsb(experiment=experiment, docker='MonetDB', configuration=name_format.format(threads=threads, pods=pods, target=target), alias='DBMS D')
config.set_loading_parameters(
PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
config.set_loading(parallel=pods, num_pods=pods)
#config.set_loading(parallel=num_loading, num_pods=num_loading_pods)
config.set_benchmarking_parameters(
#PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
elif args.dbms == "SingleStore":
# SingleStore
#name_format = 'PostgreSQL-{}-{}-{}-{}'.format(cluster_name, pods, worker, target)
name_format = 'SingleStore-{threads}-{pods}-{target}'
config = configurations.ycsb(experiment=experiment, docker='SingleStore', configuration=name_format.format(threads=threads, pods=pods, target=target), alias='DBMS D')
config.set_loading_parameters(
PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
config.set_loading(parallel=pods, num_pods=pods)
#config.set_loading(parallel=num_loading, num_pods=num_loading_pods)
config.set_benchmarking_parameters(
#PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
elif args.dbms == "Kinetica":
# Kinetica
#name_format = 'PostgreSQL-{}-{}-{}-{}'.format(cluster_name, pods, worker, target)
name_format = 'Kinetica-{threads}-{pods}-{target}'
config = configurations.ycsb(experiment=experiment, docker='Kinetica', configuration=name_format.format(threads=threads, pods=pods, target=target), alias='DBMS D')
config.set_loading_parameters(
PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
#BEXHOMA_HOST = 'bexhoma-worker-0.kinetica-workers', # fixed for worker nodes
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
config.set_loading(parallel=pods, num_pods=pods)
#config.set_loading(parallel=num_loading, num_pods=num_loading_pods)
config.set_benchmarking_parameters(
#PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
#BEXHOMA_HOST = 'bexhoma-worker-0.kinetica-workers', # fixed for worker nodes
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
elif args.dbms == "YugabyteDB":
# YugabyteDB
#name_format = 'PostgreSQL-{}-{}-{}-{}'.format(cluster_name, pods, worker, target)
name_format = 'YugabyteDB-{threads}-{pods}-{target}'
config = configurations.ycsb(experiment=experiment, docker='YugabyteDB', configuration=name_format.format(threads=threads, pods=pods, target=target), alias='DBMS D')
config.set_loading_parameters(
PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
config.set_loading(parallel=pods, num_pods=pods)
#config.set_loading(parallel=num_loading, num_pods=num_loading_pods)
config.set_benchmarking_parameters(
#PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
cluster.max_sut = 1 # can only run 1 in same cluster because of fixed service
elif args.dbms == "CockroachDB":
# CockroachDB
num_worker = 3
num_worker_replicas = 1
#name_format = 'PostgreSQL-{}-{}-{}-{}'.format(cluster_name, pods, worker, target)
name_format = 'CockroachDB-{threads}-{pods}-{target}'
config = configurations.ycsb(experiment=experiment, docker='CockroachDB', configuration=name_format.format(threads=threads, pods=pods, target=target), alias='DBMS D', worker=num_worker)
config.set_loading_parameters(
PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
config.set_loading(parallel=pods, num_pods=pods)
#config.set_loading(parallel=num_loading, num_pods=num_loading_pods)
config.set_benchmarking_parameters(
#PARALLEL = str(pods),
SF = SF,
YCSB_THREADCOUNT = threads_per_pod,
YCSB_TARGET = target_per_pod,
YCSB_STATUS = 1,
BEXHOMA_SYNCH_LOAD = 1,
YCSB_WORKLOAD = args.workload,
ROWS = ycsb_rows,
OPERATIONS = ycsb_operations_per_pod,
YCSB_BATCHSIZE = batchsize,
)
config.set_ddl_parameters(num_replicas=str(num_worker_replicas))
config.add_benchmark_list([pods])
# wait for necessary nodegroups to have planned size
if aws:
#cluster.wait_for_nodegroups(node_sizes)
pass
if args.mode == 'start':
experiment.start_sut()
elif args.mode == 'load':
# start all DBMS
experiment.start_sut()
# configure number of clients per config = 0
list_clients = []
# total time of experiment
experiment.add_benchmark_list(list_clients)
start = default_timer()
start_datetime = str(datetime.datetime.now())
# run workflow
experiment.work_benchmark_list()
# total time of experiment
end = default_timer()
end_datetime = str(datetime.datetime.now())
duration_experiment = end - start
else:
# total time of experiment
start = default_timer()
start_datetime = str(datetime.datetime.now())
print("Experiment starts at {} ({})".format(start_datetime, start))
# run workflow
experiment.work_benchmark_list()
# total time of experiment
end = default_timer()
end_datetime = str(datetime.datetime.now())
duration_experiment = end - start
print("Experiment ends at {} ({}): {}s total".format(end_datetime, end, duration_experiment))
##################
experiment.evaluate_results()
experiment.stop_benchmarker()
experiment.stop_sut()
#experiment.zip() # OOM? exit code 137
if test_result:
test_result_code = experiment.test_results()
if test_result_code == 0:
print("Test successful!")
cluster.restart_dashboard()
#cluster.stop_dashboard()
#cluster.start_dashboard()
exit()