def clear_cache():
"""Dump all dirty data and clear file system cache
(including directory cache)..
"""
osutil.check_root_or_exit('No enough privilege to clear cache')
system = platform.system()
if system == 'Linux':
status = call('sync', shell=True)
if status:
print >> sys.stderr, 'clear_cache: error on do sync'
return -1
status = call('echo 3 > /proc/sys/vm/drop_caches', shell=True)
if status:
print >> sys.stderr, 'clear_cache: error on drop caches'
else:
print >> sys.stderr, \
'Error: clear_cache(): unsupported system: %s' % system
sys.exit(1)
def main():
"""Filebench tests
"""
parser = argparse.ArgumentParser()
parser.add_argument('-f', '--formats', metavar='FS,..',
default=FILE_SYSTEMS,
help='sets testing file systems (default: {}).'
.format(FILE_SYSTEMS))
parser.add_argument('-w', '--workloads', metavar='NAME,..',
default=WORKLOADS,
help='set workloads, separated by comma. (default: {})'
.format(','.join(WORKLOADS)))
parser.add_argument('-i', '--iteration', metavar='NUM', type=int,
default=1, help='set iteration, default: 1')
parser.add_argument('-s', '--iosize', metavar='NUM', type=int,
default=1024, help='set IOSIZE (default: 1024)')
parser.add_argument('-r', '--run', metavar='NUM', type=int,
default=60, help='set run time (default: 60)')
parser.add_argument('--no_profile', action='store_true', default=False,
help='disable running profiling tools')
parser.add_argument('-j', '--no-journal', action='store_true',
default=False, help='turn off journaling on ext4.')
parser.add_argument('--perf', default='perf',
help='set the location of "perf"')
parser.add_argument('-e', '--events', default='cycles', metavar='EVT,..',
help='set the events to monitor by perf '
'(default: cycles)')
parser.add_argument('-k', '--vmlinux', default=None, metavar='FILE',
help='set vmlinux pathname for perf (optional)')
parser.add_argument('-S', '--kallsyms', default=None, metavar='FILE',
help='set kallsyms pathname for perf (optional)')
parser.add_argument('-R', '--retry', type=int, metavar='NUM', default=5,
help='Retry hanging benchmark (default: %(default)d)')
subs = parser.add_subparsers()
parser_scale = subs.add_parser('scale', help='Test scalability by running'
' multiprocess on all CPUs.')
parser.add_argument('-p', '--nproc', metavar='nproc',
action=SplitCommaAction, default=range(4, 61, 4),
help='sets the number of processes to test.')
parser_scale.set_defaults(func=test_scalability)
# Options for sub-command 'cpuscale'
parser_cpuscale = subs.add_parser(
'cpuscale', help='Test CPU scale test with different numbers of '
'active CPUs.')
parser_cpuscale.add_argument(
'-c', '--cpus', metavar='cpus', action=SplitCommaAction,
default=range(4, 49, 4),
help='sets the number of activate CPUs to test.')
parser_cpuscale.add_argument(
'-p', '--process', type=int, metavar='NUM',
default=128, help='set the number of processes (default: %(default)d)')
parser_cpuscale.add_argument(
'-t', '--thread', type=int, metavar='NUM',
default=1, help='set the number of threads (default: %(default)d)')
parser_cpuscale.set_defaults(func=test_cpu_scale)
parser_numa = subs.add_parser('numa', help='Test NUMA architecture.')
parser_numa.add_argument('-n', '--disks', type=int, metavar='NUM',
default=1, help='set the number of disks to run.')
parser_numa.add_argument(
'-N', '--dirs', type=int, metavar='NUM', default=1,
help='set the number of directories in each disk.')
parser_numa.set_defaults(func=test_numa)
parser_multifs = subs.add_parser('multifs', help='Test multi-filesystem.')
parser_multifs.add_argument('--ndisks', metavar='NUM',
action=SplitCommaAction, default=range(1, 5),
help='sets the number of disks to run')
parser_multifs.set_defaults(func=test_multi_filesystem)
parser_run = subs.add_parser('run', help='Test run filebench directly.')
parser_run.add_argument('-n', '--disks', type=int, metavar='NUM',
default=4, help='set the number of disks to run.')
parser_run.add_argument('-N', '--dirs', type=int, metavar='NUM',
default=1,
help='set the number of directories in each disk.')
parser_run.add_argument('-p', '--process', type=int, metavar='NUM',
default=1, help='set the number of processes in one'
' filebench instance.')
parser_run.add_argument('-t', '--thread', type=int, metavar='NUM',
default=1, help='set the number of threads.')
parser_run.add_argument(
'-b', '--basedir', metavar='DIR', default='ramdisks',
help='set base dir to mount disks and run the test.')
parser_run.add_argument(
'-w', '--workload', metavar='STR', default='varmail',
help='set workload to run.')
parser_run.add_argument('-o', '--output', metavar='FILE', default=None,
help='set the output file.')
parser_run.add_argument(
'--timeout', metavar='SEC', type=int, default=600,
help="set the timeout of waiting process to finish, "
"default: %(default)d seconds.")
parser_run.add_argument('--affinity', action='store_true', default=False,
help='set CPU affinity for each group of threads')
parser_run.set_defaults(func=test_run)
args = parser.parse_args()
if 'func' not in args:
parser.print_help()
sys.exit(1)
global PERF
PERF = args.perf
osutil.check_root_or_exit()
return args.func(args)
