def prepare_disks(mntdir, ndisks, ndirs, **kwargs):
"""Prepare disks
"""
fs = kwargs.get('fs', 'ext4')
no_journal = kwargs.get('no_journal', False)
# mount options.
options = ''
if fs == 'ext4':
options = 'noatime,nodiratime'
print('Preparing directories...{}'.format(mntdir))
if not os.path.exists(mntdir):
os.makedirs(mntdir)
osutil.umount_all(mntdir)
for nram in range(ndisks):
disk_path = '/dev/ram{}'.format(nram)
mntpnt = os.path.join(mntdir, 'ram{}'.format(nram))
if not os.path.exists(mntpnt):
os.makedirs(mntpnt)
osutil.mount(disk_path,
os.path.join(mntdir, 'ram{}'.format(nram)),
format=fs, no_journal=no_journal, options=options)
for dir_num in range(ndirs):
dirpath = os.path.join(mntdir, 'ram{}'.format(nram),
'test{}'.format(dir_num))
os.makedirs(dirpath)
def run_filebench(workload, **kwargs):
"""Run filebench.
"""
ndisks = kwargs.get('ndisks', 4)
ndirs = kwargs.get('ndirs', 1)
basedir = kwargs.get('basedir', 'ramdisks')
cpus = kwargs.get('cpus', '')
nprocs = kwargs.get('nprocs', 1)
nthreads = kwargs.get('nthreads', 1)
output = kwargs.get('output', 'filebench')
no_profile = kwargs.get('no_profile', False)
affinity = kwargs.get('affinity', False)
if cpus:
set_cpus.set_cpus(cpus)
lockstat = None
procstat = None
perf = None
if not no_profile:
lockstat = mfsbase.LockstatProfiler()
procstat = mfsbase.ProcStatProfiler()
perf = mfsbase.PerfProfiler(perf=PERF, **kwargs)
else:
lockstat = mfsbase.NonProfiler()
procstat = mfsbase.NonProfiler()
perf = mfsbase.NonProfiler()
lockstat.start()
procstat.start()
result_file = output + '_results.txt'
cmd = '{} run -w {} --disks {} --dirs {} -b {} -p {} -t {} -o {}' \
.format(__file__, workload, ndisks, ndirs, basedir, nprocs, nthreads,
result_file)
if affinity:
cmd += ' --affinity'
print(cmd)
perf.start(cmd)
procstat.stop()
lockstat.stop()
# Move PerfProfile.stop() to the last because it generates hunders of MBs
# logs, which has significant impact to procstat and lockstat accuracy.
perf.stop()
if cpus:
set_cpus.reset()
procstat.dump(output + '_cpustat.txt')
lockstat.dump(output + '_lockstat.txt')
perf.dump(output + '_perf.txt')
osutil.umount_all('ramdisks')
return True
