-#!/usr/bin/python
+#!/usr/bin/python2.7
+# Note: this script is python2 and python 3 compatible.
#
# steadystate_tests.py
#
# Test option parsing and functonality for fio's steady state detection feature.
#
-# steadystate_tests.py ./fio file-for-read-testing file-for-write-testing
+# steadystate_tests.py --read file-for-read-testing --write file-for-write-testing ./fio
#
# REQUIREMENTS
# Python 2.6+
#
# KNOWN ISSUES
# only option parsing and read tests are carried out
-# the read test fails when ss_ramp > timeout because it tries to calculate the stopping criterion and finds that
-# it does not match what fio reports
+# On Windows this script works under Cygwin but not from cmd.exe
+# On Windows I encounter frequent fio problems generating JSON output (nothing to decode)
# min runtime:
# if ss attained: min runtime = ss_dur + ss_ramp
# if not attained: runtime = timeout
+from __future__ import absolute_import
+from __future__ import print_function
import os
+import sys
import json
-import tempfile
+import uuid
+import pprint
import argparse
import subprocess
from scipy import stats
+from six.moves import range
def parse_args():
parser = argparse.ArgumentParser()
parser.add_argument('fio',
- help='path to fio executable');
- parser.add_argument('read',
+ help='path to fio executable')
+ parser.add_argument('--read',
help='target for read testing')
- parser.add_argument('write',
+ parser.add_argument('--write',
help='target for write testing')
args = parser.parse_args()
data = data[measurement]
mean = sum(data) / len(data)
if slope:
- x = range(len(data))
+ x = list(range(len(data)))
m, intercept, r_value, p_value, std_err = stats.linregress(x,data)
m = abs(m)
if pct:
if __name__ == '__main__':
args = parse_args()
+ pp = pprint.PrettyPrinter(indent=4)
+
#
# test option parsing
#
- parsing = [ { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=iops:10", "--ss_ramp=5"],
+ parsing = [ { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=iops:10", "--ss_ramp=5"],
'output': "set steady state IOPS threshold to 10.000000" },
- { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=iops:10%", "--ss_ramp=5"],
+ { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=iops:10%", "--ss_ramp=5"],
'output': "set steady state threshold to 10.000000%" },
- { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=iops:.1%", "--ss_ramp=5"],
+ { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=iops:.1%", "--ss_ramp=5"],
'output': "set steady state threshold to 0.100000%" },
- { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=bw:10%", "--ss_ramp=5"],
+ { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=bw:10%", "--ss_ramp=5"],
'output': "set steady state threshold to 10.000000%" },
- { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=bw:.1%", "--ss_ramp=5"],
+ { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=bw:.1%", "--ss_ramp=5"],
'output': "set steady state threshold to 0.100000%" },
- { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=bw:12", "--ss_ramp=5"],
+ { 'args': ["--parse-only", "--debug=parse", "--ss_dur=10s", "--ss=bw:12", "--ss_ramp=5"],
'output': "set steady state BW threshold to 12" },
]
for test in parsing:
- output = subprocess.check_output([args.fio] + test['args']);
- if test['output'] in output:
- print "PASSED '{0}' found with arguments {1}".format(test['output'], test['args'])
+ output = subprocess.check_output([args.fio] + test['args'])
+ if test['output'] in output.decode():
+ print("PASSED '{0}' found with arguments {1}".format(test['output'], test['args']))
else:
- print "FAILED '{0}' NOT found with arguments {1}".format(test['output'], test['args'])
+ print("FAILED '{0}' NOT found with arguments {1}".format(test['output'], test['args']))
#
# test some read workloads
# if ss inactive
# check that runtime is what was specified
#
- reads = [ [ {'s': True, 'timeout': 100, 'numjobs': 1, 'ss_dur': 5, 'ss_ramp': 3, 'iops': True, 'slope': True, 'ss_limit': 0.1, 'pct': True},
- {'s': False, 'timeout': 20, 'numjobs': 2},
- {'s': True, 'timeout': 100, 'numjobs': 3, 'ss_dur': 10, 'ss_ramp': 5, 'iops': False, 'slope': True, 'ss_limit': 0.1, 'pct': True},
- {'s': True, 'timeout': 10, 'numjobs': 3, 'ss_dur': 10, 'ss_ramp': 500, 'iops': False, 'slope': True, 'ss_limit': 0.1, 'pct': True} ],
+ reads = [ {'s': True, 'timeout': 100, 'numjobs': 1, 'ss_dur': 5, 'ss_ramp': 3, 'iops': True, 'slope': True, 'ss_limit': 0.1, 'pct': True},
+ {'s': False, 'timeout': 20, 'numjobs': 2},
+ {'s': True, 'timeout': 100, 'numjobs': 3, 'ss_dur': 10, 'ss_ramp': 5, 'iops': False, 'slope': True, 'ss_limit': 0.1, 'pct': True},
+ {'s': True, 'timeout': 10, 'numjobs': 3, 'ss_dur': 10, 'ss_ramp': 500, 'iops': False, 'slope': True, 'ss_limit': 0.1, 'pct': True},
]
- accum = []
- suitenum = 0
- for suite in reads:
- jobnum = 0
- for job in suite:
- parameters = [ "--name=job{0}".format(jobnum),
- "--thread",
- "--filename={0}".format(args.read),
- "--rw=randrw", "--rwmixread=100", "--stonewall",
- "--group_reporting", "--numjobs={0}".format(job['numjobs']),
- "--time_based", "--runtime={0}".format(job['timeout']) ]
- if job['s']:
- if job['iops']:
- ss = 'iops'
- else:
- ss = 'bw'
- if job['slope']:
- ss += "_slope"
- ss += ":" + str(job['ss_limit'])
- if job['pct']:
- ss += '%'
- parameters.extend([ '--ss_dur={0}'.format(job['ss_dur']),
- '--ss={0}'.format(ss),
- '--ss_ramp={0}'.format(job['ss_ramp']) ])
- accum.extend(parameters)
- jobnum += 1
-
- tf = tempfile.NamedTemporaryFile(delete=False)
- tf.close()
- output = subprocess.check_output([args.fio,
- "--output-format=json",
- "--output={0}".format(tf.name)] + accum)
- with open(tf.name, 'r') as source:
+ if args.read == None:
+ if os.name == 'posix':
+ args.read = '/dev/zero'
+ extra = [ "--size=134217728" ] # 128 MiB
+ else:
+ print("ERROR: file for read testing must be specified on non-posix systems")
+ sys.exit(1)
+ else:
+ extra = []
+
+ jobnum = 0
+ for job in reads:
+
+ tf = uuid.uuid4().hex
+ parameters = [ "--name=job{0}".format(jobnum) ]
+ parameters.extend(extra)
+ parameters.extend([ "--thread",
+ "--output-format=json",
+ "--output={0}".format(tf),
+ "--filename={0}".format(args.read),
+ "--rw=randrw",
+ "--rwmixread=100",
+ "--stonewall",
+ "--group_reporting",
+ "--numjobs={0}".format(job['numjobs']),
+ "--time_based",
+ "--runtime={0}".format(job['timeout']) ])
+ if job['s']:
+ if job['iops']:
+ ss = 'iops'
+ else:
+ ss = 'bw'
+ if job['slope']:
+ ss += "_slope"
+ ss += ":" + str(job['ss_limit'])
+ if job['pct']:
+ ss += '%'
+ parameters.extend([ '--ss_dur={0}'.format(job['ss_dur']),
+ '--ss={0}'.format(ss),
+ '--ss_ramp={0}'.format(job['ss_ramp']) ])
+
+ output = subprocess.call([args.fio] + parameters)
+ with open(tf, 'r') as source:
jsondata = json.loads(source.read())
- os.remove(tf.name)
- jobnum = 0
- for job in jsondata['jobs']:
- line = "suite {0}, {1}".format(suitenum, job['job options']['name'])
- if suite[jobnum]['s']:
- if job['steadystate']['attained'] == 1:
+ os.remove(tf)
+
+ for jsonjob in jsondata['jobs']:
+ line = "job {0}".format(jsonjob['job options']['name'])
+ if job['s']:
+ if jsonjob['steadystate']['attained'] == 1:
# check runtime >= ss_dur + ss_ramp, check criterion, check criterion < limit
- mintime = (suite[jobnum]['ss_dur'] + suite[jobnum]['ss_ramp']) * 1000
- actual = job['read']['runtime']
+ mintime = (job['ss_dur'] + job['ss_ramp']) * 1000
+ actual = jsonjob['read']['runtime']
if mintime > actual:
- line = 'FAILED ' + line + ' ss attained, runtime {0} < ss_dur {1} + ss_ramp {2}'.format(actual, suite[jobnum]['ss_dur'], suite[jobnum]['ss_ramp'])
+ line = 'FAILED ' + line + ' ss attained, runtime {0} < ss_dur {1} + ss_ramp {2}'.format(actual, job['ss_dur'], job['ss_ramp'])
else:
- line = line + ' ss attained, runtime {0} > ss_dur {1} + ss_ramp {2},'.format(actual, suite[jobnum]['ss_dur'], suite[jobnum]['ss_ramp'])
- objsame, met, mean, target = check(data=job['steadystate']['data'],
- iops=suite[jobnum]['iops'],
- slope=suite[jobnum]['slope'],
- pct=suite[jobnum]['pct'],
- limit=suite[jobnum]['ss_limit'],
- dur=suite[jobnum]['ss_dur'],
- criterion=job['steadystate']['criterion'])
+ line = line + ' ss attained, runtime {0} > ss_dur {1} + ss_ramp {2},'.format(actual, job['ss_dur'], job['ss_ramp'])
+ objsame, met, mean, target = check(data=jsonjob['steadystate']['data'],
+ iops=job['iops'],
+ slope=job['slope'],
+ pct=job['pct'],
+ limit=job['ss_limit'],
+ dur=job['ss_dur'],
+ criterion=jsonjob['steadystate']['criterion'])
if not objsame:
- line = 'FAILED ' + line + ' fio criterion {0} != calculated criterion {1}, data: {2} '.format(job['steadystate']['criterion'], target, job['steadystate'])
+ line = 'FAILED ' + line + ' fio criterion {0} != calculated criterion {1} '.format(jsonjob['steadystate']['criterion'], target)
else:
if met:
- line = 'PASSED ' + line + ' target {0} < limit {1}, data {2}'.format(target, suite[jobnum]['ss_limit'], job['steadystate'])
+ line = 'PASSED ' + line + ' target {0} < limit {1}'.format(target, job['ss_limit'])
else:
- line = 'FAILED ' + line + ' target {0} < limit {1} but fio reports ss not attained, data: {2}'.format(target, suite[jobnum]['ss_limit'], job['steadystate'])
-
+ line = 'FAILED ' + line + ' target {0} < limit {1} but fio reports ss not attained '.format(target, job['ss_limit'])
else:
# check runtime, confirm criterion calculation, and confirm that criterion was not met
- expected = suite[jobnum]['timeout'] * 1000
- actual = job['read']['runtime']
+ expected = job['timeout'] * 1000
+ actual = jsonjob['read']['runtime']
if abs(expected - actual) > 10:
line = 'FAILED ' + line + ' ss not attained, expected runtime {0} != actual runtime {1}'.format(expected, actual)
else:
- line = line + ' ss not attained, runtime {0} != ss_dur {1} + ss_ramp {2},'.format(actual, suite[jobnum]['ss_dur'], suite[jobnum]['ss_ramp'])
- objsame, met, mean, target = check(data=job['steadystate']['data'],
- iops=suite[jobnum]['iops'],
- slope=suite[jobnum]['slope'],
- pct=suite[jobnum]['pct'],
- limit=suite[jobnum]['ss_limit'],
- dur=suite[jobnum]['ss_dur'],
- criterion=job['steadystate']['criterion'])
+ line = line + ' ss not attained, runtime {0} != ss_dur {1} + ss_ramp {2},'.format(actual, job['ss_dur'], job['ss_ramp'])
+ objsame, met, mean, target = check(data=jsonjob['steadystate']['data'],
+ iops=job['iops'],
+ slope=job['slope'],
+ pct=job['pct'],
+ limit=job['ss_limit'],
+ dur=job['ss_dur'],
+ criterion=jsonjob['steadystate']['criterion'])
if not objsame:
- if actual > (suite[jobnum]['ss_dur'] + suite[jobnum]['ss_ramp'])*1000:
- line = 'FAILED ' + line + ' fio criterion {0} != calculated criterion {1}, data: {2} '.format(job['steadystate']['criterion'], target, job['steadystate'])
+ if actual > (job['ss_dur'] + job['ss_ramp'])*1000:
+ line = 'FAILED ' + line + ' fio criterion {0} != calculated criterion {1} '.format(jsonjob['steadystate']['criterion'], target)
else:
- line = 'PASSED ' + line + ' fio criterion {0} == 0.0 since ss_dur + ss_ramp has not elapsed, data: {1} '.format(job['steadystate']['criterion'], job['steadystate'])
+ line = 'PASSED ' + line + ' fio criterion {0} == 0.0 since ss_dur + ss_ramp has not elapsed '.format(jsonjob['steadystate']['criterion'])
else:
if met:
- line = 'FAILED ' + line + ' target {0} < threshold {1} but fio reports ss not attained, data: {2}'.format(target, suite[jobnum]['ss_limit'], job['steadystate'])
+ line = 'FAILED ' + line + ' target {0} < threshold {1} but fio reports ss not attained '.format(target, job['ss_limit'])
else:
- line = 'PASSED ' + line + ' criterion {0} > threshold {1}, data {2}'.format(target, suite[jobnum]['ss_limit'], job['steadystate'])
+ line = 'PASSED ' + line + ' criterion {0} > threshold {1}'.format(target, job['ss_limit'])
else:
- expected = suite[jobnum]['timeout'] * 1000
- actual = job['read']['runtime']
+ expected = job['timeout'] * 1000
+ actual = jsonjob['read']['runtime']
if abs(expected - actual) < 10:
result = 'PASSED '
else:
result = 'FAILED '
line = result + line + ' no ss, expected runtime {0} ~= actual runtime {1}'.format(expected, actual)
- print line
- jobnum += 1
- suitenum += 1
+ print(line)
+ if 'steadystate' in jsonjob:
+ pp.pprint(jsonjob['steadystate'])
+ jobnum += 1
projects / fio.git / blobdiff