--- /dev/null
+#!/usr/bin/python
+#
+# 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
+#
+# REQUIREMENTS
+# Python 2.6+
+# SciPy
+#
+# 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
+# min runtime:
+# if ss attained: min runtime = ss_dur + ss_ramp
+# if not attained: runtime = timeout
+
+import os
+import json
+import tempfile
+import argparse
+import subprocess
+from scipy import stats
+
+def parse_args():
+ parser = argparse.ArgumentParser()
+ parser.add_argument('fio',
+ help='path to fio executable');
+ parser.add_argument('read',
+ help='target for read testing')
+ parser.add_argument('write',
+ help='target for write testing')
+ args = parser.parse_args()
+
+ return args
+
+
+def check(data, iops, slope, pct, limit, dur, criterion):
+ mean = sum(data) / len(data)
+ if slope:
+ x = range(len(data))
+ m, intercept, r_value, p_value, std_err = stats.linregress(x,data)
+ m = abs(m)
+ if pct:
+ target = m / mean * 100
+ else:
+ target = m
+ else:
+ maxdev = 0
+ for x in data:
+ maxdev = max(abs(mean-x), maxdev)
+ if pct:
+ target = maxdev / mean * 100
+ else:
+ target = maxdev
+
+ return (abs(target - criterion) / criterion < 0.001), target < limit, mean, target
+
+
+if __name__ == '__main__':
+ args = parse_args()
+
+#
+# test option parsing
+#
+ 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"],
+ 'output': "set steady state threshold to 10.000000%" },
+ { '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"],
+ 'output': "set steady state threshold to 10.000000%" },
+ { '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"],
+ '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'])
+ else:
+ print "FAILED '{0}' NOT found with arguments {1}".format(test['output'], test['args'])
+
+#
+# test some read workloads
+#
+# if ss active and attained,
+# check that runtime is less than job time
+# check criteria
+# how to check ramp time?
+#
+# 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} ],
+ ]
+
+ 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:
+ 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:
+ # 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']
+ 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'])
+ 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'])
+ if not objsame:
+ line = 'FAILED ' + line + ' fio criterion {0} != calculated criterion {1}, data: {2} '.format(job['steadystate']['criterion'], target, job['steadystate']['data'])
+ else:
+ if met:
+ line = 'PASSED ' + line + ' target {0} < limit {1}, data {2}'.format(target, suite[jobnum]['ss_limit'], job['steadystate']['data'])
+ else:
+ line = 'FAILED ' + line + ' target {0} < limit {1} but fio reports ss not attained, data: {2}'.format(target, suite[jobnum]['ss_limit'], job['steadystate']['data'])
+
+ else:
+ # check runtime, confirm criterion calculation, and confirm that criterion was not met
+ expected = suite[jobnum]['timeout'] * 1000
+ actual = job['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'])
+ 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']['data'])
+ 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']['data'])
+ 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']['data'])
+ else:
+ line = 'PASSED ' + line + ' criterion {0} > threshold {1}, data {2}'.format(target, suite[jobnum]['ss_limit'], job['steadystate']['data'])
+ else:
+ expected = suite[jobnum]['timeout'] * 1000
+ actual = job['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
projects / fio.git / blobdiff