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FioCompare.py
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OK = '\033[92m'
FAIL = '\033[91m'
ENDC = '\033[0m'
default_keys = [ 'iops', 'io_kbytes', 'bw' ]
latency_keys = [ 'lat_ns_min', 'lat_ns_max' ]
main_job_keys = [ 'sys_cpu', 'elapsed' ]
io_ops = ['read', 'write', 'trim' ]
def _fuzzy_compare(a, b, fuzzy):
if a == b:
return 0
if a == 0:
return 100
a = float(a)
b = float(b)
fuzzy = float(fuzzy)
val = ((b - a) / a) * 100
if val > fuzzy or val < -fuzzy:
return val;
return 0
def _compare_jobs(ijob, njob, latency, fuzz):
failed = 0
for k in default_keys:
for io in io_ops:
key = "{}_{}".format(io, k)
comp = _fuzzy_compare(ijob[key], njob[key], fuzz)
if comp < 0:
outstr = " {} regressed: old {} new {} {}%".format(key,
ijob[key], njob[key], comp)
print(FAIL + outstr + ENDC)
failed += 1
elif comp > 0:
outstr = " {} improved: old {} new {} {}%".format(key,
ijob[key], njob[key], comp)
print(OK + outstr + ENDC)
for k in latency_keys:
if not latency:
break
for io in io_ops:
key = "{}_{}".format(io, k)
comp = _fuzzy_compare(ijob[key], njob[key], fuzz)
if comp > 0:
outstr = " {} regressed: old {} new {} {}%".format(key,
ijob[key], njob[key], comp)
print(FAIL + outstr + ENDC)
failed += 1
elif comp < 0:
outstr = " {} improved: old {} new {} {}%".format(key,
ijob[key], njob[key], comp)
print(OK + outstr + ENDC)
for k in main_job_keys:
comp = _fuzzy_compare(ijob[k], njob[k], fuzz)
if comp > 0:
outstr = " {} regressed: old {} new {} {}%".format(k, ijob[k],
njob[k], comp)
print(FAIL + outstr + ENDC)
failed += 1
elif comp < 0:
outstr = " {} improved: old {} new {} {}%".format(k, ijob[k],
njob[k], comp)
print(OK + outstr + ENDC)
return failed
def compare_individual_jobs(initial, data, fuzz):
failed = 0;
initial_jobs = initial['jobs'][:]
for njob in data['jobs']:
for ijob in initial_jobs:
if njob['jobname'] == ijob['jobname']:
print(" Checking results for {}".format(njob['jobname']))
failed += _compare_jobs(ijob, njob, fuzz)
initial_jobs.remove(ijob)
break
return failed
def default_merge(data):
'''Default merge function for multiple jobs in one run
For runs that include multiple threads we will have a lot of variation
between the different threads, which makes comparing them to eachother
across multiple runs less that useful. Instead merge the jobs into a single
job. This function does that by adding up 'iops', 'io_kbytes', and 'bw' for
read/write/trim in the merged job, and then taking the maximal values of the
latency numbers.
'''
merge_job = {}
for job in data['jobs']:
for k in main_job_keys:
if k not in merge_job:
merge_job[k] = job[k]
else:
merge_job[k] += job[k]
for io in io_ops:
for k in default_keys:
key = "{}_{}".format(io, k)
if key not in merge_job:
merge_job[key] = job[key]
else:
merge_job[key] += job[key]
for k in latency_keys:
key = "{}_{}".format(io, k)
if key not in merge_job:
merge_job[key] = job[key]
elif merge_job[key] < job[key]:
merge_job[key] = job[key]
return merge_job
def compare_fiodata(initial, data, latency, merge_func=default_merge, fuzz=5):
failed = 0
if merge_func is None:
return compare_individual_jobs(initial, data, fuzz)
ijob = merge_func(initial)
njob = merge_func(data)
return _compare_jobs(ijob, njob, latency, fuzz)