# SPDX-License-Identifier: GPL-2.0 import re import csv import json import argparse from pathlib import Path import subprocess
class TestError: def __init__(self, metric: list[str], wl: str, value: list[float], low: float, up=float('nan'), description=str()):
self.metric: list = metric # multiple metrics in relationship type tests
self.workloads = [wl] # multiple workloads possible
self.collectedValue: list = value
self.valueLowBound = low
self.valueUpBound = up
self.description = description
def __repr__(self) -> str: if len(self.metric) > 1: return"\nMetric Relationship Error: \tThe collected value of metric {0}\n\
\tis {1} in workload(s): {2} \n\
\tbut expected value range is [{3}, {4}]\n\
\tRelationship rule description: \'{5}\'".format(self.metric, self.collectedValue, self.workloads,
self.valueLowBound, self.valueUpBound, self.description) elif len(self.collectedValue) == 0: return"\nNo Metric Value Error: \tMetric {0} returns with no value \n\
\tworkload(s): {1}".format(self.metric, self.workloads) else: return"\nWrong Metric Value Error: \tThe collected value of metric {0}\n\
\tis {1} in workload(s): {2}\n\
\tbut expected value range is [{3}, {4}]"\
.format(self.metric, self.collectedValue, self.workloads,
self.valueLowBound, self.valueUpBound)
self.workloads = [x for x in workload.split(",") if x]
self.wlidx = 0 # idx of current workloads
self.allresults = dict() # metric results of all workload
self.alltotalcnt = dict()
self.allpassedcnt = dict()
self.results = dict() # metric results of current workload # vars for test pass/failure statistics # metrics with no results or negative results, neg result counts failed tests
self.ignoremetrics = set()
self.totalcnt = 0
self.passedcnt = 0 # vars for errors
self.errlist = list()
# vars for Rule Generator
self.pctgmetrics = set() # Percentage rule
# vars for debug
self.datafname = datafname
self.debug = debug
self.fullrulefname = fullrulefname
def read_json(self, filename: str) -> dict: try: with open(Path(filename).resolve(), "r") as f:
data = json.loads(f.read()) except OSError as e:
print(f"Error when reading file {e}")
sys.exit()
with open(output_file, "w+") as output_file:
json.dump(data,
output_file,
ensure_ascii=True,
indent=4)
def get_results(self, idx: int = 0): return self.results.get(idx)
def get_bounds(self, lb, ub, error, alias={}, ridx: int = 0) -> list: """
Get bounds and tolerance from lb, ub, and error. If missing lb, use 0.0; missing ub, use float('inf); missing error, use self.tolerance.
@param lb: str/float, lower bound
@param ub: str/float, upper bound
@param error: float/str, error tolerance
@returns: lower bound, return inf if the lower bound is a metric value andisnot collected
upper bound, return -1 if the upper bound is a metric value andisnot collected
tolerance, denormalized base on upper bound value """ # init ubv and lbv to invalid values def get_bound_value(bound, initval, ridx):
val = initval if isinstance(bound, int) or isinstance(bound, float):
val = bound elif isinstance(bound, str): if bound == '':
val = float("inf") elif bound in alias:
vall = self.get_value(alias[ub], ridx) if vall:
val = vall[0] elif bound.replace('.', '1').isdigit():
val = float(bound) else:
print("Wrong bound: {0}".format(bound)) else:
print("Wrong bound: {0}".format(bound)) return val
# denormalize error threshold
denormerr = t * ubv / 100 if ubv != 100 and ubv > 0 else t
return lbv, ubv, denormerr
def get_value(self, name: str, ridx: int = 0) -> list: """
Get value of the metric from self.results. If result of this metric isnot provided, the metric name will be added into self.ignoremetics.
All future test(s) on this metric will fail.
@param name: name of the metric
@returns: list with value found in self.results; list is empty when value isnot found. """
results = []
data = self.results[ridx] if ridx in self.results else self.results[0] if name notin self.ignoremetrics: if name in data:
results.append(data[name]) elif name.replace('.', '1').isdigit():
results.append(float(name)) else:
self.ignoremetrics.add(name) return results
def check_bound(self, val, lb, ub, err): returnTrueif val <= ub + err and val >= lb - err elseFalse
# Positive Value Sanity check def pos_val_test(self): """
Check if metrics value are non-negative.
One metric is counted as one test.
Failure: when metric value is negative ornot provided.
Metrics with negative value will be added into self.ignoremetrics. """
negmetric = dict()
pcnt = 0
tcnt = 0
rerun = list()
results = self.get_results() ifnot results: return for name, val in results.items(): if val < 0:
negmetric[name] = val
rerun.append(name) else:
pcnt += 1
tcnt += 1 # The first round collect_perf() run these metrics with simple workload # "true". We give metrics a second chance with a longer workload if less # than 20 metrics failed positive test. if len(rerun) > 0 and len(rerun) < 20:
second_results = dict()
self.second_test(rerun, second_results) for name, val in second_results.items(): if name notin negmetric: continue if val >= 0: del negmetric[name]
pcnt += 1
if len(negmetric.keys()):
self.ignoremetrics.update(negmetric.keys())
self.errlist.extend(
[TestError([m], self.workloads[self.wlidx], negmetric[m], 0) for m in negmetric.keys()])
return
def evaluate_formula(self, formula: str, alias: dict, ridx: int = 0): """
Evaluate the value of formula.
@param formula: the formula to be evaluated
@param alias: the dict has alias to metric name mapping
@returns: value of the formula is success; -1 if the one or more metric value not provided """
stack = []
b = 0
errs = []
sign = "+"
f = str()
# TODO: support parenthesis? for i in range(len(formula)): if i+1 == len(formula) or formula[i] in ('+', '-', '*', '/'):
s = alias[formula[b:i]] if i + \
1 < len(formula) else alias[formula[b:]]
v = self.get_value(s, ridx) ifnot v:
errs.append(s) else:
f = f + "{0}(={1:.4f})".format(s, v[0]) if sign == "*":
stack[-1] = stack[-1] * v elif sign == "/":
stack[-1] = stack[-1] / v elif sign == '-':
stack.append(-v[0]) else:
stack.append(v[0]) if i + 1 < len(formula):
sign = formula[i]
f += sign
b = i + 1
if len(errs) > 0: return -1, "Metric value missing: "+','.join(errs)
val = sum(stack) return val, f
# Relationships Tests def relationship_test(self, rule: dict): """
Validate if the metrics follow the required relationship in the rule.
eg. lower_bound <= eval(formula)<= upper_bound
One rule is counted as ont test.
Failure: when one or more metric result(s) not provided, or when formula evaluated outside of upper/lower bounds.
@param rule: dict with metric name(+alias), formula, and required upper and lower bounds. """
alias = dict() for m in rule['Metrics']:
alias[m['Alias']] = m['Name']
lbv, ubv, t = self.get_bounds(
rule['RangeLower'], rule['RangeUpper'], rule['ErrorThreshold'], alias, ridx=rule['RuleIndex'])
val, f = self.evaluate_formula(
rule['Formula'], alias, ridx=rule['RuleIndex'])
lb = rule['RangeLower']
ub = rule['RangeUpper'] if isinstance(lb, str): if lb in alias:
lb = alias[lb] if isinstance(ub, str): if ub in alias:
ub = alias[ub]
if val == -1:
self.errlist.append(TestError([m['Name'] for m in rule['Metrics']], self.workloads[self.wlidx], [],
lb, ub, rule['Description'])) elifnot self.check_bound(val, lbv, ubv, t):
self.errlist.append(TestError([m['Name'] for m in rule['Metrics']], self.workloads[self.wlidx], [val],
lb, ub, rule['Description'])) else:
self.passedcnt += 1
self.totalcnt += 1
return
# Single Metric Test def single_test(self, rule: dict): """
Validate if the metrics are in the required value range.
eg. lower_bound <= metrics_value <= upper_bound
One metric is counted as one test in this type of test.
One rule may include one or more metrics.
Failure: when the metric value not provided or the value is outside the bounds.
This test updates self.total_cnt.
@param rule: dict with metrics to validate and the value range requirement """
lbv, ubv, t = self.get_bounds(
rule['RangeLower'], rule['RangeUpper'], rule['ErrorThreshold'])
metrics = rule['Metrics']
passcnt = 0
totalcnt = 0
failures = dict()
rerun = list() for m in metrics:
totalcnt += 1
result = self.get_value(m['Name']) if len(result) > 0 and self.check_bound(result[0], lbv, ubv, t) or m['Name'] in self.skiplist:
passcnt += 1 else:
failures[m['Name']] = result
rerun.append(m['Name'])
if len(rerun) > 0 and len(rerun) < 20:
second_results = dict()
self.second_test(rerun, second_results) for name, val in second_results.items(): if name notin failures: continue if self.check_bound(val, lbv, ubv, t):
passcnt += 1 del failures[name] else:
failures[name] = [val]
self.results[0][name] = val
self.totalcnt += totalcnt
self.passedcnt += passcnt if len(failures.keys()) != 0:
self.errlist.extend([TestError([name], self.workloads[self.wlidx], val,
rule['RangeLower'], rule['RangeUpper']) for name, val in failures.items()])
return
def create_report(self): """
Create final report and write into a JSON file. """
print(self.errlist)
if self.debug:
allres = [{"Workload": self.workloads[i], "Results": self.allresults[i]} for i in range(0, len(self.workloads))]
self.json_dump(allres, self.datafname)
def check_rule(self, testtype, metric_list): """
Check if the rule uses metric(s) that not exist in current platform.
@param metric_list: list of metrics from the rule.
@return: False when find one metric out in Metric file. (This rule should not skipped.) True when all metrics used in the rule are found in Metric file. """ if testtype == "RelationshipTest": for m in metric_list: if m['Name'] notin self.metrics: returnFalse returnTrue
# Start of Collector and Converter def convert(self, data: list, metricvalues: dict): """
Convert collected metric data from the -j output to dict of {metric_name:value}. """ for json_string in data: try:
result = json.loads(json_string) if"metric-unit"in result and result["metric-unit"] != "(null)"and result["metric-unit"] != "":
name = result["metric-unit"].split(" ")[1] if len(result["metric-unit"].split(" ")) > 1 \ else result["metric-unit"]
metricvalues[name.lower()] = float(result["metric-value"]) except ValueError as error: continue return
def _run_perf(self, metric, workload: str):
tool = 'perf'
command = [tool, 'stat', '--cputype', self.cputype, '-j', '-M', f"{metric}", "-a"]
wl = workload.split()
command.extend(wl)
print(" ".join(command))
cmd = subprocess.run(command, stderr=subprocess.PIPE, encoding='utf-8')
data = [x+'}'for x in cmd.stderr.split('}\n') if x] if data[0][0] != '{':
data[0] = data[0][data[0].find('{'):] return data
def collect_perf(self, workload: str): """
Collect metric data with"perf stat -M" on given workload with -a and -j. """
self.results = dict()
print(f"Starting perf collection")
print(f"Long workload: {workload}")
collectlist = dict() if self.collectlist != "":
collectlist[0] = {x for x in self.collectlist.split(",")} else:
collectlist[0] = set(list(self.metrics)) # Create metric set for relationship rules for rule in self.rules: if rule["TestType"] == "RelationshipTest":
metrics = [m["Name"] for m in rule["Metrics"]] ifnot any(m notin collectlist[0] for m in metrics):
collectlist[rule["RuleIndex"]] = [ ",".join(list(set(metrics)))]
for idx, metrics in collectlist.items(): if idx == 0:
wl = "true" else:
wl = workload for metric in metrics:
data = self._run_perf(metric, wl) if idx notin self.results:
self.results[idx] = dict()
self.convert(data, self.results[idx]) return
def second_test(self, collectlist, second_results):
workload = self.workloads[self.wlidx] for metric in collectlist:
data = self._run_perf(metric, workload)
self.convert(data, second_results)
# End of Collector and Converter
# Start of Rule Generator def parse_perf_metrics(self): """
Read and parse perf metric file:
1) find metrics with'1%'or'100%'as ScaleUnit for Percent check
2) create metric name list """
command = ['perf', 'list', '-j', '--details', 'metrics']
cmd = subprocess.run(command, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, encoding='utf-8') try:
data = json.loads(cmd.stdout) for m in data: if'MetricName'notin m:
print("Warning: no metric name") continue if'Unit'in m and m['Unit'] != self.cputype: continue
name = m['MetricName'].lower()
self.metrics.add(name) if'ScaleUnit'in m and (m['ScaleUnit'] == '1%'or m['ScaleUnit'] == '100%'):
self.pctgmetrics.add(name.lower()) except ValueError as error:
print(f"Error when parsing metric data")
sys.exit()
return
def remove_unsupported_rules(self, rules):
new_rules = [] for rule in rules:
add_rule = True for m in rule["Metrics"]: if m["Name"] in self.skiplist or m["Name"] notin self.metrics:
add_rule = False break if add_rule:
new_rules.append(rule) return new_rules
def create_rules(self): """
Create full rules which includes:
1) All the rules from the "relationshi_rules" file
2) SingleMetric rule for all the 'percent' metrics
Reindex all the rules to avoid repeated RuleIndex """
data = self.read_json(self.rulefname)
rules = data['RelationshipRules']
self.skiplist = set([name.lower() for name in data['SkipList']])
self.rules = self.remove_unsupported_rules(rules)
pctgrule = {'RuleIndex': 0, 'TestType': 'SingleMetricTest', 'RangeLower': '0', 'RangeUpper': '100', 'ErrorThreshold': self.tolerance, 'Description': 'Metrics in percent unit have value with in [0, 100]', 'Metrics': [{'Name': m.lower()} for m in self.pctgmetrics]}
self.rules.append(pctgrule)
# Re-index all rules to avoid repeated RuleIndex
idx = 1 for r in self.rules:
r['RuleIndex'] = idx
idx += 1
if self.debug: # TODO: need to test and generate file name correctly
data = {'RelationshipRules': self.rules, 'SupportedMetrics': [
{"MetricName": name} for name in self.metrics]}
self.json_dump(data, self.fullrulefname)
return # End of Rule Generator
def _storewldata(self, key): '''
Store all the data of one workload into the corresponding data structure for all workloads.
@param key: key to the dictionaries (index of self.workloads). '''
self.allresults[key] = self.results
self.alltotalcnt[key] = self.totalcnt
self.allpassedcnt[key] = self.passedcnt
# Initialize data structures before data validation of each workload def _init_data(self):
def test(self): '''
The real entry point of the test framework.
This function loads the validation rule JSON file and Standard Metric file to create rules for
testing and namemap dictionaries.
It also reads in result JSON file for testing.
In the test process, it passes through each rule and launch correct test function bases on the 'TestType' field of the rule.
The final report is written into a JSON file. ''' ifnot self.collectlist:
self.parse_perf_metrics() ifnot self.metrics:
print("No metric found for testing") return 0
self.create_rules() for i in range(0, len(self.workloads)):
self.wlidx = i
self._init_data()
self.collect_perf(self.workloads[i]) # Run positive value test
self.pos_val_test() for r in self.rules: # skip rules that uses metrics not exist in this platform
testtype = r['TestType'] ifnot self.check_rule(testtype, r['Metrics']): continue if testtype == 'RelationshipTest':
self.relationship_test(r) elif testtype == 'SingleMetricTest':
self.single_test(r) else:
print("Unsupported Test Type: ", testtype)
print("Workload: ", self.workloads[i])
print("Total Test Count: ", self.totalcnt)
print("Passed Test Count: ", self.passedcnt)
self._storewldata(i)
self.create_report() return len(self.errlist) > 0 # End of Class Validator
parser.add_argument( "-rule", help="Base validation rule file", required=True)
parser.add_argument( "-output_dir", help="Path for validator output file, report file", required=True)
parser.add_argument("-debug", help="Debug run, save intermediate data to files",
action="store_true", default=False)
parser.add_argument( "-wl", help="Workload to run while data collection", default="true")
parser.add_argument("-m", help="Metric list to validate", default="")
parser.add_argument("-cputype", help="Only test metrics for the given CPU/PMU type",
default="cpu")
args = parser.parse_args()
outpath = Path(args.output_dir)
reportf = Path.joinpath(outpath, 'perf_report.json')
fullrule = Path.joinpath(outpath, 'full_rule.json')
datafile = Path.joinpath(outpath, 'perf_data.json')
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.