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refactor(bench press): wrap measure values into an object with time and iteration number. 

Closes #689
This commit is contained in:
Tobias Bosch 2015-02-17 14:30:24 -08:00 committed by Misko Hevery
parent e163eb2a51
commit 5e798c632b
11 changed files with 106 additions and 52 deletions
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1
modules/benchpress/benchpress.js
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@ -12,5 +12,6 @@ export { PerflogMetric } from './src/metric/perflog_metric';
export { ChromeDriverExtension } from './src/webdriver/chrome_driver_extension';
export { Runner } from './src/runner';
export { Options } from './src/sample_options';
export { MeasureValues } from './src/measure_values';
export { bind, Injector, OpaqueToken } from 'angular2/di';

13
modules/benchpress/src/measure_values.js Normal file
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@ -0,0 +1,13 @@
import { Date } from 'angular2/src/facade/lang';
export class MeasureValues {
timeStamp:Date;
runIndex:number;
values:any;
constructor(runIndex:number, timeStamp:Date, values:any) {
this.timeStamp = timeStamp;
this.runIndex = runIndex;
this.values = values;
}
}

6
modules/benchpress/src/reporter.js
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@ -5,16 +5,18 @@ import {
ABSTRACT, BaseException
} from 'angular2/src/facade/lang';
import { MeasureValues } from './measure_values';
/**
* A reporter reports measure values and the valid sample.
*/
@ABSTRACT()
export class Reporter {
reportMeasureValues(index:number, values:any):Promise {
reportMeasureValues(values:MeasureValues):Promise {
throw new BaseException('NYI');
}
reportSample(completeSample:List, validSample:List):Promise {
reportSample(completeSample:List<MeasureValues>, validSample:List<MeasureValues>):Promise {
throw new BaseException('NYI');
}
}

9
modules/benchpress/src/reporter/console_reporter.js
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@ -7,6 +7,7 @@ import { bind, OpaqueToken } from 'angular2/di';
import { Statistic } from '../statistic';
import { Reporter } from '../reporter';
import { SampleDescription } from '../sample_description';
import { MeasureValues } from '../measure_values';
/**
* A reporter for the console
@ -72,20 +73,20 @@ export class ConsoleReporter extends Reporter {
this._printStringRow(this._metricNames.map( (_) => '' ), '-');
}
reportMeasureValues(index:number, measuredValues:any):Promise {
reportMeasureValues(measureValues:MeasureValues):Promise {
var formattedValues = ListWrapper.map(this._metricNames, (metricName) => {
var value = measuredValues[metricName];
var value = measureValues.values[metricName];
return ConsoleReporter._formatNum(value);
});
this._printStringRow(formattedValues);
return PromiseWrapper.resolve(null);
}
reportSample(completeSample:List, validSample:List):Promise {
reportSample(completeSample:List<MeasureValues>, validSample:List<MeasureValues>):Promise {
this._printStringRow(this._metricNames.map( (_) => '' ), '=');
this._printStringRow(
ListWrapper.map(this._metricNames, (metricName) => {
var sample = ListWrapper.map(validSample, (measuredValues) => measuredValues[metricName]);
var sample = ListWrapper.map(validSample, (measureValues) => measureValues.values[metricName]);
var mean = Statistic.calculateMean(sample);
var cv = Statistic.calculateCoefficientOfVariation(sample, mean);
return `${ConsoleReporter._formatNum(mean)}\u00B1${Math.floor(cv)}%`;

30
modules/benchpress/src/sampler.js
View File

@ -1,4 +1,4 @@
import { isPresent, isBlank } from 'angular2/src/facade/lang';
import { isPresent, isBlank, Date, DateWrapper } from 'angular2/src/facade/lang';
import { Promise, PromiseWrapper } from 'angular2/src/facade/async';
import { StringMapWrapper, List, ListWrapper } from 'angular2/src/facade/collection';
import { bind, OpaqueToken } from 'angular2/di';
@ -10,6 +10,7 @@ import { WebDriverExtension } from './web_driver_extension';
import { WebDriverAdapter } from './web_driver_adapter';
import { Options } from './sample_options';
import { MeasureValues} from './measure_values';
/**
* The Sampler owns the sample loop:
@ -22,6 +23,8 @@ import { Options } from './sample_options';
export class Sampler {
// TODO(tbosch): use static values when our transpiler supports them
static get BINDINGS() { return _BINDINGS; }
// TODO(tbosch): use static values when our transpiler supports them
static get TIME() { return _TIME; }
_driver:WebDriverAdapter;
_driverExtension:WebDriverExtension;
@ -31,13 +34,14 @@ export class Sampler {
_forceGc:boolean;
_prepare:Function;
_execute:Function;
_time:Function;
constructor({
driver, driverExtension, metric, reporter, validator, forceGc, prepare, execute
driver, driverExtension, metric, reporter, validator, forceGc, prepare, execute, time
}:{
driver: WebDriverAdapter,
driverExtension: WebDriverExtension, metric: Metric, reporter: Reporter,
validator: Validator, prepare: Function, execute: Function
validator: Validator, prepare: Function, execute: Function, time: Function
}={}) {
this._driver = driver;
this._driverExtension = driverExtension;
@ -47,6 +51,7 @@ export class Sampler {
this._forceGc = forceGc;
this._prepare = prepare;
this._execute = execute;
this._time = time;
}
sample():Promise<SampleState> {
@ -90,10 +95,11 @@ export class Sampler {
.then( (measureValues) => this._report(lastState, measureValues) );
}
_report(state:SampleState, measuredValues:any):Promise<SampleState> {
var completeSample = ListWrapper.concat(state.completeSample, [measuredValues]);
_report(state:SampleState, metricValues:any):Promise<SampleState> {
var measureValues = new MeasureValues(state.completeSample.length, this._time(), metricValues);
var completeSample = ListWrapper.concat(state.completeSample, [measureValues]);
var validSample = this._validator.validate(completeSample);
var resultPromise = this._reporter.reportMeasureValues(completeSample.length - 1, measuredValues);
var resultPromise = this._reporter.reportMeasureValues(measureValues);
if (isPresent(validSample)) {
resultPromise = resultPromise.then( (_) => this._reporter.reportSample(completeSample, validSample) )
}
@ -112,9 +118,11 @@ export class SampleState {
}
}
var _TIME = new OpaqueToken('Sampler.time');
var _BINDINGS = [
bind(Sampler).toFactory(
(driver, driverExtension, metric, reporter, validator, forceGc, prepare, execute) => new Sampler({
(driver, driverExtension, metric, reporter, validator, forceGc, prepare, execute, time) => new Sampler({
driver: driver,
driverExtension: driverExtension,
reporter: reporter,
@ -125,10 +133,12 @@ var _BINDINGS = [
// Mostly because the cache would have to be initialized with a
// special null object, which is expensive.
prepare: prepare !== false ? prepare : null,
execute: execute
execute: execute,
time: time
}),
[WebDriverAdapter, WebDriverExtension, Metric, Reporter, Validator, Options.FORCE_GC, Options.PREPARE, Options.EXECUTE]
[WebDriverAdapter, WebDriverExtension, Metric, Reporter, Validator, Options.FORCE_GC, Options.PREPARE, Options.EXECUTE, _TIME]
),
bind(Options.FORCE_GC).toValue(false),
bind(Options.PREPARE).toValue(false)
bind(Options.PREPARE).toValue(false),
bind(_TIME).toValue( () => DateWrapper.now() )
];

4
modules/benchpress/src/validator.js
View File

@ -3,6 +3,8 @@ import {
ABSTRACT, BaseException
} from 'angular2/src/facade/lang';
import { MeasureValues } from './measure_values';
/**
* A Validator calculates a valid sample out of the complete sample.
* A valid sample is a sample that represents the population that should be observed
@ -13,7 +15,7 @@ export class Validator {
/**
* Calculates a valid sample out of the complete sample
*/
validate(completeSample:List<any>):List<any> {
validate(completeSample:List<MeasureValues>):List<MeasureValues> {
throw new BaseException('NYI');
}

5
modules/benchpress/src/validator/regression_slope_validator.js
View File

@ -3,6 +3,7 @@ import { bind, OpaqueToken } from 'angular2/di';
import { Validator } from '../validator';
import { Statistic } from '../statistic';
import { MeasureValues } from '../measure_values';
/**
* A validator that checks the regression slope of a specific metric.
@ -32,7 +33,7 @@ export class RegressionSlopeValidator extends Validator {
};
}
validate(completeSample:List<any>):List<any> {
validate(completeSample:List<MeasureValues>):List<MeasureValues> {
if (completeSample.length >= this._sampleSize) {
var latestSample =
ListWrapper.slice(completeSample, completeSample.length - this._sampleSize, completeSample.length);
@ -42,7 +43,7 @@ export class RegressionSlopeValidator extends Validator {
// For now, we only use the array index as x value.
// TODO(tbosch): think about whether we should use time here instead
ListWrapper.push(xValues, i);
ListWrapper.push(yValues, latestSample[i][this._metric]);
ListWrapper.push(yValues, latestSample[i].values[this._metric]);
}
var regressionSlope = Statistic.calculateRegressionSlope(
xValues, Statistic.calculateMean(xValues),

17
modules/benchpress/test/reporter/console_reporter_spec.js
View File

@ -1,11 +1,11 @@
import {describe, ddescribe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import { isBlank, isPresent } from 'angular2/src/facade/lang';
import { isBlank, isPresent, Date, DateWrapper } from 'angular2/src/facade/lang';
import { List, ListWrapper } from 'angular2/src/facade/collection';
import {
SampleState, Reporter, bind, Injector,
ConsoleReporter, SampleDescription
ConsoleReporter, SampleDescription, MeasureValues
} from 'benchpress/benchpress';
export function main() {
@ -68,9 +68,9 @@ export function main() {
}
});
log = [];
reporter.reportMeasureValues(0, {
reporter.reportMeasureValues(mv(0, 0, {
'a': 1.23, 'b': 2
});
}));
expect(log).toEqual([
' 1.23 | 2.00'
]);
@ -85,11 +85,11 @@ export function main() {
}
});
log = [];
reporter.reportSample([], [{
reporter.reportSample([], [mv(0,0,{
'a': 3, 'b': 6
},{
}), mv(1,1,{
'a': 5, 'b': 9
}]);
})]);
expect(log).toEqual([
'======== | ========',
'4.00±25% | 7.50±20%'
@ -99,3 +99,6 @@ export function main() {
});
}
function mv(runIndex, time, values) {
return new MeasureValues(runIndex, DateWrapper.fromMillis(time), values);
}

32
modules/benchpress/test/sampler_spec.js
View File

@ -1,13 +1,13 @@
import {describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import { isBlank, isPresent, BaseException, stringify } from 'angular2/src/facade/lang';
import { isBlank, isPresent, BaseException, stringify, Date, DateWrapper } from 'angular2/src/facade/lang';
import { ListWrapper, List } from 'angular2/src/facade/collection';
import { PromiseWrapper, Promise } from 'angular2/src/facade/async';
import {
Sampler, WebDriverAdapter, WebDriverExtension,
Validator, Metric, Reporter, Browser,
bind, Injector, Options
bind, Injector, Options, MeasureValues
} from 'benchpress/benchpress';
export function main() {
@ -26,6 +26,7 @@ export function main() {
prepare,
execute
} = {}) {
var time = 1000;
if (isBlank(metric)) {
metric = new MockMetric([]);
}
@ -44,7 +45,8 @@ export function main() {
bind(WebDriverAdapter).toValue(driver),
bind(WebDriverExtension).toValue(driverExtension),
bind(Options.EXECUTE).toValue(execute),
bind(Validator).toValue(validator)
bind(Validator).toValue(validator),
bind(Sampler.TIME).toValue( () => DateWrapper.fromMillis(time++) )
]);
if (isPresent(prepare)) {
ListWrapper.push(bindings, bind(Options.PREPARE).toValue(prepare));
@ -181,8 +183,8 @@ export function main() {
});
sampler.sample().then( (state) => {
expect(state.completeSample.length).toBe(2);
expect(state.completeSample[0]).toEqual({'script': 10});
expect(state.completeSample[1]).toEqual({'script': 20});
expect(state.completeSample[0]).toEqual(mv(0, 1000, {'script': 10}));
expect(state.completeSample[1]).toEqual(mv(1, 1001, {'script': 20}));
done();
});
});
@ -206,10 +208,10 @@ export function main() {
expect(log.length).toBe(2);
expect(log[0]).toEqual(
['validate', [{'script': 0}], null]
['validate', [mv(0, 1000, {'script': 0})], null]
);
expect(log[1]).toEqual(
['validate', [{'script': 0}, {'script': 1}], validSample]
['validate', [mv(0, 1000, {'script': 0}), mv(1, 1001, {'script': 1})], validSample]
);
done();
@ -234,13 +236,13 @@ export function main() {
// ]);
expect(log.length).toBe(3);
expect(log[0]).toEqual(
['reportMeasureValues', 0, {'script': 0}]
['reportMeasureValues', mv(0, 1000, {'script': 0})]
);
expect(log[1]).toEqual(
['reportMeasureValues', 1, {'script': 1}]
['reportMeasureValues', mv(1, 1001, {'script': 1})]
);
expect(log[2]).toEqual(
['reportSample', [{'script': 0}, {'script': 1}], validSample]
['reportSample', [mv(0, 1000, {'script': 0}), mv(1, 1001, {'script': 1})], validSample]
);
done();
@ -250,6 +252,10 @@ export function main() {
});
}
function mv(runIndex, time, values) {
return new MeasureValues(runIndex, DateWrapper.fromMillis(time), values);
}
function createCountingValidator(count, validSample = null, log = null) {
return new MockValidator(log, (completeSample) => {
count--;
@ -315,7 +321,7 @@ class MockValidator extends Validator {
}
this._log = log;
}
validate(completeSample:List<Object>):List<Object> {
validate(completeSample:List<MeasureValues>):List<MeasureValues> {
var stableSample = isPresent(this._validate) ? this._validate(completeSample) : completeSample;
ListWrapper.push(this._log, ['validate', completeSample, stableSample]);
return stableSample;
@ -353,8 +359,8 @@ class MockReporter extends Reporter {
}
this._log = log;
}
reportMeasureValues(index, values):Promise {
ListWrapper.push(this._log, ['reportMeasureValues', index, values]);
reportMeasureValues(values):Promise {
ListWrapper.push(this._log, ['reportMeasureValues', values]);
return PromiseWrapper.resolve(null);
}
reportSample(completeSample, validSample):Promise {

22
modules/benchpress/test/validator/regression_slope_validator_spec.js
View File

@ -1,7 +1,9 @@
import {describe, ddescribe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import { Date, DateWrapper } from 'angular2/src/facade/lang';
import { ListWrapper } from 'angular2/src/facade/collection';
import {
Validator, RegressionSlopeValidator, Injector, bind
Validator, RegressionSlopeValidator, Injector, bind, MeasureValues
} from 'benchpress/benchpress';
export function main() {
@ -27,25 +29,31 @@ export function main() {
it('should return null while the completeSample is smaller than the given size', () => {
createValidator({size: 2, metric: 'script'});
expect(validator.validate([])).toBe(null);
expect(validator.validate([{}])).toBe(null);
expect(validator.validate([mv(0,0,{})])).toBe(null);
});
it('should return null while the regression slope is < 0', () => {
createValidator({size: 2, metric: 'script'});
expect(validator.validate([{'script':2}, {'script':1}])).toBe(null);
expect(validator.validate([mv(0,0,{'script':2}), mv(1,1,{'script':1})])).toBe(null);
});
it('should return the last sampleSize runs when the regression slope is ==0', () => {
createValidator({size: 2, metric: 'script'});
expect(validator.validate([{'script':1}, {'script':1}])).toEqual([{'script':1}, {'script':1}]);
expect(validator.validate([{'script':1}, {'script':1}, {'script':1}])).toEqual([{'script':1}, {'script':1}]);
var sample = [mv(0,0,{'script':1}), mv(1,1,{'script':1}), mv(2,2,{'script':1})];
expect(validator.validate(ListWrapper.slice(sample,0,2))).toEqual(ListWrapper.slice(sample,0,2));
expect(validator.validate(sample)).toEqual(ListWrapper.slice(sample,1,3));
});
it('should return the last sampleSize runs when the regression slope is >0', () => {
createValidator({size: 2, metric: 'script'});
expect(validator.validate([{'script':1}, {'script':2}])).toEqual([{'script':1}, {'script':2}]);
expect(validator.validate([{'script':1}, {'script':2}, {'script':3}])).toEqual([{'script':2}, {'script':3}]);
var sample = [mv(0,0,{'script':1}), mv(1,1,{'script':2}), mv(2,2,{'script':3})];
expect(validator.validate(ListWrapper.slice(sample,0,2))).toEqual(ListWrapper.slice(sample,0,2));
expect(validator.validate(sample)).toEqual(ListWrapper.slice(sample,1,3));
});
});
}
function mv(runIndex, time, values) {
return new MeasureValues(runIndex, DateWrapper.fromMillis(time), values);
}

15
modules/benchpress/test/validator/size_validator_spec.js
View File

@ -1,7 +1,9 @@
import {describe, ddescribe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
import { Date, DateWrapper } from 'angular2/src/facade/lang';
import { ListWrapper } from 'angular2/src/facade/collection';
import {
Validator, SizeValidator, Injector, bind
Validator, SizeValidator, Injector, bind, MeasureValues
} from 'benchpress/benchpress';
export function main() {
@ -25,14 +27,19 @@ export function main() {
it('should return null while the completeSample is smaller than the given size', () => {
createValidator(2);
expect(validator.validate([])).toBe(null);
expect(validator.validate([{}])).toBe(null);
expect(validator.validate([mv(0,0,{})])).toBe(null);
});
it('should return the last sampleSize runs when it has at least the given size', () => {
createValidator(2);
expect(validator.validate([{'a':1}, {'b':2}])).toEqual([{'a':1}, {'b':2}]);
expect(validator.validate([{'a':1}, {'b':2}, {'c':3}])).toEqual([{'b':2}, {'c':3}]);
var sample = [mv(0,0,{'a':1}), mv(1,1,{'b':2}), mv(2,2,{'c':3})];
expect(validator.validate(ListWrapper.slice(sample, 0, 2))).toEqual(ListWrapper.slice(sample, 0, 2));
expect(validator.validate(sample)).toEqual(ListWrapper.slice(sample, 1, 3));
});
});
}
function mv(runIndex, time, values) {
return new MeasureValues(runIndex, DateWrapper.fromMillis(time), values);
}