How to use Percentile method of stats Package

Best Syzkaller code snippet using stats.Percentile

results_test.go

Source:results_test.go Github

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...59Total Hits: 060Error Rate: 0.00%61Mean Response Time: 0.00ms62Median Response Time: 0.00ms6395th Percentile: 0.00ms64Score: 0.0065`,66 `--------- Timings Report ------------67Route: /test/route/168Total Hits: 069Error Rate: 0.00%70Mean Response Time: 0.00ms71Median Response Time: 0.00ms7295th Percentile: 0.00ms7390th Percentile: 0.00ms74Max Response Time: 0ms75Min Response Time: 0ms76Inter Quartile Range: 077Score: 0.0078`,79 },80 {81 "route with data points, no errors",82 encodeClientTimingStats(83 &loadtest.ClientTimingStats{84 Routes: map[string]*loadtest.RouteStats{85 "/test/route/1": &loadtest.RouteStats{86 Name: "/test/route/1",87 NumHits: 15,88 Duration: []float64{89 1, 2, 3, 4, 5,90 6, 7, 8, 9, 10,91 20, 40, 60, 80, 100,92 },93 },94 },95 },96 ),97 false,98 `--------- Timings Report ------------99Route: /test/route/1100Total Hits: 15101Error Rate: 0.00%102Mean Response Time: 23.67ms103Median Response Time: 8.00ms10495th Percentile: 90.00ms105Score: 134.00106`,107 `--------- Timings Report ------------108Route: /test/route/1109Total Hits: 15110Error Rate: 0.00%111Mean Response Time: 23.67ms112Median Response Time: 8.00ms11395th Percentile: 90.00ms11490th Percentile: 70.00ms115Max Response Time: 100ms116Min Response Time: 1ms117Inter Quartile Range: 36118Score: 134.00119`,120 },121 {122 "route with data points, some errors",123 encodeClientTimingStats(124 &loadtest.ClientTimingStats{125 Routes: map[string]*loadtest.RouteStats{126 "/test/route/1": &loadtest.RouteStats{127 Name: "/test/route/1",128 NumHits: 20,129 NumErrors: 5,130 Duration: []float64{131 1, 2, 3, 4, 5,132 6, 7, 8, 9, 10,133 20, 40, 60, 80, 100,134 },135 },136 },137 },138 ),139 false,140 `--------- Timings Report ------------141Route: /test/route/1142Total Hits: 20143Error Rate: 25.00%144Mean Response Time: 23.67ms145Median Response Time: 8.00ms14695th Percentile: 90.00ms147Score: 134.00148`,149 `--------- Timings Report ------------150Route: /test/route/1151Total Hits: 20152Error Rate: 25.00%153Mean Response Time: 23.67ms154Median Response Time: 8.00ms15595th Percentile: 90.00ms15690th Percentile: 70.00ms157Max Response Time: 100ms158Min Response Time: 1ms159Inter Quartile Range: 36160Score: 134.00161`,162 },163 {164 "route without data points, all errors",165 encodeClientTimingStats(166 &loadtest.ClientTimingStats{167 Routes: map[string]*loadtest.RouteStats{168 "/test/route/1": &loadtest.RouteStats{169 Name: "/test/route/1",170 NumHits: 20,171 NumErrors: 20,172 Duration: []float64{},173 },174 },175 },176 ),177 false,178 `--------- Timings Report ------------179Route: /test/route/1180Total Hits: 20181Error Rate: 100.00%182Mean Response Time: 0.00ms183Median Response Time: 0.00ms18495th Percentile: 0.00ms185Score: 0.00186`,187 `--------- Timings Report ------------188Route: /test/route/1189Total Hits: 20190Error Rate: 100.00%191Mean Response Time: 0.00ms192Median Response Time: 0.00ms19395th Percentile: 0.00ms19490th Percentile: 0.00ms195Max Response Time: 0ms196Min Response Time: 0ms197Inter Quartile Range: 0198Score: 0.00199`,200 },201 {202 "multiple routes",203 encodeClientTimingStats(204 &loadtest.ClientTimingStats{205 Routes: map[string]*loadtest.RouteStats{206 "/test/route/1": &loadtest.RouteStats{207 Name: "/test/route/1",208 NumHits: 25,209 NumErrors: 10,210 Duration: []float64{211 20, 40, 60, 80, 100,212 1, 2, 3, 4, 5,213 6, 7, 8, 9, 10,214 },215 },216 "/test/route/2": &loadtest.RouteStats{217 Name: "/test/route/2",218 NumHits: 16,219 NumErrors: 0,220 Duration: []float64{221 1, 2, 3, 4, 5,222 6, 7, 8, 9, 10,223 20, 40, 60, 80, 100,224 1000,225 },226 },227 },228 },229 ),230 false,231 `--------- Timings Report ------------232Route: /test/route/1233Total Hits: 25234Error Rate: 40.00%235Mean Response Time: 23.67ms236Median Response Time: 8.00ms23795th Percentile: 90.00ms238Route: /test/route/2239Total Hits: 16240Error Rate: 0.00%241Mean Response Time: 84.69ms242Median Response Time: 8.50ms24395th Percentile: 550.00ms244Score: 369.00245`,246 `--------- Timings Report ------------247Route: /test/route/1248Total Hits: 25249Error Rate: 40.00%250Mean Response Time: 23.67ms251Median Response Time: 8.00ms25295th Percentile: 90.00ms25390th Percentile: 70.00ms254Max Response Time: 100ms255Min Response Time: 1ms256Inter Quartile Range: 36257Route: /test/route/2258Total Hits: 16259Error Rate: 0.00%260Mean Response Time: 84.69ms261Median Response Time: 8.50ms26295th Percentile: 550.00ms26390th Percentile: 90.00ms264Max Response Time: 1000ms265Min Response Time: 1ms266Inter Quartile Range: 45.5267Score: 369.00268`,269 },270 }271 for _, testCase := range testCases {272 t.Run(testCase.Description, func(t *testing.T) {273 test := func(t *testing.T, verbose bool, expectedOutput string) {274 output := &strings.Builder{}275 config := &ltparse.ResultsConfig{276 Input: strings.NewReader(testCase.Input),277 BaselineInput: nil,278 Output: output,279 Display: "text",280 Aggregate: false,281 Verbose: verbose,282 }283 err := ltparse.ParseResults(config)284 if testCase.ExpectedError {285 assert.Error(t, err)286 } else {287 require.NoError(t, err)288 }289 require.Equal(t, expectedOutput, output.String())290 }291 t.Run("normal", func(t *testing.T) {292 test(t, false, testCase.ExpectedOutput)293 })294 t.Run("verbose", func(t *testing.T) {295 test(t, true, testCase.ExpectedVerboseOutput)296 })297 })298 }299}300func TestParseMarkdownResults(t *testing.T) {301 testCases := []struct {302 Description string303 Input string304 ExpectedError bool305 ExpectedOutput string306 ExpectedVerboseOutput string307 }{308 {309 "malformed input",310 "{not json",311 true,312 "",313 "",314 },315 {316 "no routes",317 encodeClientTimingStats(nil),318 false,319 `## Loadtest Results320### Score: 0.00321The score is the average of the 95th percentile, median and interquartile ranges in the routes below.322### Routes323`,324 `## Loadtest Results325### Score: 0.00326The score is the average of the 95th percentile, median and interquartile ranges in the routes below.327### Routes328`,329 },330 {331 "route with no data points",332 encodeClientTimingStats(333 &loadtest.ClientTimingStats{334 Routes: map[string]*loadtest.RouteStats{335 "/test/route/1": &loadtest.RouteStats{336 Name: "/test/route/1",337 },338 },339 },340 ),341 false,342 `## Loadtest Results343### Score: 0.00344The score is the average of the 95th percentile, median and interquartile ranges in the routes below.345### Routes346#### /test/route/1347| Metric | Actual |348| --- | --- |349| Hits | 0 |350| Error Rate | 0.00% |351| Mean Response Time | 0.00ms |352| Median Response Time | 0.00ms |353| 95th Percentile | 0.00ms |354`,355 `## Loadtest Results356### Score: 0.00357The score is the average of the 95th percentile, median and interquartile ranges in the routes below.358### Routes359#### /test/route/1360| Metric | Actual |361| --- | --- |362| Hits | 0 |363| Error Rate | 0.00% |364| Mean Response Time | 0.00ms |365| Median Response Time | 0.00ms |366| 95th Percentile | 0.00ms |367| 90th Percentile | 0.00ms |368| Max Response Time | 0ms |369| Min Response Time | 0ms |370| Inter Quartile Range | 0 |371`,372 },373 {374 "route with data points, no errors",375 encodeClientTimingStats(376 &loadtest.ClientTimingStats{377 Routes: map[string]*loadtest.RouteStats{378 "/test/route/1": &loadtest.RouteStats{379 Name: "/test/route/1",380 NumHits: 15,381 Duration: []float64{382 1, 2, 3, 4, 5,383 6, 7, 8, 9, 10,384 20, 40, 60, 80, 100,385 },386 },387 },388 },389 ),390 false,391 `## Loadtest Results392### Score: 134.00393The score is the average of the 95th percentile, median and interquartile ranges in the routes below.394### Routes395#### /test/route/1396| Metric | Actual |397| --- | --- |398| Hits | 15 |399| Error Rate | 0.00% |400| Mean Response Time | 23.67ms |401| Median Response Time | 8.00ms |402| 95th Percentile | 90.00ms |403`,404 `## Loadtest Results405### Score: 134.00406The score is the average of the 95th percentile, median and interquartile ranges in the routes below.407### Routes408#### /test/route/1409| Metric | Actual |410| --- | --- |411| Hits | 15 |412| Error Rate | 0.00% |413| Mean Response Time | 23.67ms |414| Median Response Time | 8.00ms |415| 95th Percentile | 90.00ms |416| 90th Percentile | 70.00ms |417| Max Response Time | 100ms |418| Min Response Time | 1ms |419| Inter Quartile Range | 36 |420`,421 },422 {423 "route with data points, some errors",424 encodeClientTimingStats(425 &loadtest.ClientTimingStats{426 Routes: map[string]*loadtest.RouteStats{427 "/test/route/1": &loadtest.RouteStats{428 Name: "/test/route/1",429 NumHits: 20,430 NumErrors: 5,431 Duration: []float64{432 1, 2, 3, 4, 5,433 6, 7, 8, 9, 10,434 20, 40, 60, 80, 100,435 },436 },437 },438 },439 ),440 false,441 `## Loadtest Results442### Score: 134.00443The score is the average of the 95th percentile, median and interquartile ranges in the routes below.444### Routes445#### /test/route/1446| Metric | Actual |447| --- | --- |448| Hits | 20 |449| Error Rate | 25.00% |450| Mean Response Time | 23.67ms |451| Median Response Time | 8.00ms |452| 95th Percentile | 90.00ms |453`,454 `## Loadtest Results455### Score: 134.00456The score is the average of the 95th percentile, median and interquartile ranges in the routes below.457### Routes458#### /test/route/1459| Metric | Actual |460| --- | --- |461| Hits | 20 |462| Error Rate | 25.00% |463| Mean Response Time | 23.67ms |464| Median Response Time | 8.00ms |465| 95th Percentile | 90.00ms |466| 90th Percentile | 70.00ms |467| Max Response Time | 100ms |468| Min Response Time | 1ms |469| Inter Quartile Range | 36 |470`,471 },472 {473 "route without data points, all errors",474 encodeClientTimingStats(475 &loadtest.ClientTimingStats{476 Routes: map[string]*loadtest.RouteStats{477 "/test/route/1": &loadtest.RouteStats{478 Name: "/test/route/1",479 NumHits: 20,480 NumErrors: 20,481 Duration: []float64{},482 },483 },484 },485 ),486 false,487 `## Loadtest Results488### Score: 0.00489The score is the average of the 95th percentile, median and interquartile ranges in the routes below.490### Routes491#### /test/route/1492| Metric | Actual |493| --- | --- |494| Hits | 20 |495| Error Rate | 100.00% |496| Mean Response Time | 0.00ms |497| Median Response Time | 0.00ms |498| 95th Percentile | 0.00ms |499`,500 `## Loadtest Results501### Score: 0.00502The score is the average of the 95th percentile, median and interquartile ranges in the routes below.503### Routes504#### /test/route/1505| Metric | Actual |506| --- | --- |507| Hits | 20 |508| Error Rate | 100.00% |509| Mean Response Time | 0.00ms |510| Median Response Time | 0.00ms |511| 95th Percentile | 0.00ms |512| 90th Percentile | 0.00ms |513| Max Response Time | 0ms |514| Min Response Time | 0ms |515| Inter Quartile Range | 0 |516`,517 },518 {519 "multiple routes",520 encodeClientTimingStats(521 &loadtest.ClientTimingStats{522 Routes: map[string]*loadtest.RouteStats{523 "/test/route/1": &loadtest.RouteStats{524 Name: "/test/route/1",525 NumHits: 25,526 NumErrors: 10,527 Duration: []float64{528 20, 40, 60, 80, 100,529 1, 2, 3, 4, 5,530 6, 7, 8, 9, 10,531 },532 },533 "/test/route/2": &loadtest.RouteStats{534 Name: "/test/route/2",535 NumHits: 16,536 NumErrors: 0,537 Duration: []float64{538 1, 2, 3, 4, 5,539 6, 7, 8, 9, 10,540 20, 40, 60, 80, 100,541 1000,542 },543 },544 },545 },546 ),547 false,548 `## Loadtest Results549### Score: 369.00550The score is the average of the 95th percentile, median and interquartile ranges in the routes below.551### Routes552#### /test/route/1553| Metric | Actual |554| --- | --- |555| Hits | 25 |556| Error Rate | 40.00% |557| Mean Response Time | 23.67ms |558| Median Response Time | 8.00ms |559| 95th Percentile | 90.00ms |560#### /test/route/2561| Metric | Actual |562| --- | --- |563| Hits | 16 |564| Error Rate | 0.00% |565| Mean Response Time | 84.69ms |566| Median Response Time | 8.50ms |567| 95th Percentile | 550.00ms |568`,569 `## Loadtest Results570### Score: 369.00571The score is the average of the 95th percentile, median and interquartile ranges in the routes below.572### Routes573#### /test/route/1574| Metric | Actual |575| --- | --- |576| Hits | 25 |577| Error Rate | 40.00% |578| Mean Response Time | 23.67ms |579| Median Response Time | 8.00ms |580| 95th Percentile | 90.00ms |581| 90th Percentile | 70.00ms |582| Max Response Time | 100ms |583| Min Response Time | 1ms |584| Inter Quartile Range | 36 |585#### /test/route/2586| Metric | Actual |587| --- | --- |588| Hits | 16 |589| Error Rate | 0.00% |590| Mean Response Time | 84.69ms |591| Median Response Time | 8.50ms |592| 95th Percentile | 550.00ms |593| 90th Percentile | 90.00ms |594| Max Response Time | 1000ms |595| Min Response Time | 1ms |596| Inter Quartile Range | 45.5 |597`,598 },599 }600 for _, testCase := range testCases {601 t.Run(testCase.Description, func(t *testing.T) {602 test := func(t *testing.T, verbose bool, expectedOutput string) {603 output := &strings.Builder{}604 config := &ltparse.ResultsConfig{605 Input: strings.NewReader(testCase.Input),606 BaselineInput: nil,607 Output: output,...

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server_stats.go

Source:server_stats.go Github

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...5 "github.com/nienie/marathon/stats"6 "github.com/rcrowley/go-metrics"7)8const (9 tenPercentile float64 = 1010 twentyFivePercentile float64 = 2511 fiftyPercentile float64 = 5012 seventyFivePercentile float64 = 7513 ninetyPercentile float64 = 9014 ninetyFivePercentile float64 = 9515 ninetyEightPercentile float64 = 9816 ninetyNinePercentile float64 = 9917 ninetyNinePointFivePercentile float64 = 99.518)19const (20 //DefaultConnectionFailureCountThreshold ...21 DefaultConnectionFailureCountThreshold = 522 //DefaultCircuitTrippedTimeoutFactor ...23 DefaultCircuitTrippedTimeoutFactor = 1024 //DefaultMaxCircuitTrippedTimeout ...25 DefaultMaxCircuitTrippedTimeout = 10 * time.Second26 //DefaultActiveRequestsCountTimeout ...27 DefaultActiveRequestsCountTimeout = 30 * time.Second28 //DefaultRequestCountsSlidingWindowSize ...29 DefaultRequestCountsSlidingWindowSize = 300 //store 300 seconds' data30 //DefaultResponseTimeWindowSize ...31 DefaultResponseTimeWindowSize = 300 //store 300 seconds' data32)33//Stats ...34type Stats struct {35 Server *Server36 ConnectionFailureThreshold int37 CircuitTrippedTimeoutFactor int38 MaxCircuitTrippedTimeout time.Duration39 ActiveRequestsCountTimeout time.Duration40 RequestCountsSlidingWindowSize int41 ResponseTimeWindowSize int42 //for stats43 totalRequests metrics.Counter44 activeRequestsCount metrics.Counter45 openConnectionsCount metrics.Counter46 successiveConnectionFailureCount metrics.Counter47 totalCircuitBreakerBlackOutPeriod int64 //nanoseconds48 //record time49 lastConnectionFailedTimestamp int6450 lastActiveRequestsCountChangeTimestamp int6451 firstConnectionTimestamp int6452 lastAccessedTimestamp int6453 //stats objects54 responseTimeDist *stats.Distribution //to stats in the overall time55 responseTimeInWindow *stats.RollingSample // to stats in a recent time-slice56 serverFailureCounts *stats.RollingCounter //server failure counts in a sliding window time57 requestCountInWindow *stats.RollingCounter //request count in a window time58}59//NewDefaultServerStats ...60func NewDefaultServerStats() *Stats {61 return &Stats{62 ConnectionFailureThreshold: DefaultConnectionFailureCountThreshold,63 CircuitTrippedTimeoutFactor: DefaultCircuitTrippedTimeoutFactor,64 MaxCircuitTrippedTimeout: DefaultMaxCircuitTrippedTimeout,65 ActiveRequestsCountTimeout: DefaultActiveRequestsCountTimeout,66 RequestCountsSlidingWindowSize: DefaultRequestCountsSlidingWindowSize,67 ResponseTimeWindowSize: DefaultResponseTimeWindowSize,68 responseTimeDist: stats.NewDistribution(),69 totalRequests: &metrics.StandardCounter{},70 activeRequestsCount: &metrics.StandardCounter{},71 openConnectionsCount: &metrics.StandardCounter{},72 successiveConnectionFailureCount: &metrics.StandardCounter{},73 }74}75//Initialize ...76func (o *Stats) Initialize(svr *Server) {77 o.Server = svr78 o.serverFailureCounts = stats.NewRollingCounter(o.RequestCountsSlidingWindowSize)79 o.requestCountInWindow = stats.NewRollingCounter(o.RequestCountsSlidingWindowSize)80 o.responseTimeInWindow = stats.NewRollingSample(o.ResponseTimeWindowSize)81}82//Close ...83func (o *Stats) Close() {}84//AddToFailureCount increment the count of failure for this server85func (o *Stats) AddToFailureCount() {86 o.serverFailureCounts.Inc(int64(1))87}88//GetFailureCount returns the count of failures in the current window.89func (o *Stats) GetFailureCount() int64 {90 return o.serverFailureCounts.Count()91}92//NoteResponseTime call this method to note the response time after every request.93func (o *Stats) NoteResponseTime(msecs float64) {94 o.responseTimeDist.NoteValue(msecs)95 o.responseTimeInWindow.UpdateValue(int64(msecs))96}97//IncrementNumRequests note the total number of requests.98func (o *Stats) IncrementNumRequests() {99 o.totalRequests.Inc(int64(1))100}101//IncrementActiveRequestsCount note the active number of requests.102func (o *Stats) IncrementActiveRequestsCount() {103 o.activeRequestsCount.Inc(int64(1))104 o.requestCountInWindow.Inc(int64(1))105 currentTime := time.Now().UnixNano()106 atomic.StoreInt64(&o.lastActiveRequestsCountChangeTimestamp, currentTime)107 atomic.StoreInt64(&o.lastAccessedTimestamp, currentTime)108 if o.firstConnectionTimestamp == int64(0) {109 atomic.StoreInt64(&o.firstConnectionTimestamp, currentTime)110 }111}112//DecrementActiveRequestsCount ...113func (o *Stats) DecrementActiveRequestsCount() {114 o.activeRequestsCount.Dec(int64(1))115 if o.activeRequestsCount.Count() < int64(0) {116 o.activeRequestsCount.Clear()117 }118 atomic.StoreInt64(&o.lastActiveRequestsCountChangeTimestamp, time.Now().UnixNano())119}120//GetActiveRequestsCount ...121func (o *Stats) GetActiveRequestsCount(currentTime time.Duration) int64 {122 count := o.activeRequestsCount.Count()123 if currentTime-time.Duration(o.lastActiveRequestsCountChangeTimestamp) > o.ActiveRequestsCountTimeout || count < 0 {124 o.activeRequestsCount.Clear()125 return 0126 }127 return count128}129//IncrementOpenConnectionsCount ...130func (o *Stats) IncrementOpenConnectionsCount() {131 o.openConnectionsCount.Inc(int64(1))132}133//DecrementOpenConnectionsCount ...134func (o *Stats) DecrementOpenConnectionsCount() {135 o.openConnectionsCount.Dec(int64(1))136 if o.openConnectionsCount.Count() < 0 {137 o.openConnectionsCount.Clear()138 }139}140//GetOpenConnectionsCount ...141func (o *Stats) GetOpenConnectionsCount() int64 {142 return o.openConnectionsCount.Count()143}144//GetMeasuredRequestsCount ...145func (o *Stats) GetMeasuredRequestsCount() int64 {146 return o.requestCountInWindow.Count()147}148func (o *Stats) getCircuitBreakerBlackoutPeriod() time.Duration {149 failureCount := o.successiveConnectionFailureCount.Count()150 if failureCount < int64(o.ConnectionFailureThreshold) {151 return time.Duration(0)152 }153 diff := failureCount - int64(o.ConnectionFailureThreshold)154 if diff > 16 {155 diff = 16156 }157 blackOutSeconds := time.Duration(int64(o.CircuitTrippedTimeoutFactor)*diff*2) * time.Second158 if blackOutSeconds > o.MaxCircuitTrippedTimeout {159 blackOutSeconds = o.MaxCircuitTrippedTimeout160 }161 return blackOutSeconds162}163func (o *Stats) getCircuitBreakerTimeout() time.Duration {164 blackOutPeriod := o.getCircuitBreakerBlackoutPeriod()165 if blackOutPeriod <= time.Duration(0) {166 return time.Duration(0)167 }168 return time.Duration(o.lastConnectionFailedTimestamp) + blackOutPeriod169}170//IsCircuitBreakerTripped ...171func (o *Stats) IsCircuitBreakerTripped(currentTime time.Duration) bool {172 circuitBreakerTimeout := o.getCircuitBreakerTimeout()173 if circuitBreakerTimeout <= time.Duration(0) {174 return false175 }176 return circuitBreakerTimeout > currentTime177}178//IncrementSuccessiveConnectionFailureCount ...179func (o *Stats) IncrementSuccessiveConnectionFailureCount() {180 atomic.StoreInt64(&o.lastConnectionFailedTimestamp, time.Now().UnixNano())181 o.successiveConnectionFailureCount.Inc(int64(1))182 atomic.AddInt64(&o.totalCircuitBreakerBlackOutPeriod, int64(o.getCircuitBreakerBlackoutPeriod()))183}184//ClearSuccessiveConnectionFailureCount ...185func (o *Stats) ClearSuccessiveConnectionFailureCount() {186 o.successiveConnectionFailureCount.Clear()187}188//GetSuccessiveConnectionCount ...189func (o *Stats) GetSuccessiveConnectionCount() int64 {190 return o.successiveConnectionFailureCount.Count()191}192//GetResponseTimeAvg gets the average total amount of time to handle a request, in milliseconds.193func (o *Stats) GetResponseTimeAvg() float64 {194 return o.responseTimeDist.GetMean()195}196//GetResponseTimeMax gets the maximum amount of time spent handling a request, in milliseconds.197func (o *Stats) GetResponseTimeMax() float64 {198 return o.responseTimeDist.GetMaximum()199}200//GetResponseTimeMin gets the minimum amount of time spent handling a request, in milliseconds.201func (o *Stats) GetResponseTimeMin() float64 {202 return o.responseTimeDist.GetMinimum()203}204//GetResponseTimeStdDev gets the standard deviation in the total amount of time spent handling a request, in milliseconds.205func (o *Stats) GetResponseTimeStdDev() float64 {206 return o.responseTimeDist.GetStdDev()207}208//GetResponseTimeAvgRecent gets the average total amount of time to handle a request in the recent time-slice, in milliseconds.209func (o *Stats) GetResponseTimeAvgRecent() float64 {210 return o.responseTimeInWindow.Mean()211}212func (o *Stats) getResponseTimePercentile(percent float64) float64 {213 return o.responseTimeInWindow.Percentile(percent / float64(100))214}215//GetResponseTime10thPercentile gets the 10-th percentile in the total amount of time spent handling a request, in milliseconds.216func (o *Stats) GetResponseTime10thPercentile() float64 {217 return o.getResponseTimePercentile(tenPercentile)218}219//GetResponseTime25thPercentile gets the 25-th percentile in the total amount of time spent handling a request, in milliseconds.220func (o *Stats) GetResponseTime25thPercentile() float64 {221 return o.getResponseTimePercentile(twentyFivePercentile)222}223//GetResponseTime50thPercentile gets the 50-th percentile in the total amount of time spent handling a request, in milliseconds.224func (o *Stats) GetResponseTime50thPercentile() float64 {225 return o.getResponseTimePercentile(fiftyPercentile)226}227//GetResponseTime75thPercentile gets the 75-th percentile in the total amount of time spent handling a request, in milliseconds.228func (o *Stats) GetResponseTime75thPercentile() float64 {229 return o.getResponseTimePercentile(seventyFivePercentile)230}231//GetResponseTime90thPercentile gets the 90-th percentile in the total amount of time spent handling a request, in milliseconds.232func (o *Stats) GetResponseTime90thPercentile() float64 {233 return o.getResponseTimePercentile(ninetyPercentile)234}235//GetResponseTime95thPercentile gets the 95-th percentile in the total amount of time spent handling a request, in milliseconds.236func (o *Stats) GetResponseTime95thPercentile() float64 {237 return o.getResponseTimePercentile(ninetyFivePercentile)238}239//GetResponseTime98thPercentile gets the 98-th percentile in the total amount of time spent handling a request, in milliseconds.240func (o *Stats) GetResponseTime98thPercentile() float64 {241 return o.getResponseTimePercentile(ninetyEightPercentile)242}243//GetResponseTime99thPercentile gets the 99-th percentile in the total amount of time spent handling a request, in milliseconds.244func (o *Stats) GetResponseTime99thPercentile() float64 {245 return o.getResponseTimePercentile(ninetyNinePercentile)246}247//GetResponseTime99point5thPercentile gets the 99.5-th percentile in the total amount of time spent handling a request, in milliseconds.248func (o *Stats) GetResponseTime99point5thPercentile() float64 {249 return o.getResponseTimePercentile(ninetyNinePointFivePercentile)250}251//GetTotalRequestsCount ...252func (o *Stats) GetTotalRequestsCount() int64 {253 return o.totalRequests.Count()254}255//GetErrorRate ...256func (o *Stats) GetErrorRate(size int) float64 {257 errorCount := o.serverFailureCounts.Sum(size)258 totalCount := o.requestCountInWindow.Sum(size)259 return float64(errorCount / totalCount)260}261//GetRecentErrorRate ...262func (o *Stats) GetRecentErrorRate() float64 {263 return o.GetErrorRate(30)...

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running_stats_test.go

Source:running_stats_test.go Github

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...18 }19 if rs.Lower() != 10.1 {20 t.Errorf("Expected %v, got %v", 10.1, rs.Lower())21 }22 if rs.Percentile(90) != 10.1 {23 t.Errorf("Expected %v, got %v", 10.1, rs.Percentile(90))24 }25 if rs.Percentile(50) != 10.1 {26 t.Errorf("Expected %v, got %v", 10.1, rs.Percentile(50))27 }28 if rs.Count() != 1 {29 t.Errorf("Expected %v, got %v", 1, rs.Count())30 }31 if rs.Variance() != 0 {32 t.Errorf("Expected %v, got %v", 0, rs.Variance())33 }34 if rs.Stddev() != 0 {35 t.Errorf("Expected %v, got %v", 0, rs.Stddev())36 }37}38// Test that duplicate values are handled correctly39func TestRunningStats_Duplicate(t *testing.T) {40 rs := RunningStats{}41 values := []float64{10.1, 10.1, 10.1, 10.1}42 for _, v := range values {43 rs.AddValue(v)44 }45 if rs.Mean() != 10.1 {46 t.Errorf("Expected %v, got %v", 10.1, rs.Mean())47 }48 if rs.Upper() != 10.1 {49 t.Errorf("Expected %v, got %v", 10.1, rs.Upper())50 }51 if rs.Lower() != 10.1 {52 t.Errorf("Expected %v, got %v", 10.1, rs.Lower())53 }54 if rs.Percentile(90) != 10.1 {55 t.Errorf("Expected %v, got %v", 10.1, rs.Percentile(90))56 }57 if rs.Percentile(50) != 10.1 {58 t.Errorf("Expected %v, got %v", 10.1, rs.Percentile(50))59 }60 if rs.Count() != 4 {61 t.Errorf("Expected %v, got %v", 4, rs.Count())62 }63 if rs.Variance() != 0 {64 t.Errorf("Expected %v, got %v", 0, rs.Variance())65 }66 if rs.Stddev() != 0 {67 t.Errorf("Expected %v, got %v", 0, rs.Stddev())68 }69}70// Test a list of sample values, returns all correct values71func TestRunningStats(t *testing.T) {72 rs := RunningStats{}73 values := []float64{10, 20, 10, 30, 20, 11, 12, 32, 45, 9, 5, 5, 5, 10, 23, 8}74 for _, v := range values {75 rs.AddValue(v)76 }77 if rs.Mean() != 15.9375 {78 t.Errorf("Expected %v, got %v", 15.9375, rs.Mean())79 }80 if rs.Upper() != 45 {81 t.Errorf("Expected %v, got %v", 45, rs.Upper())82 }83 if rs.Lower() != 5 {84 t.Errorf("Expected %v, got %v", 5, rs.Lower())85 }86 if rs.Percentile(90) != 32 {87 t.Errorf("Expected %v, got %v", 32, rs.Percentile(90))88 }89 if rs.Percentile(50) != 11 {90 t.Errorf("Expected %v, got %v", 11, rs.Percentile(50))91 }92 if rs.Count() != 16 {93 t.Errorf("Expected %v, got %v", 4, rs.Count())94 }95 if !fuzzyEqual(rs.Variance(), 124.93359, .00001) {96 t.Errorf("Expected %v, got %v", 124.93359, rs.Variance())97 }98 if !fuzzyEqual(rs.Stddev(), 11.17736, .00001) {99 t.Errorf("Expected %v, got %v", 11.17736, rs.Stddev())100 }101}102// Test that the percentile limit is respected.103func TestRunningStats_PercentileLimit(t *testing.T) {104 rs := RunningStats{}105 rs.PercLimit = 10106 values := []float64{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}107 for _, v := range values {108 rs.AddValue(v)109 }110 if rs.Count() != 11 {111 t.Errorf("Expected %v, got %v", 11, rs.Count())112 }113 if len(rs.perc) != 10 {114 t.Errorf("Expected %v, got %v", 10, len(rs.perc))115 }116}117func fuzzyEqual(a, b, epsilon float64) bool {...

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Percentile

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1import (2func main() {3 data := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}4 percentile, _ := stats.Percentile(data, 50)5 fmt.Println(percentile)6}

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Percentile

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1import (2func main() {3 data := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}4 percentile, _ := stats.Percentile(data, 50)5 fmt.Println(percentile)6}

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Percentile

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1import (2func main() {3 data := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}4 percentile, _ := stats.Percentile(data, 25)5 fmt.Println(percentile)6}7import (8func main() {9 data := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}10 median, _ := stats.Median(data)11 fmt.Println(median)12}13import (14func main() {15 data := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}16 mode, _ := stats.Mode(data)17 fmt.Println(mode)18}19import (20func main() {21 data := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}22 range, _ := stats.Range(data)23 fmt.Println(range

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Percentile

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1import (2func main() {3 mySlice := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}4 percentile, _ := stats.Percentile(mySlice, 50)5}6import (7func main() {8 mySlice := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}9 variance, _ := stats.Variance(mySlice)10}11import (12func main() {13 mySlice := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}14 stdDev, _ := stats.StandardDeviation(mySlice)15}16import (17func main() {18 mySlice := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}19 popVariance, _ := stats.PopulationVariance(mySlice)20}

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Percentile

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1import (2func main() {3 rand.Seed(time.Now().UnixNano())4 s := make([]float64, 100)5 for i := range s {6 s[i] = rand.Float64()7 }8 sort.Float64s(s)9 p, _ := stats.Percentile(s, 95)10 fmt.Println(p)11 p, _ = stats.Percentile(s[:50], 95)12 fmt.Println(p)13}14import (15func main() {16 rand.Seed(time.Now().UnixNano())17 s := make([]float64, 100)18 for i := range s {19 s[i] = rand.Float64()20 }21 sort.Float64s(s)22 p, _ := stats.PercentileNearestRank(s, 95)23 fmt.Println(p)24 p, _ = stats.PercentileNearestRank(s[:50], 95)25 fmt.Println(p)26}27import (28func main() {29 rand.Seed(time.Now().UnixNano())30 s := make([]float64, 100)31 for i := range s {32 s[i] = rand.Float64()33 }

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1import (2func main() {3 data := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}4 percentile := stat.Quantile(0.5, stat.Empirical, data, nil)5 fmt.Println("50th percentile is", percentile)6}7import (8func main() {9 data := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}10 percentile := stat.Quantile(0.9, stat.Empirical, data, nil)11 fmt.Println("90th percentile is", percentile)12}13import (14func main() {15 data := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}16 percentile := stat.Quantile(0.1, stat.Empirical, data, nil)17 fmt.Println("10th percentile is", percentile)18}19import (20func main() {21 data := []float64{1

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1import (2func main() {3 x := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}4 y := stat.Quantile(0.5, stat.Empirical, x, nil)5 fmt.Println(y)6}7import (8func main() {9 x := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}10 y := stat.Quantile(0.5, stat.Empirical, x, nil)11 fmt.Println(y)12}13import (14func main() {15 x := []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}16 y := stat.Quantile(0.5, stat.Empirical, x, nil)17 fmt.Println(y)18}19import (

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1import (2func main() {3 data := make([]float64, 1000)4 for i := 0; i < 1000; i++ {5 data[i] = rand.Float64() * 1006 }7 sort.Float64s(data)8 stats := Stats{data}9 p90 := stats.Percentile(90)10 fmt.Println(p90)11}12x = (i – 1) / (n – 1) * 10013i = (x / 100) * (n – 1) + 114i = (90 /

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