固定速率的 ScheduledExecutorService 計划沒有像預期的那樣准確

Question

我有一個 Java 項目（Java 8），它應該每 10 毫秒執行一次任務。 我使用 java ScheduledExecutorService來運行任務：

ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
executorService.scheduleAtFixedRate(new QueueTask(), 0, 10, TimeUnit.MILLISECONDS);

QueueTask擴展了Runnable並從隊列中輪詢 - 不超過 10 毫秒。 每次運行QueueTask我都會記錄“啟動 QueueTask”。

出於某種原因，根據日志，任務在同一毫秒內運行，我不明白為什么。 例如：

2022-03-09 15:24:32.362 INFO 12536 --- [pool-1-thread-1] com.example.consumer.QueueTask      : started QueueTask, uuid: 40bf7e61-66f3-4869-b5f8-43b9cac8e203, nanoTime: 311179321467600
2022-03-09 15:24:32.362 INFO 12536 --- [pool-1-thread-1] com.example.consumer.QueueTask      : started QueueTask, uuid: a63b814f-2016-4b1a-b17b-d870e4b38c64, nanoTime: 311179322025300
2022-03-09 15:24:32.362 INFO 12536 --- [pool-1-thread-1] com.example.consumer.QueueTask      : started QueueTask, uuid: 17879b1f-96ed-4236-9902-ff98fc772b5a, nanoTime: 311179322376100

我不明白這是怎么回事。 我有一個線程計划每 10 毫秒運行一次，有時它會在同一毫秒運行。 順便說一下，它並不是每 10 毫秒運行一次，據我所知，調度程序不可能 100% 准確，但它不應該這樣運行。 我還嘗試在線程池中使用多個線程，但沒有用。

您可以看到使用System.nanoTime()打印的納秒在日志之間是不同的，但第一個和第二個日志之間的差異是： 350800納秒，即0.3508毫秒。 所以這意味着任務不會間隔 10 毫秒運行。

Answer 1

請注意，Java 文檔中提到的executorService.scheduleAtFixedRate()會將任務提交給線程，但這並不意味着線程會在給定的時間內准確執行任務。

您也不能保證任務的執行時間，第一個任務可能超過 10 毫秒，然后少於 10 毫秒。

所以你每10毫秒就會有一個新任務提交給你的單線程，這些任務的執行時間不固定，可能多於或少於10毫秒，所以任務池中的任務數量會更多比執行的任務多，您的線程將嘗試打印所有這些任務，這就是為什么您會看到它在那里同時打印的原因。 output 不能保證，你不能指望你的情況，它還取決於你的機器和你的線程調度程序。

Java 方法scheduleAtFixedRate的文檔：

提交一個周期性動作，該動作在給定的初始延遲后首先啟用，然后在給定的周期內啟用； 也就是說，執行將在 initialDelay 之后開始，然后是 initialDelay + period，然后是 initialDelay + 2 * period，依此類推。

Answer 2

短跑彌補長跑

我構建了一些代碼來試驗調度。

我所看到的是，為了彌補一些運行時間過長（超過 10 毫秒）的運行時間，有些運行時間太短（不到 10 毫秒）。

對於我運行的每 100 次迭代，我得到大約一半不到 10 毫秒，大約一半超過 10 毫秒，總平均值非常接近 10 毫秒。 例如，如果 100 次迭代中有 47 次運行時間較長，則有 53 次運行時間較短。 如果 46 長，則 54 短，依此類推。 細讀結果數據時，多空運行似乎是交錯的。

鑒於ScheduledExecutorService#scheduleAtFixedRate的文檔，這個結果是有道理的。 如果您要求以 10 毫秒為增量，服務會努力達到自開始以來每 10 毫秒的目標，而不是自上次迭代完成后的 10 毫秒。 這種努力包括通過縮短其他人來補償長跑。

但也許我錯了。 要么是我的代碼有問題，要么是我的推理。 請根據需要糾正我。

package work.basil.threading;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;

public class TenMs
{
    public static void main ( String[] args )
    {
        // Setup experiment.
        System.out.println( "INFO - Demo start. " + System.nanoTime() );
        final int runDemoForMilliseconds = 1000;
        final int iterationMillis = 10;
        final int initialCapacity = ( runDemoForMilliseconds / iterationMillis ) + 2;
        final AtomicLong momentOfExecution = new AtomicLong( System.nanoTime() );
        record Moment( long then , long now , long elapsed )
        {
            @Override
            public String toString ( )
            {
                return "Moment[" + String.join( "|" , "then=" , Long.toString( this.then ) , "now=" , Long.toString( this.now ) , "elapsed=" , Long.toString( this.elapsed ) ,
                        "elapsed ms = " + TimeUnit.MILLISECONDS.convert( this.elapsed , TimeUnit.NANOSECONDS ) ) + "]";
            }
        }
        final List < Moment > moments = new ArrayList <>( initialCapacity );
        final Runnable task = ( ) -> {
            long then = momentOfExecution.getAndSet( System.nanoTime() );
            long now = momentOfExecution.get();
            moments.add( new Moment( then , now , ( now - then ) ) );
            //try { Thread.sleep( 5  ); } catch ( InterruptedException e ) { throw new RuntimeException( e ); }
        };

        // Run experiment.
        final ScheduledExecutorService ses = Executors.newSingleThreadScheduledExecutor();
        ses.scheduleAtFixedRate( task , 0 , 10 , TimeUnit.MILLISECONDS );
        //ses.scheduleWithFixedDelay( task , 0 , 10 , TimeUnit.MILLISECONDS );
        try { Thread.sleep( runDemoForMilliseconds ); } catch ( InterruptedException e ) { throw new RuntimeException( e ); }
        ses.shutdownNow();
        try { ses.awaitTermination( runDemoForMilliseconds * 2 , TimeUnit.MILLISECONDS ); }catch ( InterruptedException e ) { throw new RuntimeException( e ); }

        // Analyze results of experiment.
        moments.remove( 0 ); // Discard first run, as it involves the startup code's delay.
        long averageElapsedNanos = ( long ) moments.stream().mapToLong( Moment :: elapsed ).average().orElse( - 666d );
        long averageElapsedMillis = TimeUnit.MILLISECONDS.convert( averageElapsedNanos , TimeUnit.NANOSECONDS );
        System.out.println( "averageElapsedNanos = " + averageElapsedNanos );
        System.out.println( "averageElapsedMillis = " + averageElapsedMillis );

        List < Moment > under10ms = moments.stream().filter( moment -> moment.elapsed < TimeUnit.NANOSECONDS.convert( 10 , TimeUnit.MILLISECONDS ) ).toList();
        List < Moment > exactly10ms = moments.stream().filter( moment -> moment.elapsed == TimeUnit.NANOSECONDS.convert( 10 , TimeUnit.MILLISECONDS ) ).toList();
        List < Moment > over10ms = moments.stream().filter( moment -> moment.elapsed > TimeUnit.NANOSECONDS.convert( 10 , TimeUnit.MILLISECONDS ) ).toList();
        System.out.println( under10ms.size() + " under 10 ms: " + under10ms );
        System.out.println( exactly10ms.size() + " exactly 10 ms: " + exactly10ms );
        System.out.println( over10ms.size() + " over 10 ms: " + over10ms );

        System.out.println( "moments.size() = " + moments.size() );
        System.out.println( "moments = " + moments );
        System.out.println( "INFO - Demo end. " + System.nanoTime() );
    }
}

在 MacBook Pro（13 英寸，M1，2020）上運行時，M1 Apple Silicon 芯片具有 4 個效率核心和 4 個性能核心，以及 16 gigs memory。從 Java 17.0.2 上的 IntelliJ 2022.1 EAP 執行。

INFO - Demo start. 162867211907750
averageElapsedNanos = 10009907
averageElapsedMillis = 10
54 under 10 ms: [Moment[then=|162867232777375|now=|162867242202833|elapsed=|9425458|elapsed ms = 9], Moment[then=|162867252876333|now=|162867262335291|elapsed=|9458958|elapsed ms = 9], Moment[then=|162867262335291|now=|162867270992458|elapsed=|8657167|elapsed ms = 8], Moment[then=|162867283166791|now=|162867292620625|elapsed=|9453834|elapsed ms = 9], Moment[then=|162867292620625|now=|162867301683791|elapsed=|9063166|elapsed ms = 9], Moment[then=|162867313011041|now=|162867322679541|elapsed=|9668500|elapsed ms = 9], Moment[then=|162867342782791|now=|162867352760333|elapsed=|9977542|elapsed ms = 9], Moment[then=|162867372793958|now=|162867382731083|elapsed=|9937125|elapsed ms = 9], Moment[then=|162867392778750|now=|162867402749458|elapsed=|9970708|elapsed ms = 9], Moment[then=|162867402749458|now=|162867412179000|elapsed=|9429542|elapsed ms = 9], Moment[then=|162867422922208|now=|162867432750083|elapsed=|9827875|elapsed ms = 9], Moment[then=|162867452829250|now=|162867462773791|elapsed=|9944541|elapsed ms = 9], Moment[then=|162867462773791|now=|162867472772250|elapsed=|9998459|elapsed ms = 9], Moment[then=|162867472772250|now=|162867482735583|elapsed=|9963333|elapsed ms = 9], Moment[then=|162867492755833|now=|162867502739958|elapsed=|9984125|elapsed ms = 9], Moment[then=|162867522892250|now=|162867532706291|elapsed=|9814041|elapsed ms = 9], Moment[then=|162867532706291|now=|162867542669250|elapsed=|9962959|elapsed ms = 9], Moment[then=|162867552836500|now=|162867562807916|elapsed=|9971416|elapsed ms = 9], Moment[then=|162867562807916|now=|162867572736458|elapsed=|9928542|elapsed ms = 9], Moment[then=|162867572736458|now=|162867581052458|elapsed=|8316000|elapsed ms = 8], Moment[then=|162867593213708|now=|162867601604291|elapsed=|8390583|elapsed ms = 8], Moment[then=|162867613152250|now=|162867622672250|elapsed=|9520000|elapsed ms = 9], Moment[then=|162867632754041|now=|162867642711791|elapsed=|9957750|elapsed ms = 9], Moment[then=|162867652745125|now=|162867660950750|elapsed=|8205625|elapsed ms = 8], Moment[then=|162867673205416|now=|162867682648458|elapsed=|9443042|elapsed ms = 9], Moment[then=|162867702750208|now=|162867712719166|elapsed=|9968958|elapsed ms = 9], Moment[then=|162867722770291|now=|162867732742083|elapsed=|9971792|elapsed ms = 9], Moment[then=|162867742745750|now=|162867752721166|elapsed=|9975416|elapsed ms = 9], Moment[then=|162867752721166|now=|162867762038083|elapsed=|9316917|elapsed ms = 9], Moment[then=|162867772938291|now=|162867782701208|elapsed=|9762917|elapsed ms = 9], Moment[then=|162867792819250|now=|162867802733958|elapsed=|9914708|elapsed ms = 9], Moment[then=|162867812754916|now=|162867822730166|elapsed=|9975250|elapsed ms = 9], Moment[then=|162867852834958|now=|162867862754000|elapsed=|9919042|elapsed ms = 9], Moment[then=|162867872797875|now=|162867882771166|elapsed=|9973291|elapsed ms = 9], Moment[then=|162867882771166|now=|162867892719333|elapsed=|9948167|elapsed ms = 9], Moment[then=|162867892719333|now=|162867901537291|elapsed=|8817958|elapsed ms = 8], Moment[then=|162867913086583|now=|162867922725166|elapsed=|9638583|elapsed ms = 9], Moment[then=|162867932766916|now=|162867942723708|elapsed=|9956792|elapsed ms = 9], Moment[then=|162867942723708|now=|162867950987166|elapsed=|8263458|elapsed ms = 8], Moment[then=|162867963205000|now=|162867972662291|elapsed=|9457291|elapsed ms = 9], Moment[then=|162868002963166|now=|162868011406875|elapsed=|8443709|elapsed ms = 8], Moment[then=|162868023188125|now=|162868031231500|elapsed=|8043375|elapsed ms = 8], Moment[then=|162868043275291|now=|162868052630166|elapsed=|9354875|elapsed ms = 9], Moment[then=|162868062829125|now=|162868072762000|elapsed=|9932875|elapsed ms = 9], Moment[then=|162868082837791|now=|162868092819500|elapsed=|9981709|elapsed ms = 9], Moment[then=|162868092819500|now=|162868102766750|elapsed=|9947250|elapsed ms = 9], Moment[then=|162868112903958|now=|162868121689041|elapsed=|8785083|elapsed ms = 8], Moment[then=|162868133048041|now=|162868142725875|elapsed=|9677834|elapsed ms = 9], Moment[then=|162868142725875|now=|162868151383958|elapsed=|8658083|elapsed ms = 8], Moment[then=|162868163148958|now=|162868172674750|elapsed=|9525792|elapsed ms = 9], Moment[then=|162868182812916|now=|162868192789250|elapsed=|9976334|elapsed ms = 9], Moment[then=|162868192789250|now=|162868202785916|elapsed=|9996666|elapsed ms = 9], Moment[then=|162868202785916|now=|162868212745625|elapsed=|9959709|elapsed ms = 9], Moment[then=|162868212745625|now=|162868222741375|elapsed=|9995750|elapsed ms = 9]]
0 exactly 10 ms: []
46 over 10 ms: [Moment[then=|162867221750666|now=|162867232777375|elapsed=|11026709|elapsed ms = 11], Moment[then=|162867242202833|now=|162867252876333|elapsed=|10673500|elapsed ms = 10], Moment[then=|162867270992458|now=|162867283166791|elapsed=|12174333|elapsed ms = 12], Moment[then=|162867301683791|now=|162867313011041|elapsed=|11327250|elapsed ms = 11], Moment[then=|162867322679541|now=|162867332759166|elapsed=|10079625|elapsed ms = 10], Moment[then=|162867332759166|now=|162867342782791|elapsed=|10023625|elapsed ms = 10], Moment[then=|162867352760333|now=|162867362760500|elapsed=|10000167|elapsed ms = 10], Moment[then=|162867362760500|now=|162867372793958|elapsed=|10033458|elapsed ms = 10], Moment[then=|162867382731083|now=|162867392778750|elapsed=|10047667|elapsed ms = 10], Moment[then=|162867412179000|now=|162867422922208|elapsed=|10743208|elapsed ms = 10], Moment[then=|162867432750083|now=|162867442783500|elapsed=|10033417|elapsed ms = 10], Moment[then=|162867442783500|now=|162867452829250|elapsed=|10045750|elapsed ms = 10], Moment[then=|162867482735583|now=|162867492755833|elapsed=|10020250|elapsed ms = 10], Moment[then=|162867502739958|now=|162867512789125|elapsed=|10049167|elapsed ms = 10], Moment[then=|162867512789125|now=|162867522892250|elapsed=|10103125|elapsed ms = 10], Moment[then=|162867542669250|now=|162867552836500|elapsed=|10167250|elapsed ms = 10], Moment[then=|162867581052458|now=|162867593213708|elapsed=|12161250|elapsed ms = 12], Moment[then=|162867601604291|now=|162867613152250|elapsed=|11547959|elapsed ms = 11], Moment[then=|162867622672250|now=|162867632754041|elapsed=|10081791|elapsed ms = 10], Moment[then=|162867642711791|now=|162867652745125|elapsed=|10033334|elapsed ms = 10], Moment[then=|162867660950750|now=|162867673205416|elapsed=|12254666|elapsed ms = 12], Moment[then=|162867682648458|now=|162867692740291|elapsed=|10091833|elapsed ms = 10], Moment[then=|162867692740291|now=|162867702750208|elapsed=|10009917|elapsed ms = 10], Moment[then=|162867712719166|now=|162867722770291|elapsed=|10051125|elapsed ms = 10], Moment[then=|162867732742083|now=|162867742745750|elapsed=|10003667|elapsed ms = 10], Moment[then=|162867762038083|now=|162867772938291|elapsed=|10900208|elapsed ms = 10], Moment[then=|162867782701208|now=|162867792819250|elapsed=|10118042|elapsed ms = 10], Moment[then=|162867802733958|now=|162867812754916|elapsed=|10020958|elapsed ms = 10], Moment[then=|162867822730166|now=|162867832762791|elapsed=|10032625|elapsed ms = 10], Moment[then=|162867832762791|now=|162867842782541|elapsed=|10019750|elapsed ms = 10], Moment[then=|162867842782541|now=|162867852834958|elapsed=|10052417|elapsed ms = 10], Moment[then=|162867862754000|now=|162867872797875|elapsed=|10043875|elapsed ms = 10], Moment[then=|162867901537291|now=|162867913086583|elapsed=|11549292|elapsed ms = 11], Moment[then=|162867922725166|now=|162867932766916|elapsed=|10041750|elapsed ms = 10], Moment[then=|162867950987166|now=|162867963205000|elapsed=|12217834|elapsed ms = 12], Moment[then=|162867972662291|now=|162867982797833|elapsed=|10135542|elapsed ms = 10], Moment[then=|162867982797833|now=|162867992885583|elapsed=|10087750|elapsed ms = 10], Moment[then=|162867992885583|now=|162868002963166|elapsed=|10077583|elapsed ms = 10], Moment[then=|162868011406875|now=|162868023188125|elapsed=|11781250|elapsed ms = 11], Moment[then=|162868031231500|now=|162868043275291|elapsed=|12043791|elapsed ms = 12], Moment[then=|162868052630166|now=|162868062829125|elapsed=|10198959|elapsed ms = 10], Moment[then=|162868072762000|now=|162868082837791|elapsed=|10075791|elapsed ms = 10], Moment[then=|162868102766750|now=|162868112903958|elapsed=|10137208|elapsed ms = 10], Moment[then=|162868121689041|now=|162868133048041|elapsed=|11359000|elapsed ms = 11], Moment[then=|162868151383958|now=|162868163148958|elapsed=|11765000|elapsed ms = 11], Moment[then=|162868172674750|now=|162868182812916|elapsed=|10138166|elapsed ms = 10]]
moments.size() = 100
moments = [Moment[then=|162867221750666|now=|162867232777375|elapsed=|11026709|elapsed ms = 11], Moment[then=|162867232777375|now=|162867242202833|elapsed=|9425458|elapsed ms = 9], Moment[then=|162867242202833|now=|162867252876333|elapsed=|10673500|elapsed ms = 10], Moment[then=|162867252876333|now=|162867262335291|elapsed=|9458958|elapsed ms = 9], Moment[then=|162867262335291|now=|162867270992458|elapsed=|8657167|elapsed ms = 8], Moment[then=|162867270992458|now=|162867283166791|elapsed=|12174333|elapsed ms = 12], Moment[then=|162867283166791|now=|162867292620625|elapsed=|9453834|elapsed ms = 9], Moment[then=|162867292620625|now=|162867301683791|elapsed=|9063166|elapsed ms = 9], Moment[then=|162867301683791|now=|162867313011041|elapsed=|11327250|elapsed ms = 11], Moment[then=|162867313011041|now=|162867322679541|elapsed=|9668500|elapsed ms = 9], Moment[then=|162867322679541|now=|162867332759166|elapsed=|10079625|elapsed ms = 10], Moment[then=|162867332759166|now=|162867342782791|elapsed=|10023625|elapsed ms = 10], Moment[then=|162867342782791|now=|162867352760333|elapsed=|9977542|elapsed ms = 9], Moment[then=|162867352760333|now=|162867362760500|elapsed=|10000167|elapsed ms = 10], Moment[then=|162867362760500|now=|162867372793958|elapsed=|10033458|elapsed ms = 10], Moment[then=|162867372793958|now=|162867382731083|elapsed=|9937125|elapsed ms = 9], Moment[then=|162867382731083|now=|162867392778750|elapsed=|10047667|elapsed ms = 10], Moment[then=|162867392778750|now=|162867402749458|elapsed=|9970708|elapsed ms = 9], Moment[then=|162867402749458|now=|162867412179000|elapsed=|9429542|elapsed ms = 9], Moment[then=|162867412179000|now=|162867422922208|elapsed=|10743208|elapsed ms = 10], Moment[then=|162867422922208|now=|162867432750083|elapsed=|9827875|elapsed ms = 9], Moment[then=|162867432750083|now=|162867442783500|elapsed=|10033417|elapsed ms = 10], Moment[then=|162867442783500|now=|162867452829250|elapsed=|10045750|elapsed ms = 10], Moment[then=|162867452829250|now=|162867462773791|elapsed=|9944541|elapsed ms = 9], Moment[then=|162867462773791|now=|162867472772250|elapsed=|9998459|elapsed ms = 9], Moment[then=|162867472772250|now=|162867482735583|elapsed=|9963333|elapsed ms = 9], Moment[then=|162867482735583|now=|162867492755833|elapsed=|10020250|elapsed ms = 10], Moment[then=|162867492755833|now=|162867502739958|elapsed=|9984125|elapsed ms = 9], Moment[then=|162867502739958|now=|162867512789125|elapsed=|10049167|elapsed ms = 10], Moment[then=|162867512789125|now=|162867522892250|elapsed=|10103125|elapsed ms = 10], Moment[then=|162867522892250|now=|162867532706291|elapsed=|9814041|elapsed ms = 9], Moment[then=|162867532706291|now=|162867542669250|elapsed=|9962959|elapsed ms = 9], Moment[then=|162867542669250|now=|162867552836500|elapsed=|10167250|elapsed ms = 10], Moment[then=|162867552836500|now=|162867562807916|elapsed=|9971416|elapsed ms = 9], Moment[then=|162867562807916|now=|162867572736458|elapsed=|9928542|elapsed ms = 9], Moment[then=|162867572736458|now=|162867581052458|elapsed=|8316000|elapsed ms = 8], Moment[then=|162867581052458|now=|162867593213708|elapsed=|12161250|elapsed ms = 12], Moment[then=|162867593213708|now=|162867601604291|elapsed=|8390583|elapsed ms = 8], Moment[then=|162867601604291|now=|162867613152250|elapsed=|11547959|elapsed ms = 11], Moment[then=|162867613152250|now=|162867622672250|elapsed=|9520000|elapsed ms = 9], Moment[then=|162867622672250|now=|162867632754041|elapsed=|10081791|elapsed ms = 10], Moment[then=|162867632754041|now=|162867642711791|elapsed=|9957750|elapsed ms = 9], Moment[then=|162867642711791|now=|162867652745125|elapsed=|10033334|elapsed ms = 10], Moment[then=|162867652745125|now=|162867660950750|elapsed=|8205625|elapsed ms = 8], Moment[then=|162867660950750|now=|162867673205416|elapsed=|12254666|elapsed ms = 12], Moment[then=|162867673205416|now=|162867682648458|elapsed=|9443042|elapsed ms = 9], Moment[then=|162867682648458|now=|162867692740291|elapsed=|10091833|elapsed ms = 10], Moment[then=|162867692740291|now=|162867702750208|elapsed=|10009917|elapsed ms = 10], Moment[then=|162867702750208|now=|162867712719166|elapsed=|9968958|elapsed ms = 9], Moment[then=|162867712719166|now=|162867722770291|elapsed=|10051125|elapsed ms = 10], Moment[then=|162867722770291|now=|162867732742083|elapsed=|9971792|elapsed ms = 9], Moment[then=|162867732742083|now=|162867742745750|elapsed=|10003667|elapsed ms = 10], Moment[then=|162867742745750|now=|162867752721166|elapsed=|9975416|elapsed ms = 9], Moment[then=|162867752721166|now=|162867762038083|elapsed=|9316917|elapsed ms = 9], Moment[then=|162867762038083|now=|162867772938291|elapsed=|10900208|elapsed ms = 10], Moment[then=|162867772938291|now=|162867782701208|elapsed=|9762917|elapsed ms = 9], Moment[then=|162867782701208|now=|162867792819250|elapsed=|10118042|elapsed ms = 10], Moment[then=|162867792819250|now=|162867802733958|elapsed=|9914708|elapsed ms = 9], Moment[then=|162867802733958|now=|162867812754916|elapsed=|10020958|elapsed ms = 10], Moment[then=|162867812754916|now=|162867822730166|elapsed=|9975250|elapsed ms = 9], Moment[then=|162867822730166|now=|162867832762791|elapsed=|10032625|elapsed ms = 10], Moment[then=|162867832762791|now=|162867842782541|elapsed=|10019750|elapsed ms = 10], Moment[then=|162867842782541|now=|162867852834958|elapsed=|10052417|elapsed ms = 10], Moment[then=|162867852834958|now=|162867862754000|elapsed=|9919042|elapsed ms = 9], Moment[then=|162867862754000|now=|162867872797875|elapsed=|10043875|elapsed ms = 10], Moment[then=|162867872797875|now=|162867882771166|elapsed=|9973291|elapsed ms = 9], Moment[then=|162867882771166|now=|162867892719333|elapsed=|9948167|elapsed ms = 9], Moment[then=|162867892719333|now=|162867901537291|elapsed=|8817958|elapsed ms = 8], Moment[then=|162867901537291|now=|162867913086583|elapsed=|11549292|elapsed ms = 11], Moment[then=|162867913086583|now=|162867922725166|elapsed=|9638583|elapsed ms = 9], Moment[then=|162867922725166|now=|162867932766916|elapsed=|10041750|elapsed ms = 10], Moment[then=|162867932766916|now=|162867942723708|elapsed=|9956792|elapsed ms = 9], Moment[then=|162867942723708|now=|162867950987166|elapsed=|8263458|elapsed ms = 8], Moment[then=|162867950987166|now=|162867963205000|elapsed=|12217834|elapsed ms = 12], Moment[then=|162867963205000|now=|162867972662291|elapsed=|9457291|elapsed ms = 9], Moment[then=|162867972662291|now=|162867982797833|elapsed=|10135542|elapsed ms = 10], Moment[then=|162867982797833|now=|162867992885583|elapsed=|10087750|elapsed ms = 10], Moment[then=|162867992885583|now=|162868002963166|elapsed=|10077583|elapsed ms = 10], Moment[then=|162868002963166|now=|162868011406875|elapsed=|8443709|elapsed ms = 8], Moment[then=|162868011406875|now=|162868023188125|elapsed=|11781250|elapsed ms = 11], Moment[then=|162868023188125|now=|162868031231500|elapsed=|8043375|elapsed ms = 8], Moment[then=|162868031231500|now=|162868043275291|elapsed=|12043791|elapsed ms = 12], Moment[then=|162868043275291|now=|162868052630166|elapsed=|9354875|elapsed ms = 9], Moment[then=|162868052630166|now=|162868062829125|elapsed=|10198959|elapsed ms = 10], Moment[then=|162868062829125|now=|162868072762000|elapsed=|9932875|elapsed ms = 9], Moment[then=|162868072762000|now=|162868082837791|elapsed=|10075791|elapsed ms = 10], Moment[then=|162868082837791|now=|162868092819500|elapsed=|9981709|elapsed ms = 9], Moment[then=|162868092819500|now=|162868102766750|elapsed=|9947250|elapsed ms = 9], Moment[then=|162868102766750|now=|162868112903958|elapsed=|10137208|elapsed ms = 10], Moment[then=|162868112903958|now=|162868121689041|elapsed=|8785083|elapsed ms = 8], Moment[then=|162868121689041|now=|162868133048041|elapsed=|11359000|elapsed ms = 11], Moment[then=|162868133048041|now=|162868142725875|elapsed=|9677834|elapsed ms = 9], Moment[then=|162868142725875|now=|162868151383958|elapsed=|8658083|elapsed ms = 8], Moment[then=|162868151383958|now=|162868163148958|elapsed=|11765000|elapsed ms = 11], Moment[then=|162868163148958|now=|162868172674750|elapsed=|9525792|elapsed ms = 9], Moment[then=|162868172674750|now=|162868182812916|elapsed=|10138166|elapsed ms = 10], Moment[then=|162868182812916|now=|162868192789250|elapsed=|9976334|elapsed ms = 9], Moment[then=|162868192789250|now=|162868202785916|elapsed=|9996666|elapsed ms = 9], Moment[then=|162868202785916|now=|162868212745625|elapsed=|9959709|elapsed ms = 9], Moment[then=|162868212745625|now=|162868222741375|elapsed=|9995750|elapsed ms = 9]]
INFO - Demo end. 162868252016666