aboutsummaryrefslogtreecommitdiffstats
path: root/library/cpp/messagebus/test/perftest/perftest.cpp
blob: d2dd0e408c0d746709c897abfd0699dbf43a7111 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
#include "simple_proto.h" 

#include <library/cpp/messagebus/test/perftest/messages.pb.h>

#include <library/cpp/messagebus/text_utils.h>
#include <library/cpp/messagebus/thread_extra.h>
#include <library/cpp/messagebus/ybus.h>
#include <library/cpp/messagebus/oldmodule/module.h>
#include <library/cpp/messagebus/protobuf/ybusbuf.h>
#include <library/cpp/messagebus/www/www.h>

#include <library/cpp/deprecated/threadable/threadable.h>
#include <library/cpp/execprofile/profile.h>
#include <library/cpp/getopt/opt.h>
#include <library/cpp/lwtrace/start.h>
#include <library/cpp/sighandler/async_signals_handler.h>
#include <library/cpp/threading/future/legacy_future.h>

#include <util/generic/ptr.h> 
#include <util/generic/string.h>
#include <util/generic/vector.h>
#include <util/generic/yexception.h> 
#include <util/random/random.h>
#include <util/stream/file.h> 
#include <util/stream/output.h> 
#include <util/stream/str.h> 
#include <util/string/split.h> 
#include <util/system/event.h> 
#include <util/system/sysstat.h> 
#include <util/system/thread.h> 
#include <util/thread/lfqueue.h> 

#include <signal.h> 
#include <stdlib.h> 

using namespace NBus;

///////////////////////////////////////////////////////
/// \brief Configuration parameters of the test

const int DEFAULT_PORT = 55666;

struct TPerftestConfig {
    TString Nodes; ///< node1:port1,node2:port2
    int ClientCount;
    int MessageSize; ///< size of message to send
    int Delay;       ///< server delay (milliseconds)
    float Failure;   ///< simulated failure rate
    int ServerPort;
    int Run;
    bool ServerUseModules;
    bool ExecuteOnMessageInWorkerPool;
    bool ExecuteOnReplyInWorkerPool;
    bool UseCompression;
    bool Profile;
    unsigned WwwPort;

    TPerftestConfig();

    void Print() {
        fprintf(stderr, "ClientCount=%d\n", ClientCount);
        fprintf(stderr, "ServerPort=%d\n", ServerPort);
        fprintf(stderr, "Delay=%d usecs\n", Delay);
        fprintf(stderr, "MessageSize=%d bytes\n", MessageSize);
        fprintf(stderr, "Failure=%.3f%%\n", Failure * 100.0);
        fprintf(stderr, "Runtime=%d seconds\n", Run);
        fprintf(stderr, "ServerUseModules=%s\n", ServerUseModules ? "true" : "false");
        fprintf(stderr, "ExecuteOnMessageInWorkerPool=%s\n", ExecuteOnMessageInWorkerPool ? "true" : "false");
        fprintf(stderr, "ExecuteOnReplyInWorkerPool=%s\n", ExecuteOnReplyInWorkerPool ? "true" : "false");
        fprintf(stderr, "UseCompression=%s\n", UseCompression ? "true" : "false");
        fprintf(stderr, "Profile=%s\n", Profile ? "true" : "false");
        fprintf(stderr, "WwwPort=%u\n", WwwPort);
    }
};

extern TPerftestConfig* TheConfig;
extern bool TheExit;

TVector<TNetAddr> ServerAddresses;

struct TConfig {
    TBusQueueConfig ServerQueueConfig;
    TBusQueueConfig ClientQueueConfig;
    TBusServerSessionConfig ServerSessionConfig;
    TBusClientSessionConfig ClientSessionConfig;
    bool SimpleProtocol;

private:
    void ConfigureDefaults(TBusQueueConfig& config) {
        config.NumWorkers = 4;
    }

    void ConfigureDefaults(TBusSessionConfig& config) {
        config.MaxInFlight = 10000;
        config.SendTimeout = TDuration::Seconds(20).MilliSeconds();
        config.TotalTimeout = TDuration::Seconds(60).MilliSeconds();
    }

public:
    TConfig()
        : SimpleProtocol(false)
    {
        ConfigureDefaults(ServerQueueConfig);
        ConfigureDefaults(ClientQueueConfig);
        ConfigureDefaults(ServerSessionConfig);
        ConfigureDefaults(ClientSessionConfig);
    }

    void Print() {
        // TODO: do not print server if only client and vice verse
        Cerr << "server queue config:\n";
        Cerr << IndentText(ServerQueueConfig.PrintToString());
        Cerr << "server session config:" << Endl;
        Cerr << IndentText(ServerSessionConfig.PrintToString());
        Cerr << "client queue config:\n";
        Cerr << IndentText(ClientQueueConfig.PrintToString());
        Cerr << "client session config:" << Endl;
        Cerr << IndentText(ClientSessionConfig.PrintToString());
        Cerr << "simple protocol: " << SimpleProtocol << "\n";
    }
};

TConfig Config;

////////////////////////////////////////////////////////////////
/// \brief Fast message

using TPerftestRequest = TBusBufferMessage<TPerftestRequestRecord, 77>;
using TPerftestResponse = TBusBufferMessage<TPerftestResponseRecord, 79>;

static size_t RequestSize() {
    return RandomNumber<size_t>(TheConfig->MessageSize * 2 + 1);
}

TAutoPtr<TBusMessage> NewRequest() {
    if (Config.SimpleProtocol) {
        TAutoPtr<TSimpleMessage> r(new TSimpleMessage);
        r->SetCompressed(TheConfig->UseCompression);
        r->Payload = 10;
        return r.Release();
    } else {
        TAutoPtr<TPerftestRequest> r(new TPerftestRequest);
        r->SetCompressed(TheConfig->UseCompression);
        // TODO: use random content for better compression test
        r->Record.SetData(TString(RequestSize(), '?'));
        return r.Release();
    }
}

void CheckRequest(TPerftestRequest* request) {
    const TString& data = request->Record.GetData();
    for (size_t i = 0; i != data.size(); ++i) {
        Y_VERIFY(data.at(i) == '?', "must be question mark");
    }
}

TAutoPtr<TPerftestResponse> NewResponse(TPerftestRequest* request) {
    TAutoPtr<TPerftestResponse> r(new TPerftestResponse);
    r->SetCompressed(TheConfig->UseCompression);
    r->Record.SetData(TString(request->Record.GetData().size(), '.'));
    return r;
}

void CheckResponse(TPerftestResponse* response) {
    const TString& data = response->Record.GetData();
    for (size_t i = 0; i != data.size(); ++i) {
        Y_VERIFY(data.at(i) == '.', "must be dot");
    }
}

////////////////////////////////////////////////////////////////////
/// \brief Fast protocol that common between client and server
class TPerftestProtocol: public TBusBufferProtocol {
public:
    TPerftestProtocol()
        : TBusBufferProtocol("TPerftestProtocol", TheConfig->ServerPort)
    {
        RegisterType(new TPerftestRequest);
        RegisterType(new TPerftestResponse);
    }
};

class TPerftestServer;
class TPerftestUsingModule;
class TPerftestClient;

struct TTestStats {
    TInstant Start;

    TAtomic Messages;
    TAtomic Errors;
    TAtomic Replies;

    void IncMessage() {
        AtomicIncrement(Messages);
    }
    void IncReplies() {
        AtomicDecrement(Messages);
        AtomicIncrement(Replies);
    }
    int NumMessage() {
        return AtomicGet(Messages);
    }
    void IncErrors() {
        AtomicDecrement(Messages);
        AtomicIncrement(Errors);
    }
    int NumErrors() {
        return AtomicGet(Errors);
    }
    int NumReplies() {
        return AtomicGet(Replies);
    }

    double GetThroughput() {
        return NumReplies() * 1000000.0 / (TInstant::Now() - Start).MicroSeconds();
    }

public:
    TTestStats()
        : Start(TInstant::Now())
        , Messages(0)
        , Errors(0)
        , Replies(0)
    {
    }

    void PeriodicallyPrint();
};

TTestStats Stats;

////////////////////////////////////////////////////////////////////
/// \brief Fast of the client session
class TPerftestClient : IBusClientHandler {
public:
    TBusClientSessionPtr Session;
    THolder<TBusProtocol> Proto;
    TBusMessageQueuePtr Bus;
    TVector<TBusClientConnectionPtr> Connections;

public:
    /// constructor creates instances of protocol and session
    TPerftestClient() {
        /// create or get instance of message queue, need one per application
        Bus = CreateMessageQueue(Config.ClientQueueConfig, "client");

        if (Config.SimpleProtocol) {
            Proto.Reset(new TSimpleProtocol);
        } else {
            Proto.Reset(new TPerftestProtocol);
        }

        Session = TBusClientSession::Create(Proto.Get(), this, Config.ClientSessionConfig, Bus);

        for (unsigned i = 0; i < ServerAddresses.size(); ++i) {
            Connections.push_back(Session->GetConnection(ServerAddresses[i]));
        }
    }

    /// dispatch of requests is done here
    void Work() {
        SetCurrentThreadName("FastClient::Work");

        while (!TheExit) {
            TBusClientConnection* connection;
            if (Connections.size() == 1) {
                connection = Connections.front().Get();
            } else {
                connection = Connections.at(RandomNumber<size_t>()).Get();
            }

            TBusMessage* message = NewRequest().Release();
            int ret = connection->SendMessage(message, true);

            if (ret == MESSAGE_OK) {
                Stats.IncMessage();
            } else if (ret == MESSAGE_BUSY) {
                //delete message;
                //Sleep(TDuration::MilliSeconds(1));
                //continue;
                Y_FAIL("unreachable");
            } else if (ret == MESSAGE_SHUTDOWN) {
                delete message;
            } else {
                delete message;
                Stats.IncErrors();
            }
        }
    }

    void Stop() {
        Session->Shutdown();
    }

    /// actual work is being done here
    void OnReply(TAutoPtr<TBusMessage> mess, TAutoPtr<TBusMessage> reply) override {
        Y_UNUSED(mess);

        if (Config.SimpleProtocol) {
            VerifyDynamicCast<TSimpleMessage*>(reply.Get());
        } else {
            TPerftestResponse* typed = VerifyDynamicCast<TPerftestResponse*>(reply.Get());

            CheckResponse(typed);
        }

        Stats.IncReplies();
    }

    /// message that could not be delivered
    void OnError(TAutoPtr<TBusMessage> mess, EMessageStatus status) override {
        Y_UNUSED(mess);
        Y_UNUSED(status);

        if (TheExit) {
            return;
        }

        Stats.IncErrors();

        // Y_ASSERT(TheConfig->Failure > 0.0);
    }
};

class TPerftestServerCommon {
public:
    THolder<TBusProtocol> Proto;

    TBusMessageQueuePtr Bus;

    TBusServerSessionPtr Session;

protected:
    TPerftestServerCommon(const char* name)
        : Session()
    {
        if (Config.SimpleProtocol) {
            Proto.Reset(new TSimpleProtocol);
        } else {
            Proto.Reset(new TPerftestProtocol);
        }

        /// create or get instance of single message queue, need one for application
        Bus = CreateMessageQueue(Config.ServerQueueConfig, name);
    }

public:
    void Stop() {
        Session->Shutdown();
    }
};

struct TAsyncRequest {
    TBusMessage* Request;
    TInstant ReceivedTime;
};

/////////////////////////////////////////////////////////////////////
/// \brief Fast of the server session
class TPerftestServer: public TPerftestServerCommon, public IBusServerHandler {
public:
    TLockFreeQueue<TAsyncRequest> AsyncRequests;

public:
    TPerftestServer()
        : TPerftestServerCommon("server")
    {
        /// register destination session
        Session = TBusServerSession::Create(Proto.Get(), this, Config.ServerSessionConfig, Bus);
        Y_ASSERT(Session && "probably somebody is listening on the same port");
    }

    /// when message comes, send reply
    void OnMessage(TOnMessageContext& mess) override {
        if (Config.SimpleProtocol) {
            TSimpleMessage* typed = VerifyDynamicCast<TSimpleMessage*>(mess.GetMessage());
            TAutoPtr<TSimpleMessage> response(new TSimpleMessage);
            response->Payload = typed->Payload;
            mess.SendReplyMove(response);
            return;
        }

        TPerftestRequest* typed = VerifyDynamicCast<TPerftestRequest*>(mess.GetMessage());

        CheckRequest(typed);

        /// forget replies for few messages, see what happends
        if (TheConfig->Failure > RandomNumber<double>()) {
            return;
        }

        /// sleep requested time
        if (TheConfig->Delay) {
            TAsyncRequest request;
            request.Request = mess.ReleaseMessage();
            request.ReceivedTime = TInstant::Now();
            AsyncRequests.Enqueue(request);
            return;
        }

        TAutoPtr<TPerftestResponse> reply(NewResponse(typed));
        /// sent empty reply for each message
        mess.SendReplyMove(reply);
        // TODO: count results
    }

    void Stop() {
        TPerftestServerCommon::Stop();
    }
};

class TPerftestUsingModule: public TPerftestServerCommon, public TBusModule {
public:
    TPerftestUsingModule()
        : TPerftestServerCommon("server")
        , TBusModule("fast")
    {
        Y_VERIFY(CreatePrivateSessions(Bus.Get()), "failed to initialize dupdetect module");
        Y_VERIFY(StartInput(), "failed to start input");
    }

    ~TPerftestUsingModule() override {
        Shutdown();
    }

private:
    TJobHandler Start(TBusJob* job, TBusMessage* mess) override {
        TPerftestRequest* typed = VerifyDynamicCast<TPerftestRequest*>(mess);
        CheckRequest(typed);

        /// sleep requested time
        if (TheConfig->Delay) {
            usleep(TheConfig->Delay);
        }

        /// forget replies for few messages, see what happends
        if (TheConfig->Failure > RandomNumber<double>()) {
            return nullptr;
        }

        job->SendReply(NewResponse(typed).Release());
        return nullptr;
    }

    TBusServerSessionPtr CreateExtSession(TBusMessageQueue& queue) override {
        return Session = CreateDefaultDestination(queue, Proto.Get(), Config.ServerSessionConfig);
    }
};

// ./perftest/perftest -s 11456 -c localhost:11456 -r 60 -n 4 -i 5000

using namespace std;
using namespace NBus;

static TNetworkAddress ParseNetworkAddress(const char* string) {
    TString Name;
    int Port;

    const char* port = strchr(string, ':');

    if (port != nullptr) {
        Name.append(string, port - string);
        Port = atoi(port + 1);
    } else {
        Name.append(string);
        Port = TheConfig->ServerPort != 0 ? TheConfig->ServerPort : DEFAULT_PORT;
    }

    return TNetworkAddress(Name, Port);
}

TVector<TNetAddr> ParseNodes(const TString nodes) {
    TVector<TNetAddr> r;

    TVector<TString> hosts;

    size_t numh = Split(nodes.data(), ",", hosts);

    for (int i = 0; i < int(numh); i++) {
        const TNetworkAddress& networkAddress = ParseNetworkAddress(hosts[i].data());
        Y_VERIFY(networkAddress.Begin() != networkAddress.End(), "no addresses");
        r.push_back(TNetAddr(networkAddress, &*networkAddress.Begin()));
    }

    return r;
}

TPerftestConfig::TPerftestConfig() {
    TBusSessionConfig defaultConfig;

    ServerPort = DEFAULT_PORT;
    Delay = 0; // artificial delay inside server OnMessage()
    MessageSize = 200;
    Failure = 0.00;
    Run = 60; // in seconds
    Nodes = "localhost";
    ServerUseModules = false;
    ExecuteOnMessageInWorkerPool = defaultConfig.ExecuteOnMessageInWorkerPool;
    ExecuteOnReplyInWorkerPool = defaultConfig.ExecuteOnReplyInWorkerPool;
    UseCompression = false;
    Profile = false;
    WwwPort = 0;
}

TPerftestConfig* TheConfig = new TPerftestConfig();
bool TheExit = false;

TSystemEvent StopEvent;

TSimpleSharedPtr<TPerftestServer> Server;
TSimpleSharedPtr<TPerftestUsingModule> ServerUsingModule;

TVector<TSimpleSharedPtr<TPerftestClient>> Clients;
TMutex ClientsLock;

void stopsignal(int /*sig*/) {
    fprintf(stderr, "\n-------------------- exiting ------------------\n");
    TheExit = true;
    StopEvent.Signal();
}

// -s <num> - start server on port <num>
// -c <node:port,node:port> - start client

void TTestStats::PeriodicallyPrint() {
    SetCurrentThreadName("print-stats");

    for (;;) {
        StopEvent.WaitT(TDuration::Seconds(1));
        if (TheExit)
            break;

        TVector<TSimpleSharedPtr<TPerftestClient>> clients;
        {
            TGuard<TMutex> guard(ClientsLock);
            clients = Clients;
        }

        fprintf(stderr, "replies=%d errors=%d throughput=%.3f mess/sec\n",
                NumReplies(), NumErrors(), GetThroughput());
        if (!!Server) {
            fprintf(stderr, "server: q: %u %s\n",
                    (unsigned)Server->Bus->GetExecutor()->GetWorkQueueSize(),
                    Server->Session->GetStatusSingleLine().data());
        }
        if (!!ServerUsingModule) {
            fprintf(stderr, "server: q: %u %s\n",
                    (unsigned)ServerUsingModule->Bus->GetExecutor()->GetWorkQueueSize(),
                    ServerUsingModule->Session->GetStatusSingleLine().data());
        }
        for (const auto& client : clients) {
            fprintf(stderr, "client: q: %u %s\n",
                    (unsigned)client->Bus->GetExecutor()->GetWorkQueueSize(),
                    client->Session->GetStatusSingleLine().data());
        }

        TStringStream stats;

        bool first = true;
        if (!!Server) {
            if (!first) {
                stats << "\n";
            }
            first = false;
            stats << "server:\n";
            stats << IndentText(Server->Bus->GetStatus());
        }
        if (!!ServerUsingModule) {
            if (!first) {
                stats << "\n";
            }
            first = false;
            stats << "server using modules:\n";
            stats << IndentText(ServerUsingModule->Bus->GetStatus());
        }
        for (const auto& client : clients) {
            if (!first) {
                stats << "\n";
            }
            first = false;
            stats << "client:\n";
            stats << IndentText(client->Bus->GetStatus());
        }

        TUnbufferedFileOutput("stats").Write(stats.Str());
    }
}

int main(int argc, char* argv[]) {
    NLWTrace::StartLwtraceFromEnv();

    /* unix foo */
    setvbuf(stdout, nullptr, _IONBF, 0);
    setvbuf(stderr, nullptr, _IONBF, 0);
    Umask(0);
    SetAsyncSignalHandler(SIGINT, stopsignal);
    SetAsyncSignalHandler(SIGTERM, stopsignal);
#ifndef _win_
    SetAsyncSignalHandler(SIGUSR1, stopsignal);
#endif
    signal(SIGPIPE, SIG_IGN);

    NLastGetopt::TOpts opts = NLastGetopt::TOpts::Default();
    opts.AddLongOption('s', "server-port", "server port").RequiredArgument("port").StoreResult(&TheConfig->ServerPort);
    opts.AddCharOption('m', "average message size").RequiredArgument("size").StoreResult(&TheConfig->MessageSize);
    opts.AddLongOption('c', "server-host", "server hosts").RequiredArgument("host[,host]...").StoreResult(&TheConfig->Nodes);
    opts.AddCharOption('f', "failure rate (rational number between 0 and 1)").RequiredArgument("rate").StoreResult(&TheConfig->Failure);
    opts.AddCharOption('w', "delay before reply").RequiredArgument("microseconds").StoreResult(&TheConfig->Delay);
    opts.AddCharOption('r', "run duration").RequiredArgument("seconds").StoreResult(&TheConfig->Run);
    opts.AddLongOption("client-count", "amount of clients").RequiredArgument("count").StoreResult(&TheConfig->ClientCount).DefaultValue("1");
    opts.AddLongOption("server-use-modules").StoreResult(&TheConfig->ServerUseModules, true);
    opts.AddLongOption("on-message-in-pool", "execute OnMessage callback in worker pool")
        .RequiredArgument("BOOL")
        .StoreResult(&TheConfig->ExecuteOnMessageInWorkerPool);
    opts.AddLongOption("on-reply-in-pool", "execute OnReply callback in worker pool")
        .RequiredArgument("BOOL")
        .StoreResult(&TheConfig->ExecuteOnReplyInWorkerPool);
    opts.AddLongOption("compression", "use compression").RequiredArgument("BOOL").StoreResult(&TheConfig->UseCompression);
    opts.AddLongOption("simple-proto").SetFlag(&Config.SimpleProtocol);
    opts.AddLongOption("profile").SetFlag(&TheConfig->Profile);
    opts.AddLongOption("www-port").RequiredArgument("PORT").StoreResult(&TheConfig->WwwPort);
    opts.AddHelpOption();

    Config.ServerQueueConfig.ConfigureLastGetopt(opts, "server-");
    Config.ServerSessionConfig.ConfigureLastGetopt(opts, "server-");
    Config.ClientQueueConfig.ConfigureLastGetopt(opts, "client-");
    Config.ClientSessionConfig.ConfigureLastGetopt(opts, "client-");

    opts.SetFreeArgsMax(0);

    NLastGetopt::TOptsParseResult parseResult(&opts, argc, argv);

    TheConfig->Print();
    Config.Print();

    if (TheConfig->Profile) {
        BeginProfiling();
    }

    TIntrusivePtr<TBusWww> www(new TBusWww);

    ServerAddresses = ParseNodes(TheConfig->Nodes);

    if (TheConfig->ServerPort) {
        if (TheConfig->ServerUseModules) {
            ServerUsingModule = new TPerftestUsingModule();
            www->RegisterModule(ServerUsingModule.Get());
        } else {
            Server = new TPerftestServer();
            www->RegisterServerSession(Server->Session);
        }
    }

    TVector<TSimpleSharedPtr<NThreading::TLegacyFuture<void, false>>> futures;

    if (ServerAddresses.size() > 0 && TheConfig->ClientCount > 0) {
        for (int i = 0; i < TheConfig->ClientCount; ++i) {
            TGuard<TMutex> guard(ClientsLock);
            Clients.push_back(new TPerftestClient);
            futures.push_back(new NThreading::TLegacyFuture<void, false>(std::bind(&TPerftestClient::Work, Clients.back())));
            www->RegisterClientSession(Clients.back()->Session);
        }
    }

    futures.push_back(new NThreading::TLegacyFuture<void, false>(std::bind(&TTestStats::PeriodicallyPrint, std::ref(Stats))));

    THolder<TBusWwwHttpServer> wwwServer;
    if (TheConfig->WwwPort != 0) {
        wwwServer.Reset(new TBusWwwHttpServer(www, TheConfig->WwwPort));
    }

    /* sit here until signal terminate our process */
    StopEvent.WaitT(TDuration::Seconds(TheConfig->Run));
    TheExit = true;
    StopEvent.Signal();

    if (!!Server) {
        Cerr << "Stopping server\n";
        Server->Stop();
    }
    if (!!ServerUsingModule) {
        Cerr << "Stopping server (using modules)\n";
        ServerUsingModule->Stop();
    }

    TVector<TSimpleSharedPtr<TPerftestClient>> clients;
    {
        TGuard<TMutex> guard(ClientsLock);
        clients = Clients;
    }

    if (!clients.empty()) {
        Cerr << "Stopping clients\n";

        for (auto& client : clients) {
            client->Stop();
        }
    }

    wwwServer.Destroy();

    for (const auto& future : futures) {
        future->Get();
    }

    if (TheConfig->Profile) {
        EndProfiling();
    }

    Cerr << "***SUCCESS***\n";
    return 0;
}