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#include "load.h"
#include "interconnect_common.h"
#include "events_local.h"
#include <library/cpp/actors/protos/services_common.pb.h>
#include <library/cpp/actors/core/log.h>
#include <library/cpp/actors/core/actor_bootstrapped.h>
#include <library/cpp/actors/core/events.h>
#include <library/cpp/actors/core/hfunc.h>
#include <util/generic/queue.h>
namespace NInterconnect {
using namespace NActors;
enum {
EvGenerateMessages = EventSpaceBegin(TEvents::ES_PRIVATE),
EvPublishResults,
EvQueryTrafficCounter,
EvTrafficCounter,
};
struct TEvQueryTrafficCounter : TEventLocal<TEvQueryTrafficCounter, EvQueryTrafficCounter> {};
struct TEvTrafficCounter : TEventLocal<TEvTrafficCounter, EvTrafficCounter> {
std::shared_ptr<std::atomic_uint64_t> Traffic;
TEvTrafficCounter(std::shared_ptr<std::atomic_uint64_t> traffic)
: Traffic(std::move(traffic))
{}
};
class TLoadResponderActor : public TActor<TLoadResponderActor> {
STRICT_STFUNC(StateFunc,
HFunc(TEvLoadMessage, Handle);
CFunc(TEvents::TSystem::PoisonPill, Die);
)
void Handle(TEvLoadMessage::TPtr& ev, const TActorContext& ctx) {
ui64 bytes = ev->Get()->CalculateSerializedSizeCached();
auto& record = ev->Get()->Record;
auto *hops = record.MutableHops();
while (!hops->empty() && !hops->begin()->HasNextHop()) {
record.ClearPayload();
ev->Get()->StripPayload();
hops->erase(hops->begin());
}
if (!hops->empty()) {
// extract actor id of the next hop
const TActorId nextHopActorId = ActorIdFromProto(hops->begin()->GetNextHop());
hops->erase(hops->begin());
// forward message to next hop; preserve flags and cookie
auto msg = MakeHolder<TEvLoadMessage>();
record.Swap(&msg->Record);
bytes += msg->CalculateSerializedSizeCached();
ctx.Send(nextHopActorId, msg.Release(), ev->Flags, ev->Cookie);
}
*Traffic += bytes;
}
public:
TLoadResponderActor(std::shared_ptr<std::atomic_uint64_t> traffic)
: TActor(&TLoadResponderActor::StateFunc)
, Traffic(std::move(traffic))
{}
static constexpr IActor::EActivityType ActorActivityType() {
return IActor::INTERCONNECT_LOAD_RESPONDER;
}
private:
std::shared_ptr<std::atomic_uint64_t> Traffic;
};
class TLoadResponderMasterActor : public TActorBootstrapped<TLoadResponderMasterActor> {
TVector<TActorId> Slaves;
ui32 SlaveIndex = 0;
STRICT_STFUNC(StateFunc,
HFunc(TEvLoadMessage, Handle);
HFunc(TEvQueryTrafficCounter, Handle);
CFunc(TEvents::TSystem::PoisonPill, Die);
)
void Handle(TEvLoadMessage::TPtr& ev, const TActorContext& ctx) {
ctx.ExecutorThread.ActorSystem->Send(ev->Forward(Slaves[SlaveIndex]));
if (++SlaveIndex == Slaves.size()) {
SlaveIndex = 0;
}
}
void Handle(TEvQueryTrafficCounter::TPtr ev, const TActorContext& ctx) {
ctx.Send(ev->Sender, new TEvTrafficCounter(Traffic));
}
void Die(const TActorContext& ctx) override {
for (const TActorId& actorId : Slaves) {
ctx.Send(actorId, new TEvents::TEvPoisonPill);
}
TActorBootstrapped::Die(ctx);
}
public:
static constexpr IActor::EActivityType ActorActivityType() {
return IActor::INTERCONNECT_LOAD_RESPONDER;
}
TLoadResponderMasterActor()
{}
void Bootstrap(const TActorContext& ctx) {
Become(&TLoadResponderMasterActor::StateFunc);
while (Slaves.size() < 10) {
Slaves.push_back(ctx.Register(new TLoadResponderActor(Traffic)));
}
}
private:
std::shared_ptr<std::atomic_uint64_t> Traffic = std::make_shared<std::atomic_uint64_t>();
};
IActor* CreateLoadResponderActor() {
return new TLoadResponderMasterActor();
}
TActorId MakeLoadResponderActorId(ui32 nodeId) {
char x[12] = {'I', 'C', 'L', 'o', 'a', 'd', 'R', 'e', 's', 'p', 'A', 'c'};
return TActorId(nodeId, TStringBuf(x, 12));
}
class TLoadActor: public TActorBootstrapped<TLoadActor> {
struct TEvGenerateMessages : TEventLocal<TEvGenerateMessages, EvGenerateMessages> {};
struct TEvPublishResults : TEventLocal<TEvPublishResults, EvPublishResults> {};
struct TMessageInfo {
TInstant SendTimestamp;
TMessageInfo(const TInstant& sendTimestamp)
: SendTimestamp(sendTimestamp)
{
}
};
const TLoadParams Params;
TInstant NextMessageTimestamp;
THashMap<TString, TMessageInfo> InFly;
ui64 NextId = 1;
TVector<TActorId> Hops;
TActorId FirstHop;
ui64 NumDropped = 0;
std::shared_ptr<std::atomic_uint64_t> Traffic;
public:
static constexpr IActor::EActivityType ActorActivityType() {
return IActor::INTERCONNECT_LOAD_ACTOR;
}
TLoadActor(const TLoadParams& params)
: Params(params)
{}
void Bootstrap(const TActorContext& ctx) {
Become(&TLoadActor::QueryTrafficCounter);
ctx.Send(MakeLoadResponderActorId(SelfId().NodeId()), new TEvQueryTrafficCounter);
}
void Handle(TEvTrafficCounter::TPtr ev, const TActorContext& ctx) {
Traffic = std::move(ev->Get()->Traffic);
for (const ui32 nodeId : Params.NodeHops) {
const TActorId& actorId = nodeId ? MakeLoadResponderActorId(nodeId) : TActorId();
if (!FirstHop) {
FirstHop = actorId;
} else {
Hops.push_back(actorId);
}
}
Hops.push_back(ctx.SelfID);
Become(&TLoadActor::StateFunc);
NextMessageTimestamp = ctx.Now();
ResetThroughput(NextMessageTimestamp, *Traffic);
GenerateMessages(ctx);
ctx.Schedule(Params.Duration, new TEvents::TEvPoisonPill);
SchedulePublishResults(ctx);
}
void GenerateMessages(const TActorContext& ctx) {
while (InFly.size() < Params.InFlyMax && ctx.Now() >= NextMessageTimestamp) {
// generate payload
const ui32 size = Params.SizeMin + RandomNumber(Params.SizeMax - Params.SizeMin + 1);
// generate message id
const ui64 cookie = NextId++;
TString id = Sprintf("%" PRIu64, cookie);
// create message and send it to the first hop
THolder<TEvLoadMessage> ev;
if (Params.UseProtobufWithPayload && size) {
auto buffer = TRopeAlignedBuffer::Allocate(size);
memset(buffer->GetBuffer(), '*', size);
ev.Reset(new TEvLoadMessage(Hops, id, TRope(buffer)));
} else {
TString payload;
if (size) {
payload = TString::Uninitialized(size);
memset(payload.Detach(), '*', size);
}
ev.Reset(new TEvLoadMessage(Hops, id, payload ? &payload : nullptr));
}
UpdateThroughput(ev->CalculateSerializedSizeCached());
ctx.Send(FirstHop, ev.Release(), IEventHandle::MakeFlags(Params.Channel, 0), cookie);
// register in the map
InFly.emplace(id, TMessageInfo(ctx.Now()));
// put item into timeout queue
PutTimeoutQueueItem(ctx, id);
const TDuration duration = TDuration::MicroSeconds(Params.IntervalMin.GetValue() +
RandomNumber(Params.IntervalMax.GetValue() - Params.IntervalMin.GetValue() + 1));
if (Params.SoftLoad) {
NextMessageTimestamp += duration;
} else {
NextMessageTimestamp = ctx.Now() + duration;
}
}
// schedule next generate messages call
if (NextMessageTimestamp > ctx.Now() && InFly.size() < Params.InFlyMax) {
ctx.Schedule(NextMessageTimestamp - ctx.Now(), new TEvGenerateMessages);
}
}
void Handle(TEvLoadMessage::TPtr& ev, const TActorContext& ctx) {
const auto& record = ev->Get()->Record;
auto it = InFly.find(record.GetId());
if (it != InFly.end()) {
// record message rtt
const TDuration rtt = ctx.Now() - it->second.SendTimestamp;
UpdateHistogram(ctx.Now(), rtt);
// update throughput
UpdateThroughput(ev->Get()->CalculateSerializedSizeCached());
// remove message from the in fly map
InFly.erase(it);
} else {
++NumDropped;
}
GenerateMessages(ctx);
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// RTT HISTOGRAM
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
const TDuration AggregationPeriod = TDuration::Seconds(20);
TDeque<std::pair<TInstant, TDuration>> Histogram;
void UpdateHistogram(TInstant when, TDuration rtt) {
Histogram.emplace_back(when, rtt);
const TInstant barrier = when - AggregationPeriod;
while (Histogram && Histogram.front().first < barrier) {
Histogram.pop_front();
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// THROUGHPUT
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
TInstant ThroughputFirstSample = TInstant::Zero();
ui64 ThroughputSamples = 0;
ui64 ThroughputBytes = 0;
ui64 TrafficAtBegin = 0;
void UpdateThroughput(ui64 bytes) {
ThroughputBytes += bytes;
++ThroughputSamples;
}
void ResetThroughput(TInstant when, ui64 traffic) {
ThroughputFirstSample = when;
ThroughputSamples = 0;
ThroughputBytes = 0;
TrafficAtBegin = traffic;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// TIMEOUT QUEUE OPERATIONS
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
TQueue<std::pair<TInstant, TString>> TimeoutQueue;
void PutTimeoutQueueItem(const TActorContext& ctx, TString id) {
TimeoutQueue.emplace(ctx.Now() + TDuration::Minutes(1), std::move(id));
if (TimeoutQueue.size() == 1) {
ScheduleWakeup(ctx);
}
}
void ScheduleWakeup(const TActorContext& ctx) {
ctx.Schedule(TimeoutQueue.front().first - ctx.Now(), new TEvents::TEvWakeup);
}
void HandleWakeup(const TActorContext& ctx) {
// ui32 numDropped = 0;
while (TimeoutQueue && TimeoutQueue.front().first <= ctx.Now()) {
/*numDropped += */InFly.erase(TimeoutQueue.front().second);
TimeoutQueue.pop();
}
if (TimeoutQueue) {
// we still have some elements in timeout queue, so schedule next wake up to tidy up
ScheduleWakeup(ctx);
}
GenerateMessages(ctx);
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// RESULT PUBLISHING
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
const TDuration ResultPublishPeriod = TDuration::Seconds(15);
void SchedulePublishResults(const TActorContext& ctx) {
ctx.Schedule(ResultPublishPeriod, new TEvPublishResults);
}
void PublishResults(const TActorContext& ctx, bool schedule = true) {
const TInstant now = ctx.Now();
TStringStream msg;
msg << "Load# '" << Params.Name << "'";
msg << " Throughput# ";
const TDuration duration = now - ThroughputFirstSample;
const ui64 traffic = *Traffic;
msg << "{window# " << duration
<< " bytes# " << ThroughputBytes
<< " samples# " << ThroughputSamples
<< " b/s# " << ui64(ThroughputBytes * 1000000 / duration.MicroSeconds())
<< " common# " << ui64((traffic - TrafficAtBegin) * 1000000 / duration.MicroSeconds())
<< "}";
ResetThroughput(now, traffic);
msg << " RTT# ";
if (Histogram) {
const TDuration duration = Histogram.back().first - Histogram.front().first;
msg << "{window# " << duration << " samples# " << Histogram.size();
TVector<TDuration> v;
v.reserve(Histogram.size());
for (const auto& item : Histogram) {
v.push_back(item.second);
}
std::sort(v.begin(), v.end());
for (double q : {0.5, 0.9, 0.99, 0.999, 0.9999, 1.0}) {
const size_t pos = q * (v.size() - 1);
msg << Sprintf(" %.4f# %s", q, v[pos].ToString().data());
}
msg << "}";
} else {
msg << "<empty>";
}
msg << " NumDropped# " << NumDropped;
if (!schedule) {
msg << " final";
}
LOG_NOTICE(ctx, NActorsServices::INTERCONNECT_SPEED_TEST, "%s", msg.Str().data());
if (schedule) {
SchedulePublishResults(ctx);
}
}
STRICT_STFUNC(QueryTrafficCounter,
HFunc(TEvTrafficCounter, Handle);
)
STRICT_STFUNC(StateFunc,
CFunc(TEvents::TSystem::PoisonPill, Die);
CFunc(TEvents::TSystem::Wakeup, HandleWakeup);
CFunc(EvPublishResults, PublishResults);
CFunc(EvGenerateMessages, GenerateMessages);
HFunc(TEvLoadMessage, Handle);
)
void Die(const TActorContext& ctx) override {
PublishResults(ctx, false);
TActorBootstrapped::Die(ctx);
}
};
IActor* CreateLoadActor(const TLoadParams& params) {
return new TLoadActor(params);
}
}
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