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#include <library/cpp/actors/interconnect/channel_scheduler.h>
#include <library/cpp/actors/interconnect/events_local.h>
#include <library/cpp/testing/unittest/registar.h>
using namespace NActors;
Y_UNIT_TEST_SUITE(ChannelScheduler) {
Y_UNIT_TEST(PriorityTraffic) {
auto common = MakeIntrusive<TInterconnectProxyCommon>();
common->MonCounters = MakeIntrusive<NMonitoring::TDynamicCounters>();
std::shared_ptr<IInterconnectMetrics> ctr = CreateInterconnectCounters(common);
ctr->SetPeerInfo("peer", "1");
auto callback = [](THolder<IEventBase>) {};
TEventHolderPool pool(common, callback);
TSessionParams p;
TChannelScheduler scheduler(1, {}, ctr, pool, 64 << 20, p);
ui32 numEvents = 0;
auto pushEvent = [&](size_t size, int channel) {
TString payload(size, 'X');
auto ev = MakeHolder<IEventHandleFat>(1, 0, TActorId(), TActorId(), MakeIntrusive<TEventSerializedData>(payload, TEventSerializationInfo{}), 0);
auto& ch = scheduler.GetOutputChannel(channel);
const bool wasWorking = ch.IsWorking();
ch.Push(*ev);
if (!wasWorking) {
scheduler.AddToHeap(ch, 0);
}
++numEvents;
};
for (ui32 i = 0; i < 100; ++i) {
pushEvent(10000, 1);
}
for (ui32 i = 0; i < 1000; ++i) {
pushEvent(1000, 2);
}
std::map<ui16, ui32> run;
ui32 step = 0;
std::deque<std::map<ui16, ui32>> window;
for (; numEvents; ++step) {
TTcpPacketOutTask task(p);
if (step == 100) {
for (ui32 i = 0; i < 200; ++i) {
pushEvent(1000, 3);
}
}
std::map<ui16, ui32> ch;
while (numEvents) {
TEventOutputChannel *channel = scheduler.PickChannelWithLeastConsumedWeight();
ui32 before = task.GetDataSize();
ui64 weightConsumed = 0;
numEvents -= channel->FeedBuf(task, 0, &weightConsumed);
ui32 after = task.GetDataSize();
Y_VERIFY(after >= before);
scheduler.FinishPick(weightConsumed, 0);
const ui32 bytesAdded = after - before;
if (!bytesAdded) {
break;
}
ch[channel->ChannelId] += bytesAdded;
}
scheduler.Equalize();
for (const auto& [key, value] : ch) {
run[key] += value;
}
window.push_back(ch);
if (window.size() == 32) {
for (const auto& [key, value] : window.front()) {
run[key] -= value;
if (!run[key]) {
run.erase(key);
}
}
window.pop_front();
}
double mean = 0.0;
for (const auto& [key, value] : run) {
mean += value;
}
mean /= run.size();
double dev = 0.0;
for (const auto& [key, value] : run) {
dev += (value - mean) * (value - mean);
}
dev = sqrt(dev / run.size());
double devToMean = dev / mean;
Cerr << step << ": ";
for (const auto& [key, value] : run) {
Cerr << "ch" << key << "=" << value << " ";
}
Cerr << "mean# " << mean << " dev# " << dev << " part# " << devToMean;
Cerr << Endl;
UNIT_ASSERT(devToMean < 1);
}
}
}
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