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#include <QtTest>
#include <QString>
#include <iostream>
#include "dummyresource/resourcefactory.h"
#include "dummyresource/domainadaptor.h"
#include "store.h"
#include "commands.h"
#include "entitybuffer.h"
#include "log.h"
#include "resourceconfig.h"
#include "definitions.h"
#include "hawd/dataset.h"
#include "hawd/formatter.h"
#include "event_generated.h"
#include "entity_generated.h"
#include "metadata_generated.h"
#include "createentity_generated.h"
#include "getrssusage.h"
static double variance(const QList<double> &values)
{
double mean = 0;
for (auto value : values) {
mean += value;
}
mean = mean / static_cast<double>(values.size());
double variance = 0;
for (auto value : values) {
variance += pow(static_cast<double>(value) - mean, 2);
}
variance = variance / static_cast<double>(values.size() - 1);
return variance;
}
static double maxDifference(const QList<double> &values)
{
auto max = values.first();
auto min = values.first();
for (auto value : values) {
if (value > max) {
max = value;
}
if (value < min) {
min = value;
}
}
return max - min;
}
static QByteArray createEntityBuffer(int &bufferSize)
{
flatbuffers::FlatBufferBuilder eventFbb;
eventFbb.Clear();
{
auto summary = eventFbb.CreateString("summary");
Sink::ApplicationDomain::Buffer::EventBuilder eventBuilder(eventFbb);
eventBuilder.add_summary(summary);
auto eventLocation = eventBuilder.Finish();
Sink::ApplicationDomain::Buffer::FinishEventBuffer(eventFbb, eventLocation);
}
flatbuffers::FlatBufferBuilder localFbb;
{
auto uid = localFbb.CreateString("testuid");
auto localBuilder = Sink::ApplicationDomain::Buffer::EventBuilder(localFbb);
localBuilder.add_uid(uid);
auto location = localBuilder.Finish();
Sink::ApplicationDomain::Buffer::FinishEventBuffer(localFbb, location);
}
flatbuffers::FlatBufferBuilder entityFbb;
Sink::EntityBuffer::assembleEntityBuffer(entityFbb, 0, 0, eventFbb.GetBufferPointer(), eventFbb.GetSize(), localFbb.GetBufferPointer(), localFbb.GetSize());
bufferSize = entityFbb.GetSize();
flatbuffers::FlatBufferBuilder fbb;
auto type = fbb.CreateString(Sink::ApplicationDomain::getTypeName<Sink::ApplicationDomain::Event>().toStdString().data());
auto delta = fbb.CreateVector<uint8_t>(entityFbb.GetBufferPointer(), entityFbb.GetSize());
Sink::Commands::CreateEntityBuilder builder(fbb);
builder.add_domainType(type);
builder.add_delta(delta);
auto location = builder.Finish();
Sink::Commands::FinishCreateEntityBuffer(fbb, location);
return QByteArray(reinterpret_cast<const char *>(fbb.GetBufferPointer()), fbb.GetSize());
}
/**
* Benchmark writing in the synchronizer process.
*/
class DummyResourceWriteBenchmark : public QObject
{
Q_OBJECT
QList<double> mRssGrowthPerEntity;
QList<double> mTimePerEntity;
void writeInProcess(int num)
{
DummyResource::removeFromDisk("sink.dummy.instance1");
QTime time;
time.start();
::DummyResource resource(Sink::ResourceContext{"sink.dummy.instance1", "dummy"});
int bufferSize = 0;
auto command = createEntityBuffer(bufferSize);
const auto startingRss = getCurrentRSS();
for (int i = 0; i < num; i++) {
resource.processCommand(Sink::Commands::CreateEntityCommand, command);
}
auto appendTime = time.elapsed();
Q_UNUSED(appendTime);
auto bufferSizeTotal = bufferSize * num;
// Wait until all messages have been processed
resource.processAllMessages().exec().waitForFinished();
auto allProcessedTime = time.elapsed();
const auto finalRss = getCurrentRSS();
const auto rssGrowth = finalRss - startingRss;
// Since the database is memory mapped it is attributted to the resident set size.
const auto rssWithoutDb = finalRss - DummyResource::diskUsage("sink.dummy.instance1");
const auto peakRss = getPeakRSS();
// How much peak deviates from final rss in percent
const auto percentageRssError = static_cast<double>(peakRss - finalRss) * 100.0 / static_cast<double>(finalRss);
auto rssGrowthPerEntity = rssGrowth / num;
std::cout << "Current Rss usage [kb]: " << finalRss / 1024 << std::endl;
std::cout << "Peak Rss usage [kb]: " << peakRss / 1024 << std::endl;
std::cout << "Rss growth [kb]: " << rssGrowth / 1024 << std::endl;
std::cout << "Rss growth per entity [byte]: " << rssGrowthPerEntity << std::endl;
std::cout << "Rss without db [kb]: " << rssWithoutDb / 1024 << std::endl;
std::cout << "Percentage peak rss error: " << percentageRssError << std::endl;
auto onDisk = DummyResource::diskUsage("sink.dummy.instance1");
auto writeAmplification = static_cast<double>(onDisk) / static_cast<double>(bufferSizeTotal);
std::cout << "On disk [kb]: " << onDisk / 1024 << std::endl;
std::cout << "Buffer size total [kb]: " << bufferSizeTotal / 1024 << std::endl;
std::cout << "Write amplification: " << writeAmplification << std::endl;
mTimePerEntity << static_cast<double>(allProcessedTime) / static_cast<double>(num);
mRssGrowthPerEntity << rssGrowthPerEntity;
QVERIFY(percentageRssError < 10);
// TODO This is much more than it should it seems, although adding the attachment results in pretty exactly a 1k increase,
// so it doesn't look like that memory is being duplicated.
QVERIFY(rssGrowthPerEntity < 2500);
// HAWD::Dataset dataset("dummy_write_in_process", m_hawdState);
// HAWD::Dataset::Row row = dataset.row();
//
// row.setValue("rows", num);
// row.setValue("append", (qreal)num/appendTime);
// row.setValue("total", (qreal)num/allProcessedTime);
// dataset.insertRow(row);
// HAWD::Formatter::print(dataset);
// Print memory layout, RSS is what is in memory
// std::system("exec pmap -x \"$PPID\"");
}
private slots:
void initTestCase()
{
Sink::Log::setDebugOutputLevel(Sink::Log::Warning);
}
void cleanup()
{
}
void test1k()
{
writeInProcess(1000);
}
void test2k()
{
writeInProcess(2000);
}
void test5k()
{
writeInProcess(5000);
}
// void test20k()
// {
// writeInProcess(20000);
// }
//
void ensureUsedMemoryRemainsStable()
{
auto rssStandardDeviation = sqrt(variance(mRssGrowthPerEntity));
auto timeStandardDeviation = sqrt(variance(mTimePerEntity));
std::cout << "Rss standard deviation " << rssStandardDeviation << std::endl;
std::cout << "Rss max difference [byte]" << maxDifference(mRssGrowthPerEntity) << std::endl;
std::cout << "Time standard deviation " << timeStandardDeviation << std::endl;
std::cout << "Time max difference [ms]" << maxDifference(mTimePerEntity) << std::endl;
QVERIFY(rssStandardDeviation < 1000);
QVERIFY(timeStandardDeviation < 1);
}
void getFreePages()
{
std::system(QString("mdb_stat %1/%2 -ff").arg(Sink::storageLocation()).arg("sink.dummy.instance1").toLatin1().constData());
}
// This allows to run individual parts without doing a cleanup, but still cleaning up normally
void testCleanupForCompleteTest()
{
DummyResource::removeFromDisk("sink.dummy.instance1");
}
private:
HAWD::State m_hawdState;
};
QTEST_MAIN(DummyResourceWriteBenchmark)
#include "dummyresourcewritebenchmark.moc"
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