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benchmark.cpp
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benchmark.cpp
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#include "benchmark.h"
#include <QProcess>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>
#include <QThread>
#include <QFile>
#include <signal.h>
#ifdef PERFORM_PAGECACHE_CLEARING_USING_KF5AUTH
#include <KAuth>
#include <KAuthAction>
#endif
#include "appsettings.h"
#include "global.h"
Benchmark::Benchmark(AppSettings *settings)
{
m_running = false;
m_settings = settings;
QProcess process;
process.start("fio", {"--version"});
process.waitForFinished();
m_FIOVersion = process.readAllStandardOutput().simplified();
process.close();
}
QString Benchmark::getFIOVersion()
{
return m_FIOVersion;
}
bool Benchmark::isFIODetected()
{
return m_FIOVersion.indexOf("fio-") == 0;
}
void Benchmark::startFIO(int block_size, int queue_depth, int threads, const QString &rw, const QString &statusMessage)
{
emit benchmarkStatusUpdate(tr("Preparing..."));
#ifdef PERFORM_PAGECACHE_CLEARING_USING_KF5AUTH
KAuth::Action dropCacheAction("org.jonmagon.kdiskmark.dropcache");
dropCacheAction.setHelperId("org.jonmagon.kdiskmark");
QVariantMap args; args["check"] = true; dropCacheAction.setArguments(args);
KAuth::ExecuteJob* dropCacheJob = dropCacheAction.execute();
if (m_settings->shouldFlushCache()) {
dropCacheJob->exec();
if (dropCacheAction.status() != KAuth::Action::AuthorizedStatus) {
if (dropCacheJob->error() && !dropCacheJob->errorText().isEmpty()) {
emit failed(dropCacheJob->errorText());
}
setRunning(false);
return;
}
}
else {
dropCacheJob->~ExecuteJob();
}
args["check"] = false; dropCacheAction.setArguments(args);
#endif
auto prepareProcess = std::make_shared<QProcess>();
prepareProcess->start("fio", QStringList()
<< "--create_only=1"
<< QStringLiteral("--filename=%1").arg(m_settings->getBenchmarkFile())
<< QStringLiteral("--size=%1m").arg(m_settings->getFileSize())
<< QStringLiteral("--name=%1").arg(rw));
prepareProcess->waitForFinished(-1);
prepareProcess->close();
for (int i = 0; i < m_settings->getLoopsCount(); i++) {
auto process = std::make_shared<QProcess>();
process->start("fio", QStringList()
<< "--output-format=json"
<< "--ioengine=libaio"
<< "--direct=1"
<< "--randrepeat=0"
<< "--refill_buffers"
<< "--end_fsync=1"
<< QStringLiteral("--rwmixread=%1").arg(m_settings->getRandomReadPercentage())
<< QStringLiteral("--filename=%1").arg(m_settings->getBenchmarkFile())
<< QStringLiteral("--name=%1").arg(rw)
<< QStringLiteral("--size=%1m").arg(m_settings->getFileSize())
<< QStringLiteral("--bs=%1k").arg(block_size)
<< QStringLiteral("--runtime=%1").arg(m_settings->getMeasuringTime())
<< QStringLiteral("--rw=%1").arg(rw)
<< QStringLiteral("--iodepth=%1").arg(queue_depth)
<< QStringLiteral("--numjobs=%1").arg(threads));
kill(process->processId(), SIGSTOP); // Suspend
m_processes.push_back(process);
}
PerformanceResult totalRead { 0, 0, 0 }, totalWrite { 0, 0, 0 };
unsigned int index = 0;
for (auto &process : m_processes) {
if (!m_running) break;
emit benchmarkStatusUpdate(statusMessage.arg(index).arg(m_settings->getLoopsCount()));
#ifdef BUILD_WITH_PAGECACHE_CLEARING_SUPPORT
if (m_settings->shouldFlushCache()) {
#ifdef PERFORM_PAGECACHE_CLEARING_USING_KF5AUTH
dropCacheJob = dropCacheAction.execute();
if (!dropCacheJob->exec()) {
if (dropCacheJob->error() && !dropCacheJob->errorText().isEmpty()) {
emit failed(dropCacheJob->errorText());
}
setRunning(false);
return;
}
#else
QFile dropCaches("/proc/sys/vm/drop_caches");
if (dropCaches.open(QIODevice::WriteOnly | QIODevice::Text)){
dropCaches.write("1");
}
dropCaches.close();
#endif
}
#endif
kill(process->processId(), SIGCONT); // Resume
process->waitForFinished(-1);
if (process->exitStatus() != QProcess::NormalExit) {
setRunning(false);
}
if (m_running) {
index++;
auto result = parseResult(process);
switch (m_settings->performanceProfile)
{
case AppSettings::PerformanceProfile::Default:
totalRead += result.read;
totalWrite += result.write;
break;
case AppSettings::PerformanceProfile::Peak:
case AppSettings::PerformanceProfile::RealWorld:
totalRead.updateWithBetterValues(result.read);
totalWrite.updateWithBetterValues(result.write);
break;
}
}
process->close();
if (rw.contains("read")) {
sendResult(totalRead, index);
}
else if (rw.contains("write")) {
sendResult(totalWrite, index);
}
else if (rw.contains("rw")) {
float p = m_settings->getRandomReadPercentage();
sendResult((totalRead * p + totalWrite * (100.f - p)) / 100.f, index);
}
}
m_processes.clear();
}
void Benchmark::sendResult(const Benchmark::PerformanceResult &result, const int index)
{
if (m_settings->performanceProfile == AppSettings::PerformanceProfile::Default) {
for (auto progressBar : m_progressBars) {
emit resultReady(progressBar, result / index);
}
}
else {
for (auto progressBar : m_progressBars) {
emit resultReady(progressBar, result);
}
}
}
Benchmark::ParsedJob Benchmark::parseResult(const std::shared_ptr<QProcess> process)
{
QString output = QString(process->readAllStandardOutput());
QJsonDocument jsonResponse = QJsonDocument::fromJson(output.toUtf8());
QJsonObject jsonObject = jsonResponse.object();
QJsonArray jobs = jsonObject["jobs"].toArray();
ParsedJob parsedJob {{0, 0, 0}, {0, 0, 0}};
QString errorOutput = process->readAllStandardError();
int jobsCount = jobs.count();
if (jobsCount == 0 && !errorOutput.isEmpty()) {
setRunning(false);
emit failed(errorOutput);
}
else if (jobsCount == 0) {
setRunning(false);
emit failed("Bad FIO output.");
}
else {
for (int i = 0; i < jobsCount; i++) {
QJsonObject job = jobs.takeAt(i).toObject();
if (job["error"].toInt() == 0) {
QJsonObject jobRead = job["read"].toObject();
parsedJob.read.Bandwidth += jobRead.value("bw").toInt() / 1000.0; // to mb
parsedJob.read.IOPS += jobRead.value("iops").toDouble();
parsedJob.read.Latency += jobRead["lat_ns"].toObject().value("mean").toDouble() / 1000.0 / jobsCount; // to usec
QJsonObject jobWrite = job["write"].toObject();
parsedJob.write.Bandwidth += jobWrite.value("bw").toInt() / 1000.0; // to mb
parsedJob.write.IOPS += jobWrite.value("iops").toDouble();
parsedJob.write.Latency += jobWrite["lat_ns"].toObject().value("mean").toDouble() / 1000.0 / jobsCount; // to usec
}
else {
setRunning(false);
emit failed(errorOutput.mid(errorOutput.simplified().lastIndexOf("=") + 1));
}
}
}
return parsedJob;
}
void Benchmark::setRunning(bool state)
{
if (m_running == state)
return;
m_running = state;
if (!m_running) {
for (auto &process : m_processes) {
if (process->state() == QProcess::Running || process->state() == QProcess::Starting) {
kill(process->processId(), SIGINT);
}
}
}
emit runningStateChanged(state);
}
void Benchmark::runBenchmark(QList<QPair<Benchmark::Type, QVector<QProgressBar*>>> tests)
{
QListIterator<QPair<Benchmark::Type, QVector<QProgressBar*>>> iter(tests);
// Set to 0 all the progressbars for current tests
while (iter.hasNext()) {
auto progressBars = iter.next().second;
for (auto obj : progressBars) {
emit resultReady(obj, PerformanceResult());
}
}
iter.toFront();
AppSettings::BenchmarkParams params;
QPair<Benchmark::Type, QVector<QProgressBar*>> item;
while (iter.hasNext() && m_running) {
item = iter.next();
m_progressBars = item.second;
switch (item.first)
{
case SEQ_1_Read:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::SEQ_1);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWSequentialRead(), tr("Sequential Read %1/%2"));
break;
case SEQ_1_Write:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::SEQ_1);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWSequentialWrite(), tr("Sequential Write %1/%2"));
break;
case SEQ_1_Mix:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::SEQ_1);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWSequentialMix(), tr("Sequential Mix %1/%2"));
break;
case SEQ_2_Read:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::SEQ_2);
startFIO(params.BlockSize, params.Queues,params.Threads,
Global::getRWSequentialRead(), tr("Sequential Read %1/%2"));
break;
case SEQ_2_Write:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::SEQ_2);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWSequentialWrite(), tr("Sequential Write %1/%2"));
break;
case SEQ_2_Mix:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::SEQ_2);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWSequentialMix(), tr("Sequential Mix %1/%2"));
break;
case RND_1_Read:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::RND_1);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWRandomRead(), tr("Random Read %1/%2"));
break;
case RND_1_Write:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::RND_1);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWRandomWrite(), tr("Random Write %1/%2"));
break;
case RND_1_Mix:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::RND_1);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWSequentialMix(), tr("Random Mix %1/%2"));
break;
case RND_2_Read:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::RND_2);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWRandomRead(), tr("Random Read %1/%2"));
break;
case RND_2_Write:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::RND_2);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWRandomWrite(), tr("Random Write %1/%2"));
break;
case RND_2_Mix:
params = m_settings->getBenchmarkParams(AppSettings::BenchmarkTest::RND_2);
startFIO(params.BlockSize, params.Queues, params.Threads,
Global::getRWSequentialMix(), tr("Random Mix %1/%2"));
break;
}
if (iter.hasNext()) {
for (int i = 0; i < m_settings->getIntervalTime() && m_running; i++) {
emit benchmarkStatusUpdate(tr("Interval Time %1/%2 sec").arg(i).arg(m_settings->getIntervalTime()));
QThread::sleep(1);
}
}
}
QFile(m_settings->getBenchmarkFile()).remove();
setRunning(false);
emit finished();
}