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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.benchmark;
import com.yahoo.jdisc.Request;
import com.yahoo.jdisc.Response;
import com.yahoo.jdisc.application.ContainerBuilder;
import com.yahoo.jdisc.handler.AbstractRequestHandler;
import com.yahoo.jdisc.handler.CallableResponseDispatch;
import com.yahoo.jdisc.handler.ContentChannel;
import com.yahoo.jdisc.handler.RequestDispatch;
import com.yahoo.jdisc.handler.RequestHandler;
import com.yahoo.jdisc.handler.ResponseDispatch;
import com.yahoo.jdisc.handler.ResponseHandler;
import com.yahoo.jdisc.service.CurrentContainer;
import com.yahoo.jdisc.test.TestDriver;
import org.junit.jupiter.api.Test;
import java.net.URI;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Random;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import static org.junit.jupiter.api.Assertions.assertTrue;
/**
* @author Simon Thoresen Hult
*/
public class ThroughputTestCase {
private static final int NUM_REQUESTS = 100;
private static final int MIN_THREADS = 1;
private static final int MAX_THREADS = 64;
private static final int MIN_LOOPS = 0;
private static final int MAX_LOOPS = 1024;
private static final String HANDLER_URI = "http://localhost/";
private static final URI REQUEST_URI = URI.create(HANDLER_URI);
private static final ExecutorService executor = Executors.newFixedThreadPool(MAX_THREADS * 2);
private static long preventOptimization = 0;
@Test
void runUnthreadedMeasurementsWithWorkload() throws Exception {
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
runMeasurements(driver, new UnthreadedHandler(MAX_LOOPS)); // warmup
StringBuilder out = new StringBuilder();
out.append("\n");
out.append(" | ");
for (int i = MIN_THREADS; i <= MAX_THREADS; i *= 2) {
out.append(String.format("%10d", i));
}
out.append("\n");
out.append("------+-");
for (int i = MIN_THREADS; i <= MAX_THREADS; i *= 2) {
out.append("----------");
}
out.append("\n");
for (int i = MIN_LOOPS; i <= MAX_LOOPS; i = Math.max(1, i * 2)) {
out.append(String.format("%5d | ", i));
RequestHandler handler = new UnthreadedHandler(i);
for (Long val : runMeasurements(driver, handler)) {
out.append(String.format("%10d", val));
}
out.append("\n");
}
System.err.println(out);
System.err.println(preventOptimization);
assertTrue(driver.close());
}
@Test
void runThreadedMeasurements() throws Exception {
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
runMeasurements(driver, new ThreadedHandler()); // warmup
Iterator<Long> it = runMeasurements(driver, new ThreadedHandler()).iterator();
for (int numThreads = MIN_THREADS; numThreads <= MAX_THREADS; numThreads *= 2) {
System.err.println(String.format("%2d threads: %10d", numThreads, it.next()));
}
assertTrue(driver.close());
}
private static List<Long> runMeasurements(TestDriver driver, RequestHandler handler) throws Exception {
ContainerBuilder builder = driver.newContainerBuilder();
builder.serverBindings().bind(HANDLER_URI, handler);
driver.activateContainer(builder);
handler.release();
List<Long> ret = new LinkedList<>();
for (int i = MIN_THREADS; i <= MAX_THREADS; i *= 2) {
ret.add(measureThroughput(driver, i));
}
return ret;
}
private static long measureThroughput(CurrentContainer container, int numThreads) throws Exception {
List<RequestTask> tasks = new LinkedList<>();
for (int i = 0; i < numThreads; ++i) {
RequestTask task = new RequestTask(container);
tasks.add(task);
}
List<Future<Long>> results = executor.invokeAll(tasks);
long nanos = 0;
for (Future<Long> res : results) {
nanos = Math.max(nanos, res.get());
}
return (numThreads * NUM_REQUESTS * TimeUnit.SECONDS.toNanos(1)) / nanos;
}
private static class RequestTask implements Callable<Long> {
final CurrentContainer container;
RequestTask(CurrentContainer container) {
this.container = container;
}
@Override
public Long call() throws Exception {
long time = System.nanoTime();
for (int i = 0; i < NUM_REQUESTS; ++i) {
new RequestDispatch() {
@Override
protected Request newRequest() {
Request request = new Request(container, REQUEST_URI);
request.setTimeout(600, TimeUnit.SECONDS);
return request;
}
}.dispatch().get();
}
return System.nanoTime() - time;
}
}
private static class UnthreadedHandler extends AbstractRequestHandler {
final int numLoops;
UnthreadedHandler(int numLoops) {
this.numLoops = numLoops;
}
@Override
public ContentChannel handleRequest(Request request, ResponseHandler handler) {
ResponseDispatch.newInstance(Response.Status.OK).dispatch(handler);
preventOptimization += nextLong();
return null;
}
long nextLong() {
Random rnd = new Random();
int k = 0;
for (int i = 0; i < numLoops; ++i) {
k += rnd.nextInt();
}
return k;
}
}
private static class ThreadedHandler extends AbstractRequestHandler {
@Override
public ContentChannel handleRequest(Request request, ResponseHandler handler) {
executor.submit(new CallableResponseDispatch(handler) {
@Override
public Response newResponse() {
return new Response(Response.Status.OK);
}
});
return null;
}
}
}
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