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* to you under the Apache License, Version 2.0 (the
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* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.tinkerpop.gremlin.driver.util;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.concurrent.BasicThreadFactory;
import org.apache.tinkerpop.gremlin.driver.Channelizer;
import org.apache.tinkerpop.gremlin.driver.Client;
import org.apache.tinkerpop.gremlin.driver.Cluster;
import org.apache.tinkerpop.gremlin.util.ser.Serializers;
import org.apache.tinkerpop.gremlin.structure.util.ElementHelper;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Random;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.IntStream;
/**
* An internal application used to test out configuration parameters for Gremlin Driver.
*
* @author Stephen Mallette (http://stephen.genoprime.com)
*/
public class ProfilingApplication {
private static final Random random = new Random(0); // Same seed to ensure consistent test runs.
private static final String[] scripts = new String[]{
"g.V()",
"g.V(1).out('knows')",
"g.V(1).out('knows').has('name','josh')",
"g.V(1).as(\"a\").out(\"knows\").as(\"b\").select(\"a\", \"b\")",
"g.V(1).as(\"a\").out(\"knows\").as(\"b\").select(\"a\", \"b\").by(\"name\")",
"g.V().hasLabel(\"person\").as(\"p\").map(__.bothE().label().groupCount()).as(\"r\").select(\"p\", \"r\")",
"g.V().choose(__.outE().count().is(0L), __.as(\"a\"), __.as(\"b\")).choose(__.select(\"a\"), __.select(\"a\"), __.select(\"b\"))",
"g.V().group(\"a\").by(T.label).by(outE().values(\"weight\").sum()).cap(\"a\")",
"g.V().repeat(__.union(__.out(\"knows\").group(\"a\").by(\"age\"), __.out(\"created\").group(\"b\").by(\"name\").by(count())).group(\"a\").by(\"name\")).times(2).cap(\"a\", \"b\")",
"g.V().match(\n" +
" as(\"a\").out(\"knows\").as(\"b\"),\n" +
" as(\"b\").out(\"created\").has(\"name\", \"lop\"),\n" +
" as(\"b\").match(\n" +
" as(\"b\").out(\"created\").as(\"d\"),\n" +
" as(\"d\").in(\"created\").as(\"c\")).select(\"c\").as(\"c\")).select(\"a\", \"b\", \"c\")"
};
private final Cluster cluster;
private final int requests;
private final String executionName;
private final String script;
private final int tooSlowThreshold;
private final boolean exercise;
private final ExecutorService executor;
public ProfilingApplication(final String executionName, final Cluster cluster, final int requests, final ExecutorService executor,
final String script, final int tooSlowThreshold, final boolean exercise) {
this.executionName = executionName;
this.cluster = cluster;
this.requests = requests;
this.executor = executor;
this.script = script;
this.tooSlowThreshold = tooSlowThreshold;
this.exercise = exercise;
}
public long executeThroughput() throws Exception {
final AtomicInteger tooSlow = new AtomicInteger(0);
final Client client = cluster.connect();
final String executionId = "[" + executionName + "]";
try {
final CountDownLatch latch = new CountDownLatch(requests);
client.init();
final long start = System.nanoTime();
IntStream.range(0, requests).forEach(i -> {
final String s = exercise ? chooseScript() : script;
client.submitAsync(s).thenAcceptAsync(r -> {
try {
r.all().get(tooSlowThreshold, TimeUnit.MILLISECONDS);
} catch (TimeoutException ex) {
tooSlow.incrementAndGet();
} catch (Exception ex) {
ex.printStackTrace();
} finally {
latch.countDown();
}
}, executor);
});
// finish once all requests are accounted for
latch.await();
final long end = System.nanoTime();
final long total = end - start;
final double totalSeconds = total / 1000000000d;
final long requestCount = requests;
final long reqSec = Math.round(requestCount / totalSeconds);
System.out.println(String.format(StringUtils.rightPad(executionId, 10) + " requests: %s | time(s): %s | req/sec: %s | too slow: %s", requestCount, StringUtils.rightPad(String.valueOf(totalSeconds), 14), StringUtils.rightPad(String.valueOf(reqSec), 7), exercise ? "N/A" : tooSlow.get()));
return reqSec;
} catch (Exception ex) {
ex.printStackTrace();
throw new RuntimeException(ex);
} finally {
client.close();
}
}
public double executeLatency() throws Exception {
final Client client = cluster.connect();
final String executionId = "[" + executionName + "]";
try {
client.init();
final long start = System.nanoTime();
int size = 0;
final Iterator itr = client.submitAsync(script).get().iterator();
try {
while (true) {
itr.next();
size++;
}
} catch (NoSuchElementException nsee) {
; // Expected as hasNext() not called to increase performance.
}
final long end = System.nanoTime();
final long total = (end - start);
final double totalSeconds = total / 1000000000d;
System.out.println(String.format(StringUtils.rightPad(executionId, 10) + "time: %s, result count: %s", StringUtils.rightPad(String.valueOf(totalSeconds), 7), StringUtils.rightPad(String.valueOf(size), 10)));
return totalSeconds;
} catch (Exception ex) {
ex.printStackTrace();
throw new RuntimeException(ex);
} finally {
client.close();
}
}
private String chooseScript() {
return scripts[random.nextInt(scripts.length - 1)];
}
public enum TestType { LATENCY, THROUGHPUT };
public static void main(final String[] args) {
final Map options = ElementHelper.asMap(args);
final boolean noExit = Boolean.parseBoolean(options.getOrDefault("noExit", "false").toString());
final int parallelism = Integer.parseInt(options.getOrDefault("parallelism", "16").toString());
final BasicThreadFactory threadFactory = new BasicThreadFactory.Builder().namingPattern("profiler-%d").build();
final ExecutorService executor = Executors.newFixedThreadPool(parallelism, threadFactory);
final TestType testType = TestType.values()[(Integer.parseInt(options.getOrDefault("testType", "1").toString()) % TestType.values().length)];
final String host = options.getOrDefault("host", "localhost").toString();
final int minExpectedRps = Integer.parseInt(options.getOrDefault("minExpectedRps", "1000").toString());
final int timeout = Integer.parseInt(options.getOrDefault("timeout", "1200000").toString());
final int warmups = Integer.parseInt(options.getOrDefault("warmups", "5").toString());
final int executions = Integer.parseInt(options.getOrDefault("executions", "10").toString());
final int nioPoolSize = Integer.parseInt(options.getOrDefault("nioPoolSize", "1").toString());
final int requests = Integer.parseInt(options.getOrDefault("requests", "10000").toString());
final int minConnectionPoolSize = Integer.parseInt(options.getOrDefault("minConnectionPoolSize", "256").toString());
final int maxConnectionPoolSize = Integer.parseInt(options.getOrDefault("maxConnectionPoolSize", "256").toString());
final int minSimultaneousUsagePerConnection = Integer.parseInt(options.getOrDefault("minSimultaneousUsagePerConnection", "8").toString());
final int maxSimultaneousUsagePerConnection = Integer.parseInt(options.getOrDefault("maxSimultaneousUsagePerConnection", "32").toString());
final int maxInProcessPerConnection = Integer.parseInt(options.getOrDefault("maxInProcessPerConnection", "64").toString());
final int minInProcessPerConnection = Integer.parseInt(options.getOrDefault("minInProcessPerConnection", "16").toString());
final int maxWaitForConnection = Integer.parseInt(options.getOrDefault("maxWaitForConnection", "3000").toString());
final int workerPoolSize = Integer.parseInt(options.getOrDefault("workerPoolSize", Runtime.getRuntime().availableProcessors() * 2).toString());
final int tooSlowThreshold = Integer.parseInt(options.getOrDefault("tooSlowThreshold", "125").toString());
final String channelizer = options.getOrDefault("channelizer", Channelizer.WebSocketChannelizer.class.getName()).toString();
final String serializer = options.getOrDefault("serializer", Serializers.GRAPHBINARY_V1.name()).toString();
final boolean exercise = Boolean.parseBoolean(options.getOrDefault("exercise", "false").toString());
final String script = options.getOrDefault("script", "1+1").toString();
final Cluster cluster = Cluster.build(host)
.minConnectionPoolSize(minConnectionPoolSize)
.maxConnectionPoolSize(maxConnectionPoolSize)
.minSimultaneousUsagePerConnection(minSimultaneousUsagePerConnection)
.maxSimultaneousUsagePerConnection(maxSimultaneousUsagePerConnection)
.minInProcessPerConnection(minInProcessPerConnection)
.maxInProcessPerConnection(maxInProcessPerConnection)
.nioPoolSize(nioPoolSize)
.channelizer(channelizer)
.maxWaitForConnection(maxWaitForConnection)
.serializer(Serializers.valueOf(serializer))
.workerPoolSize(workerPoolSize).create();
try {
if (TestType.LATENCY == testType) {
System.out.println("-----------------------LATENCY TEST SELECTED----------------------");
} else {
System.out.println("---------------------THROUGHPUT TEST SELECTED---------------------");
}
if (exercise) {
System.out.println("--------------------------INITIALIZATION--------------------------");
final Client client = cluster.connect();
client.submit("graph.clear()").all().join();
System.out.println("Cleared existing 'graph'");
client.submit("TinkerFactory.generateModern(graph)").all().join();
client.close();
System.out.println("Modern graph loaded");
}
if (TestType.THROUGHPUT == testType) {
final Object fileName = options.get("store");
final File f = null == fileName ? null : new File(fileName.toString());
if (f != null && f.length() == 0) {
try (final PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter(f, true)))) {
writer.println("parallelism\tnioPoolSize\tminConnectionPoolSize\tmaxConnectionPoolSize\tminSimultaneousUsagePerConnection\tmaxSimultaneousUsagePerConnection\tminInProcessPerConnection\tmaxInProcessPerConnection\tworkerPoolSize\trequestPerSecond");
}
}
// not much point to continuing with a line of tests if we can't get at least minExpectedRps.
final AtomicBoolean meetsRpsExpectation = new AtomicBoolean(true);
System.out.println("---------------------------WARMUP CYCLE---------------------------");
for (int ix = 0; ix < warmups && meetsRpsExpectation.get(); ix++) {
final long averageRequestsPerSecond = new ProfilingApplication("warmup-" + (ix + 1), cluster, 1000, executor, script, tooSlowThreshold, exercise).executeThroughput();
meetsRpsExpectation.set(averageRequestsPerSecond > minExpectedRps);
TimeUnit.SECONDS.sleep(1); // pause between executions
}
final AtomicBoolean exceededTimeout = new AtomicBoolean(false);
long totalRequestsPerSecond = 0;
// no need to execute this if we didn't pass the basic expectation in the warmups
if (exercise || meetsRpsExpectation.get()) {
final long start = System.nanoTime();
System.out.println("----------------------------TEST CYCLE----------------------------");
for (int ix = 0; ix < executions && !exceededTimeout.get(); ix++) {
totalRequestsPerSecond += new ProfilingApplication("test-" + (ix + 1), cluster, requests, executor, script, tooSlowThreshold, exercise).executeThroughput();
exceededTimeout.set((System.nanoTime() - start) > TimeUnit.NANOSECONDS.convert(timeout, TimeUnit.MILLISECONDS));
TimeUnit.SECONDS.sleep(1); // pause between executions
}
}
final int averageRequestPerSecond = !meetsRpsExpectation.get() || exceededTimeout.get() ? 0 : Math.round(totalRequestsPerSecond / executions);
System.out.println(String.format("avg req/sec: %s", averageRequestPerSecond));
if (f != null) {
try (final PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter(f, true)))) {
writer.println(String.join("\t", String.valueOf(parallelism), String.valueOf(nioPoolSize), String.valueOf(minConnectionPoolSize), String.valueOf(maxConnectionPoolSize), String.valueOf(minSimultaneousUsagePerConnection), String.valueOf(maxSimultaneousUsagePerConnection), String.valueOf(minInProcessPerConnection), String.valueOf(maxInProcessPerConnection), String.valueOf(workerPoolSize), String.valueOf(averageRequestPerSecond)));
}
}
} else if (TestType.LATENCY == testType) {
final AtomicBoolean meetsTimeoutExpectation = new AtomicBoolean(true);
System.out.println("---------------------------WARMUP CYCLE---------------------------");
for (int ix = 0; ix < warmups && meetsTimeoutExpectation.get(); ix++) {
final double latency = new ProfilingApplication("warmup-" + (ix + 1), cluster, 1000, executor, script, tooSlowThreshold, exercise).executeLatency();
meetsTimeoutExpectation.set(latency < timeout);
TimeUnit.SECONDS.sleep(1); // pause between executions
}
final AtomicBoolean exceededTimeout = new AtomicBoolean(false);
double totalTime = 0;
// no need to execute this if we didn't pass the basic expectation in the warmups
if (exercise || meetsTimeoutExpectation.get()) {
final long start = System.nanoTime();
System.out.println("----------------------------TEST CYCLE----------------------------");
for (int ix = 0; ix < executions && !exceededTimeout.get(); ix++) {
totalTime += new ProfilingApplication("test-" + (ix + 1), cluster, requests, executor, script, tooSlowThreshold, exercise).executeLatency();
exceededTimeout.set((System.nanoTime() - start) > TimeUnit.NANOSECONDS.convert(timeout, TimeUnit.MILLISECONDS));
TimeUnit.SECONDS.sleep(1); // pause between executions
}
}
final double averageLatency = !meetsTimeoutExpectation.get() || exceededTimeout.get() ? 0 : (totalTime / executions);
System.out.println(String.format("avg latency (sec/req): %s", averageLatency));
} else {
System.out.println("Encountered unknown testType. Please enter a valid value and try again.");
}
if (!noExit) System.exit(0);
} catch (Exception ex) {
ex.printStackTrace();
if (!noExit) System.exit(1);
} finally {
executor.shutdown();
cluster.close();
}
}
}
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