This commit is contained in:
Mark Nellemann 2023-06-22 08:40:31 +02:00
parent 8795bd7d0f
commit 5b5cf3f372
7 changed files with 500 additions and 109 deletions

202
LICENSE Normal file
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@ -0,0 +1,202 @@
Apache License
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README.md Normal file
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# jPerf
Small utility to measure network performance.
## Requirements
You need Java (JRE) version 11 or later to run jperf.
## Usage Instructions
- Install the jperf package (*.deb*, *.rpm* or *.jar*) from [downloads](https://bitbucket.org/mnellemann/jperf/downloads/) or compile from source.
- Run **/opt/jperf/bin/jperf**, if installed from package
- Or as **java -jar /path/to/jperf.jar**
To change the temporary directory where disk-load files are written to, use the *-Djava.io.tmpdir=/mytempdir* option.
```shell
Usage: ...
```
## Development Information
You need Java (JDK) version 11 or later to build jperf.
### Build & Test
Use the gradle build tool, which will download all required dependencies:
```shell
./gradlew clean build run
```

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@ -7,15 +7,15 @@
*/
plugins {
// Apply the groovy plugin to also add support for Groovy (needed for Spock)
id 'java'
id 'groovy'
// Apply the application plugin to add support for building a CLI application in Java.
id 'application'
id "com.github.johnrengelman.shadow" version "7.1.2"
id "net.nemerosa.versioning" version "2.15.1"
id "com.netflix.nebula.ospackage" version "11.2.0"
}
repositories {
// Use Maven Central for resolving dependencies.
mavenCentral()
}
@ -46,3 +46,56 @@ tasks.named('test') {
// Use JUnit Platform for unit tests.
useJUnitPlatform()
}
jar {
manifest {
attributes(
'Created-By' : "Gradle ${gradle.gradleVersion}",
'Build-OS' : "${System.properties['os.name']} ${System.properties['os.arch']} ${System.properties['os.version']}",
'Build-Jdk' : "${System.properties['java.version']} (${System.properties['java.vendor']} ${System.properties['java.vm.version']})",
'Build-User' : System.properties['user.name'],
'Build-Version' : versioning.info.tag ?: (versioning.info.branch + "-" + versioning.info.build),
'Build-Revision' : versioning.info.commit,
'Build-Timestamp': new Date().format("yyyy-MM-dd'T'HH:mm:ss.SSSZ").toString(),
)
}
}
apply plugin: 'com.netflix.nebula.ospackage'
ospackage {
packageName = 'jperf'
release = '1'
user = 'root'
packager = "Mark Nellemann <mark.nellemann@gmail.com>"
into '/opt/jperf'
from(shadowJar.outputs.files) {
into 'lib'
}
from('build/scriptsShadow') {
into 'bin'
}
from(['README.md', 'LICENSE']) {
into 'doc'
}
}
buildDeb {
dependsOn build, startShadowScripts
}
buildRpm {
dependsOn build, startShadowScripts
os = org.redline_rpm.header.Os.LINUX
}
tasks.register("packages") {
group "build"
dependsOn ":buildDeb"
dependsOn ":buildRpm"
}

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@ -8,6 +8,9 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import picocli.CommandLine;
import picocli.CommandLine.Command;
import java.io.IOException;
import java.net.SocketException;
import java.util.concurrent.Callable;
@Command(name = "jperf", mixinStandardHelpOptions = true, version = "0.1",
@ -16,62 +19,45 @@ public class App implements Callable<Integer> {
final Logger log = LoggerFactory.getLogger(App.class);
@CommandLine.Option(names = { "-s", "--pkt-size" }, paramLabel = "SIZE", description = "datagram size")
int packetSize = 1500;
@CommandLine.Option(names = { "-n", "--pkt-num" }, paramLabel = "NUM", description = "datagrams to send")
int packetCount = 100;
@CommandLine.Option(names = { "-c", "--connect" }, paramLabel = "SERVER", description = "run client and connect to remote server")
String remoteServer;
@CommandLine.Option(names = { "-s", "--server" }, description = "run server and wait for client")
boolean runServer = false;
@CommandLine.Option(names = { "-l", "--pkt-size" }, paramLabel = "SIZE", description = "datagram size in bytes, max 65507")
//int packetSize = 16384; // Min: 256 Max: 65507
int packetSize = 65507; // Min: 256 Max: 65507
@CommandLine.Option(names = { "-n", "--pkt-num" }, paramLabel = "NUM", description = "number of packets to send")
int packetCount = 5000;
@CommandLine.Option(names = { "-p", "--port" }, paramLabel = "PORT", description = "network port")
int port = 4445;
@CommandLine.Option(names = { "-w", "--send-wait" }, paramLabel = "MILLISEC", description = "delay in millis between sending packets")
long sendWait = 3;
@Override
public Integer call() throws Exception { // your business logic goes here...
// Start server
UdpServer udpServer = new UdpServer(port);
udpServer.start();
if(runServer) {
runServer();
}
long sequence = 0;
// Start client and send some messages
UdpClient udpClient = new UdpClient("localhost", port);
// Start datagram
Datagram datagram = new Datagram(DataType.HANDSHAKE.getValue(), packetSize, sequence++);
udpClient.send(datagram);
Thread.sleep(100);
// TODO: Wait for ACK
datagram = udpClient.receive();
if(datagram.getType() != DataType.ACK.getValue()) {
log.warn("No ACK!");
return -1;
if(remoteServer != null) {
runClient(remoteServer);
}
// Data datagrams ...
for(int i = 0; i < packetCount; i++) {
datagram = new Datagram(DataType.DATA.getValue(), packetSize, sequence++);
udpClient.send(datagram);
//Thread.sleep(50);
}
// End datagram
Thread.sleep(500);
datagram = new Datagram(DataType.END.getValue(), packetSize, sequence++);
udpClient.send(datagram);
udpClient.close();
Thread.sleep(1500);
//udpServer.printSummary();
return 0;
}
// this example implements Callable, so parsing, error handling and handling user
// requests for usage help or version help can be done with one line of code.
public static void main(String... args) {
@ -79,4 +65,57 @@ public class App implements Callable<Integer> {
System.exit(exitCode);
}
private void runClient(String remoteHost) throws InterruptedException, IOException {
long sequence = 0;
// Start client and send some messages
UdpClient udpClient = new UdpClient(remoteHost, port);
// Start datagram
Datagram datagram = new Datagram(DataType.HANDSHAKE.getValue(), packetSize, sequence++, packetCount);
udpClient.send(datagram);
Thread.sleep(100);
// TODO: Wait for ACK
datagram = udpClient.receive();
if(datagram.getType() != DataType.ACK.getValue()) {
log.warn("No ACK!");
return;
}
// Data datagrams ...
for(int i = 0; i < packetCount; i++) {
datagram = new Datagram(DataType.DATA.getValue(), packetSize, sequence++, packetCount);
udpClient.send(datagram);
Thread.sleep(sendWait);
}
// End datagram
Thread.sleep(100);
datagram = new Datagram(DataType.END.getValue(), packetSize, sequence++, packetCount);
udpClient.send(datagram);
// TODO: Wait for ACK
datagram = udpClient.receive();
if(datagram.getType() != DataType.ACK.getValue()) {
log.warn("No ACK!");
return;
}
udpClient.close();
Thread.sleep(1000);
udpClient.printStatistics();
}
private void runServer() throws SocketException, InterruptedException {
// Start server
UdpServer udpServer = new UdpServer(port);
udpServer.start();
udpServer.join();
}
}

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@ -4,6 +4,7 @@ import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.Random;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -15,7 +16,7 @@ import org.slf4j.LoggerFactory;
* <------------------------- HEADER 32 bytes --------------> <---------- DATA min 32 bytes -------->
* _long _int _int _long _long
* 8_bytes 4_bytes 4_bytes 8_bytes 8_bytes
* MAGIC-ID TYPE LENGTH SEQUENCE TIMESTAMP
* MAGIC-ID TYPE LENGTH CUR_PKT MAX_PKT
*
*/
@ -23,6 +24,8 @@ public class Datagram {
final Logger log = LoggerFactory.getLogger(Datagram.class);
private final Random random = new Random();
private final int HEADER_LENGTH = 32;
private final byte[] MAGIC_ID = "jPerfTok".getBytes(StandardCharsets.UTF_8); // Must be 8-bytes
@ -30,8 +33,8 @@ public class Datagram {
private final int type;
private final int length;
private final int realLength;
private final long sequence;
private final long timestamp;
private final long curPkt;
private final long maxPkt;
private final byte[] data;
@ -39,16 +42,16 @@ public class Datagram {
* Create new empty datagram
* @param type
* @param length
* @param sequence
* @param currentPkt
*/
public Datagram(int type, int length, long sequence) {
public Datagram(int type, int length, long currentPkt, long maxPkt) {
log.debug("Datagram() - of type: {}, length: {}, sequence: {}", type, length, sequence);
log.debug("Datagram() - of type: {}, length: {}, sequence: {}", type, length, currentPkt, maxPkt);
this.type = type;
this.length = length;
this.sequence = sequence;
this.timestamp = System.currentTimeMillis();
this.curPkt = currentPkt;
this.maxPkt = maxPkt;
if(type == DataType.DATA.getValue()) {
realLength = length;
@ -57,6 +60,8 @@ public class Datagram {
realLength = HEADER_LENGTH * 2;
data = new byte[HEADER_LENGTH * 2];
}
//random.nextBytes(data);
}
@ -80,8 +85,8 @@ public class Datagram {
// Order is importent when assembling header fields like this
type = buffer.getInt();
length = buffer.getInt();
sequence = buffer.getLong();
timestamp = buffer.getLong();
curPkt = buffer.getLong();
maxPkt = buffer.getLong();
realLength = length;
if(type == DataType.DATA.getValue()) {
@ -103,15 +108,15 @@ public class Datagram {
public byte[] getPayload() throws IOException {
log.debug("getPayload() - with type: {}, length: {}, sequence: {}", type, length, sequence);
log.debug("getPayload() - with type: {}, length: {}, sequence: {}", type, length, curPkt);
ByteBuffer buffer = ByteBuffer.allocate(data.length + HEADER_LENGTH);
// Order is important
buffer.put(MAGIC_ID);
buffer.putInt(type);
buffer.putInt(length);
buffer.putLong(sequence);
buffer.putLong(timestamp);
buffer.putLong(curPkt);
buffer.putLong(maxPkt);
buffer.put(data);
@ -124,8 +129,12 @@ public class Datagram {
}
public long getSequence() {
return sequence;
public long getCurPkt() {
return curPkt;
}
public long getMaxPkt() {
return maxPkt;
}

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@ -6,6 +6,7 @@ import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.time.Instant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -16,10 +17,12 @@ public class UdpClient {
private final int port;
private final InetAddress address;
private DatagramSocket socket;
private final DatagramSocket socket;
private byte[] buf = new byte[256];
private long packetsSent = 0;
private long bytesSent = 0;
public UdpClient(String hostname, int port) throws UnknownHostException, SocketException {
log.info("UdpClient() - target: {}, port: {}", hostname, port);
@ -31,6 +34,8 @@ public class UdpClient {
public void send(Datagram datagram) throws IOException {
DatagramPacket packet = new DatagramPacket(datagram.getPayload(), datagram.getRealLength(), address, port);
socket.send(packet);
packetsSent++;
bytesSent += datagram.getRealLength();
}
public Datagram receive() throws IOException {
@ -54,4 +59,7 @@ public class UdpClient {
socket.close();
}
public void printStatistics() {
System.out.printf("%s sent: %d pkts\t %d B\t %d KB\t %d MB\n", Instant.now().toString(), packetsSent, bytesSent, bytesSent/1000, bytesSent/1_000_000);
}
}

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@ -5,6 +5,8 @@ import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.time.Duration;
import java.time.Instant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -15,61 +17,25 @@ public class UdpServer extends Thread {
private final DatagramSocket socket;
private boolean running;
private byte[] buf = new byte[256];
long pktsReceived, pktsReceivedTotal = 0;
long bytesReceived, bytesReceivedTotal = 0;
long bytesPerSec, pktsPerSec = 0;
public UdpServer(int port) throws SocketException {
log.info("UdpServer() - port: {}", port);
log.info("UdpServer()");
socket = new DatagramSocket(port);
}
public void run() {
running = true;
long thisSequence = 0;
long lastSequence = 0;
boolean running = true;
try {
while (running) {
DatagramPacket packet = new DatagramPacket(buf, buf.length);
socket.receive(packet);
InetAddress address = packet.getAddress();
int port = packet.getPort();
log.debug("run() - buffer is: {}", buf.length);
Datagram datagram = new Datagram(buf);
thisSequence = datagram.getSequence();
if(datagram.getType() == DataType.HANDSHAKE.getValue()) {
log.info("Handshake from ... {}", address);
// Setup to receive larger datagrams
buf = new byte[datagram.getLength()];
// TODO: Send ACK
Datagram responseDatagram = new Datagram(DataType.ACK.getValue(), 32, datagram.getSequence());
packet = new DatagramPacket(responseDatagram.getPayload(), responseDatagram.getLength(), address, port);
socket.send(packet);
}
if(datagram.getType() == DataType.END.getValue()) {
running = false;
}
if(datagram.getType() == DataType.DATA.getValue()) {
if(thisSequence == lastSequence + 1) {
log.info("Data .... size: {}, sequence: {}", datagram.getLength(), thisSequence);
} else {
log.warn("Data .... out of sequence: {} vs {}", thisSequence, lastSequence);
}
}
lastSequence = thisSequence;
session();
}
socket.close();
@ -80,14 +46,97 @@ public class UdpServer extends Thread {
}
private void ack() {
public void printStatistics() {
// Because we do this every second ...
bytesPerSec = bytesReceived;
pktsPerSec = pktsReceived;
System.out.printf("%s recv: %d pkt/s\t %d B/s\t %d KB/s\t %d MB/s\n", Instant.now().toString(), pktsPerSec, bytesPerSec, bytesPerSec/1_000, bytesPerSec/1_000_000);
pktsReceived = 0;
bytesReceived = 0;
}
public void printSummary() {
System.out.printf("%s recv: %d pkts\t %d B\t %d KB\t %d MB\n", Instant.now().toString(), pktsReceivedTotal, bytesReceivedTotal, bytesReceivedTotal/1_000, bytesReceivedTotal/1_000_000);
}
public void session() throws IOException {
boolean running = true;
boolean ackEnd = false;
long thisSequence, lastSequence = 0;
Instant startInstant = Instant.now();
Instant checkInstant;
while (running) {
DatagramPacket packet = new DatagramPacket(buf, buf.length);
socket.receive(packet);
InetAddress address = packet.getAddress();
int port = packet.getPort();
Datagram datagram = new Datagram(buf);
thisSequence = datagram.getCurPkt();
if(datagram.getType() == DataType.HANDSHAKE.getValue()) {
log.info("Handshake from ... {}, length: {}", address, datagram.getLength());
// Setup to receive larger datagrams
buf = new byte[datagram.getLength()];
// Send ACK
Datagram responseDatagram = new Datagram(DataType.ACK.getValue(), 32, datagram.getCurPkt(), 1);
packet = new DatagramPacket(responseDatagram.getPayload(), responseDatagram.getLength(), address, port);
socket.send(packet);
}
private void receive(String msg) {
log.info("receive() - msg: {}", msg);
if(datagram.getType() == DataType.DATA.getValue()) {
bytesReceived += datagram.getLength();
bytesReceivedTotal += datagram.getLength();
if(thisSequence == lastSequence + 1) {
//log.info("Data .... size: {}, sequence: {}", datagram.getLength(), thisSequence);
} else {
//log.warn("Data .... out of sequence: {} vs {}", thisSequence, lastSequence);
}
}
if(datagram.getType() == DataType.END.getValue()) {
ackEnd = true;
}
// Every second
checkInstant = Instant.now();
if(Duration.between(startInstant, checkInstant).toSeconds() >= 1) {
printStatistics();
startInstant = checkInstant;
}
if(ackEnd && pktsReceivedTotal > datagram.getMaxPkt()) {
// Send ACK
Datagram responseDatagram = new Datagram(DataType.ACK.getValue(), 32, datagram.getCurPkt(), 1);
packet = new DatagramPacket(responseDatagram.getPayload(), responseDatagram.getLength(), address, port);
socket.send(packet);
printSummary();
running = false;
}
lastSequence = thisSequence;
pktsReceived++;
pktsReceivedTotal++;
}
}
}