/*
* Copyright 2013 Peter Lawrey
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.higherfrequencytrading.chronicle.impl;
import com.higherfrequencytrading.chronicle.Excerpt;
import java.io.IOException;
import static com.higherfrequencytrading.chronicle.impl.GlobalSettings.*;
import static junit.framework.Assert.assertEquals;
/**
* @author peter.lawrey
* <p>
* on a 4.6 GHz, i7-2600, Centos 6.2 -Dtest.size=100
* Took 14.332 seconds to write/read 200,000,000 entries, rate was 14.0 M entries/sec - ByteBuffer (tmpfs)
* Took 10.174 seconds to write/read 200,000,000 entries, rate was 19.7 M entries/sec - Using Unsafe (tmpfs)
* </p>
* Took 24.501 seconds to write/read 400,000,000 entries, rate was 16.3 M entries/sec : -Dtest.size=200 (22 GB on a 16 GB machine)
* Took 73.016 seconds to write/read 1,000,000,000 entries, rate was 13.7 M entries/sec -Dtest.size=500 (56 GB on a 16 GB machine)
*/
public class BaseIndexedChronicleThroughputMain {
public static void main(String... args) throws IOException, InterruptedException {
final String basePath = BASE_DIR + "request";
final String basePath2 = BASE_DIR + "response";
deleteOnExit(basePath);
deleteOnExit(basePath2);
IndexedChronicle tsc = new IndexedChronicle(basePath);
tsc.useUnsafe(USE_UNSAFE);
IndexedChronicle tsc2 = new IndexedChronicle(basePath2);
tsc2.useUnsafe(USE_UNSAFE);
tsc.clear();
Thread t = new Thread(new Runnable() {
@Override
public void run() {
try {
StringBuilder sb = new StringBuilder();
final IndexedChronicle tsc = new IndexedChronicle(basePath);
tsc.useUnsafe(USE_UNSAFE);
final IndexedChronicle tsc2 = new IndexedChronicle(basePath2);
tsc2.useUnsafe(USE_UNSAFE);
tsc2.clear();
Excerpt excerpt = tsc.createExcerpt();
Excerpt excerpt2 = tsc2.createExcerpt();
for (int i = 0; i < RUNS; i++) {
do {
busyWait();
} while (!excerpt.index(i));
char type = excerpt.readChar();
if ('T' != type)
assertEquals('T', type);
int n = excerpt.readInt();
if (i != n)
assertEquals(i, n);
excerpt.readChars(sb);
excerpt.finish();
excerpt2.startExcerpt(8);
excerpt2.writeChar('R');
excerpt2.writeInt(n);
excerpt2.writeShort(-1);
excerpt2.finish();
}
} catch (IOException e) {
e.printStackTrace();
}
}
});
t.start();
Excerpt excerpt = tsc.createExcerpt();
Excerpt excerpt2 = tsc2.createExcerpt();
long start = System.nanoTime();
int i2 = 0;
for (int i = 0; i < RUNS; i++) {
excerpt.startExcerpt(32);
excerpt.writeChar('T');
excerpt.writeInt(i);
excerpt.writeChars("Hello World!");
excerpt.finish();
while (excerpt2.index(i2)) {
char type = excerpt2.readChar();
if ('R' != type)
assertEquals('R', type);
int n = excerpt2.readInt();
if (i2 != n)
assertEquals(i2, n);
excerpt2.finish();
i2++;
}
}
for (; i2 < RUNS; i2++) {
do {
busyWait();
} while (!excerpt2.index(i2));
char type = excerpt2.readChar();
if ('R' != type)
assertEquals('R', type);
int n = excerpt2.readInt();
if (i2 != n)
assertEquals(i2, n);
excerpt2.finish();
}
t.join();
long time = System.nanoTime() - start;
tsc.close();
tsc2.close();
System.out.printf("Took %.3f seconds to write/read %,d entries, rate was %.1f M entries/sec%n", time / 1e9, 2 * RUNS, 2 * RUNS * 1e3 / time);
}
static void busyWait() {
/* try again */
}
}