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8325340: Add ASCII fast-path to Data-/ObjectInputStream.readUTF

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Reviewed-by: rgiulietti, bpb, rriggs
This commit is contained in:
Claes Redestad 2024-02-26 16:05:18 +00:00
parent 3780ad3133
commit 9a9cfbe0ba
4 changed files with 362 additions and 24 deletions
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186
test/micro/org/openjdk/bench/java/io/ObjectInputStreamTest.java Normal file
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/*
* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.java.io;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
import org.openjdk.jmh.infra.Blackhole;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.TimeUnit;
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@Fork(value = 3, warmups = 0)
@Measurement(iterations = 5, time = 1)
@Warmup(iterations = 2, time = 2)
@State(Scope.Thread)
public class ObjectInputStreamTest {
private ByteArrayInputStream utfDataAsciiMixed;
private ByteArrayInputStream utfDataMixed;
private ByteArrayInputStream utfDataAsciiSmall;
private ByteArrayInputStream utfDataSmall;
private ByteArrayInputStream utfDataAsciiLarge;
private ByteArrayInputStream utfDataLarge;
// Overhead of creating an ObjectInputStream is significant, need to increase the number of data elements
// to balance work
private static final int REPEATS = 20;
@Setup(Level.Iteration)
public void setup() throws IOException, ClassNotFoundException, NoSuchMethodException, IllegalAccessException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream dataOut = new ObjectOutputStream(baos);
for (int i = 0; i < REPEATS; i++) {
dataOut.writeUTF("small");
dataOut.writeUTF("slightly longer string that is more likely to trigger use of simd intrinsics");
}
dataOut.flush();
utfDataAsciiMixed = new ByteArrayInputStream(baos.toByteArray());
baos = new ByteArrayOutputStream();
dataOut = new ObjectOutputStream(baos);
for (int i = 0; i < REPEATS; i++) {
dataOut.writeUTF("slightly longer string that is more likely to trigger use of simd intrinsics");
dataOut.writeUTF("slightly longer string that is more likely to trigger use of simd intrinsics");
}
dataOut.flush();
utfDataAsciiLarge = new ByteArrayInputStream(baos.toByteArray());
baos = new ByteArrayOutputStream();
dataOut = new ObjectOutputStream(baos);
for (int i = 0; i < REPEATS; i++) {
dataOut.writeUTF("smol");
dataOut.writeUTF("smally");
}
dataOut.flush();
utfDataAsciiSmall = new ByteArrayInputStream(baos.toByteArray());
baos = new ByteArrayOutputStream();
dataOut = new ObjectOutputStream(baos);
for (int i = 0; i < REPEATS; i++) {
dataOut.writeUTF("sm\u00FFll");
dataOut.writeUTF("slightly longer string th\u01F3t is more likely to trigger use of simd intrinsics");
}
dataOut.flush();
utfDataMixed = new ByteArrayInputStream(baos.toByteArray());
baos = new ByteArrayOutputStream();
dataOut = new ObjectOutputStream(baos);
for (int i = 0; i < REPEATS; i++) {
dataOut.writeUTF("sm\u00F3l");
dataOut.writeUTF("small\u0132");
}
dataOut.flush();
utfDataSmall = new ByteArrayInputStream(baos.toByteArray());
baos = new ByteArrayOutputStream();
dataOut = new ObjectOutputStream(baos);
for (int i = 0; i < REPEATS; i++) {
dataOut.writeUTF("slightly longer string that is more likely to trigg\u0131r use of simd intrinsics");
dataOut.writeUTF("slightly longer string th\u0131t is more likely to trigger use of simd intrinsics");
}
dataOut.flush();
utfDataLarge = new ByteArrayInputStream(baos.toByteArray());
}
@Benchmark
public void readUTFAsciiMixed(Blackhole bh) throws Exception {
utfDataAsciiMixed.reset();
ObjectInputStream ois = new ObjectInputStream(utfDataAsciiMixed);
for (int i = 0; i < REPEATS; i++) {
bh.consume(ois.readUTF());
bh.consume(ois.readUTF());
}
}
@Benchmark
public void readUTFAsciiSmall(Blackhole bh) throws Exception {
utfDataAsciiSmall.reset();
ObjectInputStream ois = new ObjectInputStream(utfDataAsciiSmall);
for (int i = 0; i < REPEATS; i++) {
bh.consume(ois.readUTF());
bh.consume(ois.readUTF());
}
}
@Benchmark
public void readUTFAsciiLarge(Blackhole bh) throws Exception {
utfDataAsciiLarge.reset();
ObjectInputStream ois = new ObjectInputStream(utfDataAsciiLarge);
for (int i = 0; i < REPEATS; i++) {
bh.consume(ois.readUTF());
bh.consume(ois.readUTF());
}
}
@Benchmark
public void readUTFMixed(Blackhole bh) throws Exception {
utfDataMixed.reset();
ObjectInputStream ois = new ObjectInputStream(utfDataMixed);
for (int i = 0; i < REPEATS; i++) {
bh.consume(ois.readUTF());
bh.consume(ois.readUTF());
}
}
@Benchmark
public void readUTFSmall(Blackhole bh) throws Exception {
utfDataSmall.reset();
ObjectInputStream ois = new ObjectInputStream(utfDataSmall);
for (int i = 0; i < REPEATS; i++) {
bh.consume(ois.readUTF());
bh.consume(ois.readUTF());
}
}
@Benchmark
public void readUTFLarge(Blackhole bh) throws Exception {
utfDataLarge.reset();
ObjectInputStream ois = new ObjectInputStream(utfDataLarge);
for (int i = 0; i < REPEATS; i++) {
bh.consume(ois.readUTF());
bh.consume(ois.readUTF());
}
}
}