zstan commented on code in PR #13529: URL: https://github.com/apache/ignite/pull/13529#discussion_r3950281131
########## modules/benchmarks/src/main/java/org/apache/ignite/internal/benchmarks/jmh/binary/JmhBinaryStringWriteBenchmark.java: ########## @@ -0,0 +1,166 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 org.apache.ignite.internal.benchmarks.jmh.binary; + +import org.apache.ignite.internal.benchmarks.jmh.runner.JmhIdeBenchmarkRunner; +import org.apache.ignite.internal.binary.StringWriter; +import org.apache.ignite.internal.binary.streams.BinaryOutputStream; +import org.apache.ignite.internal.binary.streams.BinaryStreams; +import org.openjdk.jmh.annotations.Benchmark; +import org.openjdk.jmh.annotations.BenchmarkMode; +import org.openjdk.jmh.annotations.Measurement; +import org.openjdk.jmh.annotations.OutputTimeUnit; +import org.openjdk.jmh.annotations.Param; +import org.openjdk.jmh.annotations.Setup; +import org.openjdk.jmh.annotations.State; +import org.openjdk.jmh.annotations.TearDown; +import org.openjdk.jmh.annotations.Warmup; +import org.openjdk.jmh.infra.Blackhole; +import org.openjdk.jmh.profile.GCProfiler; +import org.openjdk.jmh.runner.Runner; +import org.openjdk.jmh.runner.options.OptionsBuilder; + +import static java.util.concurrent.TimeUnit.NANOSECONDS; +import static java.util.concurrent.TimeUnit.SECONDS; +import static org.apache.ignite.IgniteCommonsSystemProperties.IGNITE_BINARY_STRING_ZERO_COPY; +import static org.openjdk.jmh.annotations.Mode.AverageTime; +import static org.openjdk.jmh.annotations.Scope.Thread; + +/** + * Compares zero-copy string serialization with the legacy serialization. + * @see org.apache.ignite.IgniteCommonsSystemProperties#IGNITE_BINARY_STRING_ZERO_COPY + */ +@State(Thread) +@OutputTimeUnit(NANOSECONDS) +@BenchmarkMode(AverageTime) +@Warmup(iterations = 5, time = 5, timeUnit = SECONDS) +@Measurement(iterations = 5, time = 10, timeUnit = SECONDS) +public class JmhBinaryStringWriteBenchmark { + /** */ + @Param({"true", "false"}) + private boolean zeroCopy; + + /** */ + @Param({"8", "64", "512", "4096"}) + private int len; + + /** */ + @Param({"ascii", "latin1", "cyrillic", "mixed"}) + private String content; + + /** */ + private BinaryOutputStream out; + + /** */ + private String str; + + /** */ + public static void main(String[] args) throws Exception { + OptionsBuilder builder = JmhIdeBenchmarkRunner.create() + .forks(1) + .benchmarks(JmhBinaryStringWriteBenchmark.class.getName()) + .profilers(GCProfiler.class) + .optionsBuilder(); + + new Runner(builder.build()).run(); + } + + /** */ + @Setup + public void setup() { + // Must be set before the first use of StringWriter in this JVM. + System.setProperty(IGNITE_BINARY_STRING_ZERO_COPY, String.valueOf(zeroCopy)); + + StringBuilder sb = new StringBuilder(len); + + for (int i = 0; sb.length() < len; i++) { + switch (content) { + case "ascii": + sb.append((char)('a' + i % 26)); + + break; + + case "latin1": + // Every 8th char is a Latin-1 char with the sign bit set. + sb.append(i % 8 == 7 ? (char)(0xC0 + i % 0x20) : (char)('a' + i % 26)); + + break; + + case "cyrillic": + sb.append((char)('\u0410' + i % 32)); + + break; + + case "mixed": + // ASCII, Latin-1, 2-byte, 3-byte chars and a surrogate pair. + switch (i % 5) { + case 0: + sb.append((char)('a' + i % 26)); + + break; + + case 1: + sb.append('\u00e9'); + + break; + + case 2: + sb.append('\u0416'); + + break; + + case 3: + sb.append('\u20ac'); + + break; + + default: + sb.append("\ud83d\ude00"); + } + + break; + + default: + throw new IllegalArgumentException("Unknown content type: " + content); + } + } + + str = sb.toString(); + + out = BinaryStreams.outputStream(4 * len + 64); Review Comment: I try to run it instead of master with fast refactoring for PlatformOutputStreamImpl (C++\.Net) like : and found a bit perf drop (in measurements !!!!) thus real performance test need to be executed. I changed: ``` long poolPtr = allocatePool(); long memPtr = allocatePooled(poolPtr, 10_000); PlatformMemory res = pool.get(memPtr); out = res.output(); //out = new PlatformAbstractMemory BinaryStreams.outputStream(4 * len + 64); ``` ``` PR Benchmark (content) (len) (zeroCopy) Mode Cnt Score Error Units JmhBinaryStringWriteBenchmark.writeString cyrillic 512 true avgt 5 523.005 ± 13.730 ns/op JmhBinaryStringWriteBenchmark.writeString:gc.alloc.rate cyrillic 512 true avgt 5 0.001 ± 0.001 MB/sec master Benchmark (content) (len) (zeroCopy) Mode Cnt Score Error Units JmhBinaryStringWriteBenchmark.writeString cyrillic 512 true avgt 5 443.634 ± 11.679 ns/op JmhBinaryStringWriteBenchmark.writeString:gc.alloc.rate cyrillic 512 true avgt 5 5572.091 ± 145.617 MB/sec ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. 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