diff options
author | kenton@google.com <kenton@google.com@630680e5-0e50-0410-840e-4b1c322b438d> | 2009-11-03 18:20:01 +0000 |
---|---|---|
committer | kenton@google.com <kenton@google.com@630680e5-0e50-0410-840e-4b1c322b438d> | 2009-11-03 18:20:01 +0000 |
commit | c0abf64e53d5aa761749db0d3e5bb8d8adabd1b7 (patch) | |
tree | 9a713e3a75aa9f1df95f8d56f44c081c8fb91647 /benchmarks/ProtoBench.java | |
parent | f85d70f9e47c3ec5f3a104ec70d062540023267a (diff) | |
download | protobuf-c0abf64e53d5aa761749db0d3e5bb8d8adabd1b7.tar.gz protobuf-c0abf64e53d5aa761749db0d3e5bb8d8adabd1b7.tar.bz2 protobuf-c0abf64e53d5aa761749db0d3e5bb8d8adabd1b7.zip |
Convert ProtoBench.java to unix-style line endings.
Diffstat (limited to 'benchmarks/ProtoBench.java')
-rw-r--r-- | benchmarks/ProtoBench.java | 354 |
1 files changed, 177 insertions, 177 deletions
diff --git a/benchmarks/ProtoBench.java b/benchmarks/ProtoBench.java index eaf6bfb0..1dffe1c1 100644 --- a/benchmarks/ProtoBench.java +++ b/benchmarks/ProtoBench.java @@ -1,177 +1,177 @@ -// Protocol Buffers - Google's data interchange format
-// Copyright 2009 Google Inc. All rights reserved.
-// http://code.google.com/p/protobuf/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package com.google.protocolbuffers;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.File;
-import java.io.IOException;
-import java.io.RandomAccessFile;
-import java.lang.reflect.Method;
-
-import com.google.protobuf.ByteString;
-import com.google.protobuf.CodedInputStream;
-import com.google.protobuf.Message;
-
-public class ProtoBench {
-
- private static final long MIN_SAMPLE_TIME_MS = 2 * 1000;
- private static final long TARGET_TIME_MS = 30 * 1000;
-
- private ProtoBench() {
- // Prevent instantiation
- }
-
- public static void main(String[] args) {
- if (args.length < 2 || (args.length % 2) != 0) {
- System.err.println("Usage: ProtoBench <descriptor type name> <input data>");
- System.err.println("The descriptor type name is the fully-qualified message name,");
- System.err.println("e.g. com.google.protocolbuffers.benchmark.Message1");
- System.err.println("(You can specify multiple pairs of descriptor type name and input data.)");
- System.exit(1);
- }
- boolean success = true;
- for (int i = 0; i < args.length; i += 2) {
- success &= runTest(args[i], args[i + 1]);
- }
- System.exit(success ? 0 : 1);
- }
-
- /**
- * Runs a single test. Error messages are displayed to stderr, and the return value
- * indicates general success/failure.
- */
- public static boolean runTest(String type, String file) {
- System.out.println("Benchmarking " + type + " with file " + file);
- final Message defaultMessage;
- try {
- Class<?> clazz = Class.forName(type);
- Method method = clazz.getDeclaredMethod("getDefaultInstance");
- defaultMessage = (Message) method.invoke(null);
- } catch (Exception e) {
- // We want to do the same thing with all exceptions. Not generally nice,
- // but this is slightly different.
- System.err.println("Unable to get default message for " + type);
- return false;
- }
-
- try {
- final byte[] inputData = readAllBytes(file);
- final ByteArrayInputStream inputStream = new ByteArrayInputStream(inputData);
- final ByteString inputString = ByteString.copyFrom(inputData);
- final Message sampleMessage = defaultMessage.newBuilderForType().mergeFrom(inputString).build();
- benchmark("Serialize to byte string", inputData.length, new Action() {
- public void execute() { sampleMessage.toByteString(); }
- });
- benchmark("Serialize to byte array", inputData.length, new Action() {
- public void execute() { sampleMessage.toByteArray(); }
- });
- benchmark("Serialize to memory stream", inputData.length, new Action() {
- public void execute() throws IOException {
- sampleMessage.writeTo(new ByteArrayOutputStream());
- }
- });
- benchmark("Deserialize from byte string", inputData.length, new Action() {
- public void execute() throws IOException {
- defaultMessage.newBuilderForType().mergeFrom(inputString).build();
- }
- });
- benchmark("Deserialize from byte array", inputData.length, new Action() {
- public void execute() throws IOException {
- defaultMessage.newBuilderForType()
- .mergeFrom(CodedInputStream.newInstance(inputData)).build();
- }
- });
- benchmark("Deserialize from memory stream", inputData.length, new Action() {
- public void execute() throws IOException {
- defaultMessage.newBuilderForType()
- .mergeFrom(CodedInputStream.newInstance(inputStream)).build();
- inputStream.reset();
- }
- });
- System.out.println();
- return true;
- } catch (Exception e) {
- System.err.println("Error: " + e.getMessage());
- System.err.println("Detailed exception information:");
- e.printStackTrace(System.err);
- return false;
- }
- }
-
- private static void benchmark(String name, long dataSize, Action action) throws IOException {
- // Make sure it's JITted "reasonably" hard before running the first progress test
- for (int i=0; i < 100; i++) {
- action.execute();
- }
-
- // Run it progressively more times until we've got a reasonable sample
- int iterations = 1;
- long elapsed = timeAction(action, iterations);
- while (elapsed < MIN_SAMPLE_TIME_MS) {
- iterations *= 2;
- elapsed = timeAction(action, iterations);
- }
-
- // Upscale the sample to the target time. Do this in floating point arithmetic
- // to avoid overflow issues.
- iterations = (int) ((TARGET_TIME_MS / (double) elapsed) * iterations);
- elapsed = timeAction(action, iterations);
- System.out.println(name + ": " + iterations + " iterations in "
- + (elapsed/1000f) + "s; "
- + (iterations * dataSize) / (elapsed * 1024 * 1024 / 1000f)
- + "MB/s");
- }
-
- private static long timeAction(Action action, int iterations) throws IOException {
- System.gc();
- long start = System.currentTimeMillis();
- for (int i = 0; i < iterations; i++) {
- action.execute();
- }
- long end = System.currentTimeMillis();
- return end - start;
- }
-
- private static byte[] readAllBytes(String filename) throws IOException {
- RandomAccessFile file = new RandomAccessFile(new File(filename), "r");
- byte[] content = new byte[(int) file.length()];
- file.readFully(content);
- return content;
- }
-
- /**
- * Interface used to capture a single action to benchmark.
- */
- interface Action {
- void execute() throws IOException;
- }
-}
+// Protocol Buffers - Google's data interchange format +// Copyright 2009 Google Inc. All rights reserved. +// http://code.google.com/p/protobuf/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +package com.google.protocolbuffers; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.File; +import java.io.IOException; +import java.io.RandomAccessFile; +import java.lang.reflect.Method; + +import com.google.protobuf.ByteString; +import com.google.protobuf.CodedInputStream; +import com.google.protobuf.Message; + +public class ProtoBench { + + private static final long MIN_SAMPLE_TIME_MS = 2 * 1000; + private static final long TARGET_TIME_MS = 30 * 1000; + + private ProtoBench() { + // Prevent instantiation + } + + public static void main(String[] args) { + if (args.length < 2 || (args.length % 2) != 0) { + System.err.println("Usage: ProtoBench <descriptor type name> <input data>"); + System.err.println("The descriptor type name is the fully-qualified message name,"); + System.err.println("e.g. com.google.protocolbuffers.benchmark.Message1"); + System.err.println("(You can specify multiple pairs of descriptor type name and input data.)"); + System.exit(1); + } + boolean success = true; + for (int i = 0; i < args.length; i += 2) { + success &= runTest(args[i], args[i + 1]); + } + System.exit(success ? 0 : 1); + } + + /** + * Runs a single test. Error messages are displayed to stderr, and the return value + * indicates general success/failure. + */ + public static boolean runTest(String type, String file) { + System.out.println("Benchmarking " + type + " with file " + file); + final Message defaultMessage; + try { + Class<?> clazz = Class.forName(type); + Method method = clazz.getDeclaredMethod("getDefaultInstance"); + defaultMessage = (Message) method.invoke(null); + } catch (Exception e) { + // We want to do the same thing with all exceptions. Not generally nice, + // but this is slightly different. + System.err.println("Unable to get default message for " + type); + return false; + } + + try { + final byte[] inputData = readAllBytes(file); + final ByteArrayInputStream inputStream = new ByteArrayInputStream(inputData); + final ByteString inputString = ByteString.copyFrom(inputData); + final Message sampleMessage = defaultMessage.newBuilderForType().mergeFrom(inputString).build(); + benchmark("Serialize to byte string", inputData.length, new Action() { + public void execute() { sampleMessage.toByteString(); } + }); + benchmark("Serialize to byte array", inputData.length, new Action() { + public void execute() { sampleMessage.toByteArray(); } + }); + benchmark("Serialize to memory stream", inputData.length, new Action() { + public void execute() throws IOException { + sampleMessage.writeTo(new ByteArrayOutputStream()); + } + }); + benchmark("Deserialize from byte string", inputData.length, new Action() { + public void execute() throws IOException { + defaultMessage.newBuilderForType().mergeFrom(inputString).build(); + } + }); + benchmark("Deserialize from byte array", inputData.length, new Action() { + public void execute() throws IOException { + defaultMessage.newBuilderForType() + .mergeFrom(CodedInputStream.newInstance(inputData)).build(); + } + }); + benchmark("Deserialize from memory stream", inputData.length, new Action() { + public void execute() throws IOException { + defaultMessage.newBuilderForType() + .mergeFrom(CodedInputStream.newInstance(inputStream)).build(); + inputStream.reset(); + } + }); + System.out.println(); + return true; + } catch (Exception e) { + System.err.println("Error: " + e.getMessage()); + System.err.println("Detailed exception information:"); + e.printStackTrace(System.err); + return false; + } + } + + private static void benchmark(String name, long dataSize, Action action) throws IOException { + // Make sure it's JITted "reasonably" hard before running the first progress test + for (int i=0; i < 100; i++) { + action.execute(); + } + + // Run it progressively more times until we've got a reasonable sample + int iterations = 1; + long elapsed = timeAction(action, iterations); + while (elapsed < MIN_SAMPLE_TIME_MS) { + iterations *= 2; + elapsed = timeAction(action, iterations); + } + + // Upscale the sample to the target time. Do this in floating point arithmetic + // to avoid overflow issues. + iterations = (int) ((TARGET_TIME_MS / (double) elapsed) * iterations); + elapsed = timeAction(action, iterations); + System.out.println(name + ": " + iterations + " iterations in " + + (elapsed/1000f) + "s; " + + (iterations * dataSize) / (elapsed * 1024 * 1024 / 1000f) + + "MB/s"); + } + + private static long timeAction(Action action, int iterations) throws IOException { + System.gc(); + long start = System.currentTimeMillis(); + for (int i = 0; i < iterations; i++) { + action.execute(); + } + long end = System.currentTimeMillis(); + return end - start; + } + + private static byte[] readAllBytes(String filename) throws IOException { + RandomAccessFile file = new RandomAccessFile(new File(filename), "r"); + byte[] content = new byte[(int) file.length()]; + file.readFully(content); + return content; + } + + /** + * Interface used to capture a single action to benchmark. + */ + interface Action { + void execute() throws IOException; + } +} |