b47fc77522
This pull request introduces the new default ByteBufAllocator implementation based on jemalloc, with a some differences: * Minimum possible buffer capacity is 16 (jemalloc: 2) * Uses binary heap with random branching (jemalloc: red-black tree) * No thread-local cache yet (jemalloc has thread-local cache) * Default page size is 8 KiB (jemalloc: 4 KiB) * Default chunk size is 16 MiB (jemalloc: 2 MiB) * Cannot allocate a buffer bigger than the chunk size (jemalloc: possible) because we don't have control over memory layout in Java. A user can work around this issue by creating a composite buffer, but it's not always a feasible option. Although 16 MiB is a pretty big default, a user's handler might need to deal with the bounded buffers when the user wants to deal with a large message. Also, to ensure the new allocator performs good enough, I wrote a microbenchmark for it and made it a dedicated Maven module. It uses Google's Caliper framework to run and publish the test result (example) Miscellaneous changes: * Made some ByteBuf implementations public so that those who implements a new allocator can make use of them. * Added ByteBufAllocator.compositeBuffer() and its variants. * ByteBufAllocator.ioBuffer() creates a buffer with 0 capacity.
99 lines
3.1 KiB
XML
99 lines
3.1 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!--
|
|
~ Copyright 2012 The Netty Project
|
|
~
|
|
~ The Netty Project 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.
|
|
-->
|
|
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
|
|
|
|
<modelVersion>4.0.0</modelVersion>
|
|
<parent>
|
|
<groupId>io.netty</groupId>
|
|
<artifactId>netty-parent</artifactId>
|
|
<version>4.0.1.Alpha8-SNAPSHOT</version>
|
|
</parent>
|
|
|
|
<artifactId>netty-microbench</artifactId>
|
|
<packaging>jar</packaging>
|
|
|
|
<name>Netty/Microbench</name>
|
|
|
|
<dependencies>
|
|
<dependency>
|
|
<groupId>${project.groupId}</groupId>
|
|
<artifactId>netty-handler</artifactId>
|
|
<version>${project.version}</version>
|
|
</dependency>
|
|
<dependency>
|
|
<groupId>${project.groupId}</groupId>
|
|
<artifactId>netty-codec-http</artifactId>
|
|
<version>${project.version}</version>
|
|
</dependency>
|
|
<dependency>
|
|
<groupId>com.google.caliper</groupId>
|
|
<artifactId>caliper</artifactId>
|
|
</dependency>
|
|
</dependencies>
|
|
|
|
<build>
|
|
<plugins>
|
|
<plugin>
|
|
<artifactId>maven-deploy-plugin</artifactId>
|
|
<configuration>
|
|
<skip>true</skip>
|
|
</configuration>
|
|
</plugin>
|
|
<plugin>
|
|
<artifactId>maven-antrun-plugin</artifactId>
|
|
<executions>
|
|
<execution>
|
|
<id>upload-caliper-reports</id>
|
|
<phase>deploy</phase>
|
|
<goals>
|
|
<goal>run</goal>
|
|
</goals>
|
|
<configuration>
|
|
<failOnError>false</failOnError>
|
|
<target>
|
|
<taskdef resource="net/sf/antcontrib/antlib.xml" />
|
|
<if>
|
|
<available file="${user.home}/.caliperrc"/>
|
|
<then>
|
|
<java
|
|
classname="com.google.caliper.Runner"
|
|
classpathref="maven.test.classpath">
|
|
<arg value="--uploadResults"/>
|
|
<arg value="${project.build.directory}/caliper-reports"/>
|
|
</java>
|
|
</then>
|
|
<else>
|
|
<echo>
|
|
No .caliperrc file found; not uploading the benchmark report.
|
|
Please follow the instructions at:
|
|
|
|
* http://code.google.com/p/caliper/wiki/OnlineResults
|
|
|
|
to upload and browse the benchmark results.
|
|
</echo>
|
|
</else>
|
|
</if>
|
|
</target>
|
|
</configuration>
|
|
</execution>
|
|
</executions>
|
|
</plugin>
|
|
</plugins>
|
|
</build>
|
|
</project>
|
|
|