Optimizing Eclipse performances

I just published an article about Eclipse perfomance optimisation, especially with the Scala IDE plugin, here : http://blog.normation.com/2010/05/24/optimizing-eclipse-performances/

This article mostly talk about generalities and gives some reference links about JVM tunning. It also contains some eclipse.ini examples, and point to reference topic on that subject.

A second, more involved article in which I will explain how to put your workspace into ram (and keep it synchronizes to disk, of course) will follow in a couple of days (ok, perhaps packed in weeks, depending of my work...).

Of course, any information about Eclipse optimization is much appreciated !

Maven2 bootstrap pom.xml for Scala with SLF4J and no-commons-logging

Following an older post, this is the pom I use as a starting point for Scala project which uses maven.

<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>
 <groupId>org.test</groupId>
 <artifactId>test</artifactId>
 <packaging>jar</packaging>
 
 <version>0.1-SNAPSHOT</version>

 <properties>
  <!-- UTF-8 for everyone -->
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

  <!-- Other general properties -->
  <slf4j-version>1.6.0</slf4j-version>
  <logback-version>0.9.20</logback-version>
  <scala-version>2.8.0.RC2</scala-version>
  <scala-maven-plugin-version>2.13.1</scala-maven-plugin-version>
  </properties>

 <description>
  Starting pom
 </description>

 <repositories>
  <repository>
   <id>scala-tools.org</id>
   <name>Scala-tools Maven2 Repository</name>
   <url>http://scala-tools.org/repo-releases</url>
  </repository>
  <repository>
   <id>scala-snapshots.org</id>
   <name>Scala-tools Maven2 Repository snapshots</name>
   <url>http://scala-tools.org/repo-snapshots</url>
  </repository>

  <repository>
   <id>no-commons-logging</id>
   <name>No-commons-logging Maven Repository</name>
   <layout>default</layout>
   <url>http://no-commons-logging.zapto.org/mvn2</url>
   <snapshots><enabled>false</enabled></snapshots>
  </repository>

 </repositories>

 <pluginRepositories>
  <pluginRepository>
   <id>scala-tools.org</id>
   <name>Scala-tools Maven2 Repository</name>
   <url>http://scala-tools.org/repo-releases</url>
   <snapshots><enabled>false</enabled></snapshots>
  </pluginRepository>
  <pluginRepository>
   <id>scala-snapshots.org</id>
   <name>Scala-tools Maven2 Repository snapshots</name>
   <url>http://scala-tools.org/repo-snapshots</url>
  </pluginRepository>
 </pluginRepositories>

 <build>
  <sourceDirectory>src/main/scala</sourceDirectory>
  <testSourceDirectory>src/test/scala</testSourceDirectory>
  <plugins>
   <plugin>
    <groupId>org.scala-tools</groupId>
    <artifactId>maven-scala-plugin</artifactId>
    <version>${scala-maven-plugin-version}</version> 
    <executions>
     <execution>
      <goals>
       <goal>compile</goal>
       <goal>testCompile</goal>
      </goals>
     </execution>
    </executions>
    <configuration>
     <args>
      <arg>-target:jvm-1.5</arg>
      <arg>-make:transitivenocp</arg>
      <arg>-dependencyfile</arg>
      <arg>${project.build.directory}/.scala_dependencies</arg>
     </args>
     <jvmArgs>
      <jvmArg>-client</jvmArg>
      <jvmArg>-Xmx1G</jvmArg>
     </jvmArgs>
    </configuration>
   </plugin>
   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>2.1</version>
    <configuration>
    <source>1.6</source>
    </configuration>
   </plugin>
   
  </plugins>
 </build>

 <dependencies>
  <dependency>
   <groupId>org.scala-lang</groupId>
   <artifactId>scala-library</artifactId>
   <version>${scala-version}</version>
  </dependency>
  <dependency>
   <groupId>joda-time</groupId>
   <artifactId>joda-time</artifactId>
   <version>1.6</version>
  </dependency>
  <!--  test -->
  <dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.7</version>
   <scope>test</scope>
  </dependency>

  
  <!--
   All the following is related to our will to NOT use Commong-logging
  -->
  <!-- use no-commons-logging -->
  <dependency>
   <groupId>commons-logging</groupId>
   <artifactId>commons-logging</artifactId>
   <version>99.0-does-not-exist</version>
  </dependency>
  <!-- no-commons-logging-api, if you need it -->
  <dependency>
   <groupId>commons-logging</groupId>
   <artifactId>commons-logging-api</artifactId>
   <version>99.0-does-not-exist</version>
  </dependency>
  <!-- the slf4j commons-logging replacement -->
  <dependency>
   <groupId>org.slf4j</groupId>
   <artifactId>jcl-over-slf4j</artifactId>
   <version>${slf4j-version}</version>
  </dependency>
  <!-- the other slf4j jars -->
  <dependency>
   <groupId>org.slf4j</groupId>
   <artifactId>slf4j-api</artifactId>
   <version>${slf4j-version}</version>
  </dependency>
  <!-- using slf4j native backend -->
  <dependency>
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-core</artifactId>
   <version>${logback-version}</version>
  </dependency>
  <dependency>
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-classic</artifactId>
   <version>${logback-version}</version>
  </dependency>
 </dependencies>
</project>