Mark, Your project on mine machine takes on average 2.5 second and that is also doing a clean package each time, not just package.
Spec: MacBook Pro (Retina, 13-inch, Late 2013) Processor 2.8 GHz Intel Core i7 Memory 16 GB 1600 MHz DDR3 Disk 512GB SSD $ java -version java version "9.0.4" Java(TM) SE Runtime Environment (build 9.0.4+11) Java HotSpot(TM) 64-Bit Server VM (build 9.0.4+11, mixed mode) $ mvn -version Apache Maven 3.5.3 (3383c37e1f9e9b3bc3df5050c29c8aff9f295297; 2018-02-24T19:49:05Z) Maven home: /opt/local/share/java/maven3 Java version: 9.0.4, vendor: Oracle Corporation Java home: /Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home Default locale: en_GB, platform encoding: UTF-8 OS name: "mac os x", version: "10.13.4", arch: "x86_64", family: "mac" $ mvn -Dmaven.tests.skip=true -DskipTests=true clean package 2>&1 [INFO] Scanning for projects... [INFO] [INFO] -----------------< com.io7m.minimal:com.io7m.minimal >------------------ [INFO] Building com.io7m.minimal 0.0.1 [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ com.io7m.minimal --- [INFO] Deleting /Users/john/projects/tmp/maven-minimal-20180413/target [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ com.io7m.minimal --- [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] skip non existing resourceDirectory /Users/john/projects/tmp/maven-minimal-20180413/src/main/resources [INFO] [INFO] --- maven-compiler-plugin:3.7.0:compile (default-compile) @ com.io7m.minimal --- [INFO] Changes detected - recompiling the module! [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent! [INFO] Compiling 1 source file to /Users/john/projects/tmp/maven-minimal-20180413/target/classes [INFO] [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ com.io7m.minimal --- [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] skip non existing resourceDirectory /Users/john/projects/tmp/maven-minimal-20180413/src/test/resources [INFO] [INFO] --- maven-compiler-plugin:3.7.0:testCompile (default-testCompile) @ com.io7m.minimal --- [INFO] No sources to compile [INFO] [INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ com.io7m.minimal --- [INFO] Tests are skipped. [INFO] [INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ com.io7m.minimal --- [INFO] Building jar: /Users/john/projects/tmp/maven-minimal-20180413/target/com.io7m.minimal-0.0.1.jar [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.515 s [INFO] Finished at: 2018-04-14T11:13:18+01:00 [INFO] ------------------------------------------------------------------------ $ mvn -Dmaven.tests.skip=true -DskipTests=true clean package 2>&1 [INFO] Scanning for projects... [INFO] [INFO] -----------------< com.io7m.minimal:com.io7m.minimal >------------------ [INFO] Building com.io7m.minimal 0.0.1 [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ com.io7m.minimal --- [INFO] Deleting /Users/john/projects/tmp/maven-minimal-20180413/target [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ com.io7m.minimal --- [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] skip non existing resourceDirectory /Users/john/projects/tmp/maven-minimal-20180413/src/main/resources [INFO] [INFO] --- maven-compiler-plugin:3.7.0:compile (default-compile) @ com.io7m.minimal --- [INFO] Changes detected - recompiling the module! [WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent! [INFO] Compiling 1 source file to /Users/john/projects/tmp/maven-minimal-20180413/target/classes [INFO] [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ com.io7m.minimal --- [WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent! [INFO] skip non existing resourceDirectory /Users/john/projects/tmp/maven-minimal-20180413/src/test/resources [INFO] [INFO] --- maven-compiler-plugin:3.7.0:testCompile (default-testCompile) @ com.io7m.minimal --- [INFO] No sources to compile [INFO] [INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ com.io7m.minimal --- [INFO] Tests are skipped. [INFO] [INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ com.io7m.minimal --- [INFO] Building jar: /Users/john/projects/tmp/maven-minimal-20180413/target/com.io7m.minimal-0.0.1.jar [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.576 s [INFO] Finished at: 2018-04-14T11:13:23+01:00 [INFO] ------------------------------------------------------------------------ $ mvn -Dmaven.tests.skip=true -DskipTests=true clean package 2>&1 In my view maven can always be made faster, once all of maven and it's plugins are using java modules, what is loaded into memory will be reduced and it will naturally get faster. John On 14 April 2018 at 10:42, Tibor Digana <tibordig...@apache.org> wrote: > This is interesting discussion and so I decided to build your project with > Java 9 and Maven 3.5.3. > Completed within 1.5 sec. > I have noticed that Maven 3.3.9 was slower, cca 2.5 sec. > > mvn -V test > Apache Maven 3.5.3 (3383c37e1f9e9b3bc3df5050c29c8aff9f295297; > 2018-02-24T20:49:05+01:00) > Maven home: D:\apache-maven-3.5.3 > Java version: 9.0.1, vendor: Oracle Corporation > Java home: e:\Program Files\Java\jdk-9.0.1 > Default locale: en_US, platform encoding: Cp1250 > OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows" > [INFO] Scanning for projects... > [INFO] > [INFO] -----------------< com.io7m.minimal:com.io7m.minimal >>------------------ > [INFO] Building com.io7m.minimal 0.0.1 > [INFO] --------------------------------[ jar > ]--------------------------------- > [INFO] > [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ > com.io7m.minimal --- > [WARNING] Using platform encoding (Cp1250 actually) to copy filtered > resources, i.e. build is platform dependent! > [INFO] skip non existing resourceDirectory > d:\vcs\github\maven-minimal-20180413\src\main\resources > [INFO] > [INFO] --- maven-compiler-plugin:3.7.0:compile (default-compile) @ > com.io7m.minimal --- > [INFO] Nothing to compile - all classes are up to date > [INFO] > [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) > @ com.io7m.minimal --- > [WARNING] Using platform encoding (Cp1250 actually) to copy filtered > resources, i.e. build is platform dependent! > [INFO] skip non existing resourceDirectory > d:\vcs\github\maven-minimal-20180413\src\test\resources > [INFO] > [INFO] --- maven-compiler-plugin:3.7.0:testCompile (default-testCompile) @ > com.io7m.minimal --- > [INFO] No sources to compile > [INFO] > [INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ > com.io7m.minimal --- > [INFO] No tests to run. > [INFO] > ------------------------------------------------------------------------ > [INFO] BUILD SUCCESS > [INFO] > ------------------------------------------------------------------------ > [INFO] Total time: 1.450 s > [INFO] Finished at: 2018-04-14T11:36:37+02:00 > [INFO] > ------------------------------------------------------------------------ > > On Fri, Apr 13, 2018 at 9:20 PM, Mark Raynsford < > org.apache.maven.u...@io7m.com> wrote: > >> Hello. >> >> Is there any way I might speed up Maven? I've been using it for years >> and, for the first time, I'm actually executing it from an IDE rather >> than using the IDE's built-in compiler. It seems like there's a rather >> large and apparently fixed amount of overhead per invocation. Take the >> following "could not be simpler" project: >> >> https://github.com/io7m/maven-minimal-20180413 >> >> I piped the output through tai64n [1] to give a better indication of >> exactly how long everything is taking. That's a project that compiles a >> single Java file and produces a jar. It doesn't run any tests, it >> doesn't include any resources. 16 seconds total execution [2]! >> >> Now for an infrequent command-line build, that's not *too* obnoxious. >> For a "click a button in the IDE because I want to try this bit of code >> now" build, that's a world of suffering. >> >> It seems like Maven first spends ten entire seconds doing not very >> much. That cannot be attributed to JVM startup time (Hello World on my >> system takes about 100ms to reach user code, and even the largest Java >> application I still takes less than a second to reach user code after >> all the classes have loaded). >> >> Is there anything I can do to cut this down? If not, is this something >> that's intended to be addressed in the near future? >> >> [1] http://cr.yp.to/daemontools/tai64n.html >> [2] The Maven output claims 6 seconds, but that doesn't include the >> time it took for the build to start. >> >> -- >> Mark Raynsford | http://www.io7m.com >> >> --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org For additional commands, e-mail: dev-h...@maven.apache.org
