Mark, Assuming a pre-filled Maven local cache, I've a 16 second build that's only longer when I run a screen recorder in order to make the video show here - https://paulhammant.com/2017/02/05/a-16-second-java-webapp-build-including-webdriver-tests/
That one runs three WebDriver tests too after the unit and service tests - meaning (implicitly) it's testing JavaScript as well as Java in that time. In order to make it fast I've abandoned the fail-safe plugin and do all parts of the test-pyramid in surefire (see the pom). - Paul On Fri, Apr 13, 2018 at 3:20 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 > > -- Paul Hammant DevOps <https://devops.paulhammant.com> Let me give your enterprise a step by step plan to get out of the hell of crazy branching models (ClearCase maybe?) and into the world of high-throughput CD on DevOps foundations.
