{"id":262,"date":"2010-06-21T09:30:11","date_gmt":"2010-06-21T09:30:11","guid":{"rendered":"http:\/\/www.scmgalaxy.com\/tutorials\/2010\/06\/21\/how-we-reduced-build-time-from-8-hours-to-1-hour\/"},"modified":"2017-12-29T13:27:18","modified_gmt":"2017-12-29T13:27:18","slug":"how-we-reduced-build-time-from-8-hours-to-1-hour","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/how-we-reduced-build-time-from-8-hours-to-1-hour\/","title":{"rendered":"How we reduced build time from 8 hours to 1 hour ? – Complete Guide"},"content":{"rendered":"

\"hudson-master-slave-setup\"<\/p>\n

Situation<\/strong><\/p>\n

    \n
  1. For one of our clients, Build is taking 8 hours and nightly build is failing frequently.<\/li>\n
  2. Test case execution is consuming more time than the compilation.<\/li>\n
  3. Low confidence levels for developers on nightly builds and subsequently during integration cycle.<\/li>\n<\/ol>\n

    Approach<\/strong><\/p>\n

      \n
    1. We reviewed the whole set of build scripts being used and test case suite to check how we can refatcor them.<\/li>\n
    2. Verified the build infrastructure i.e., build server capacity from hardware point of view.<\/li>\n
    3. Feasibility study done to check how a CI environment help in giving faster feedback on the quality.<\/li>\n<\/ol>\n


      \nSolution<\/strong><\/p>\n

        \n
      1. Refactoring done for build scripts to make modules compilation parallel (wherever possible).<\/li>\n
      2. Some test cases are selected (which don\u2019t require external services like database) to run as part of the build.<\/li>\n
      3. CI environment (using open source cruise control) is established to run builds per commit and execute only above set of test cases as part of the build.<\/li>\n
      4. Set up low-cost remote agent machine which will run remaining test suite once per day.<\/li>\n<\/ol>\n

        Results<\/strong><\/p>\n

          \n
        1. Build took only 1 hour and gave faster feedback to dev team.<\/li>\n
        2. CI environment provided good confidence to dev team.<\/li>\n
        3. Team is able to implement more best practices.<\/li>\n
        4. Effective use of existing build\u00a0 infrastructure (hardware) ensured no further cost is required.<\/li>\n
        5. This helped the client in ensuring smooth release management.<\/li>\n<\/ol>\n

           <\/p>\n","protected":false},"excerpt":{"rendered":"

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