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  1. Core Server
  2. SERVER-29356

Increase the amount of memory available for tests running on the Code Coverage builder

    • Fully Compatible
    • v3.4
    • TIG 2017-06-19
    • 0

      There have been many instances where the OOM killer has killed a mongod process when running on the Code Coverage builder. With the num_jobs_available expansion equal to the number of CPUs, we end up running 4 tests concurrently on the rhel62-small distro is a c3.xlarge (4 CPU, 7.5GiB memory). We should change to use the rhel62-large distro and set num_jobs_available to number of CPUs divided by 2 when running tests. The rhel62-large distro is a c3.4xlarge (16 CPU, 30GiB memory), so we'll end up running 8 tests concurrently, but have a larger ratio (2x) of available memory to number of concurrent tests.

      Note: The special handling for running tasks on the rhel62-large distro can be removed since all tasks for the build variant will run on that distro anyway.


            eddie.louie Eddie Louie
            max.hirschhorn@mongodb.com Max Hirschhorn
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