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travis.yml: Limit simultaneous jobs to 3

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Even though the host machines that run the Travis CI jobs have
quite a lot of CPUs (e.g. nproc in an aarch64 job reports 32), the
containers on Travis are still limited to 2 vCPUs according to:

 https://docs.travis-ci.com/user/reference/overview/#approx-boot-time

So we do not gain much when compiling with a job number based on
the output of "getconf _NPROCESSORS_ONLN" - quite the contrary, the
aarch64 containers are currently aborting quite often since they
are running out of memory. Thus let's rather use a fixed number
like 3 in the jobs here, so that e.g. two threads can actively run
while a third one might be waiting for I/O operations to complete.
This should hopefully fix the out-of-memory failures in the aarch64
CI jobs.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210217102531.1441557-1-thuth@redhat.com>
[AJB: add comment]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210217121932.19986-6-alex.bennee@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Thomas Huth 2021-02-17 12:19:31 +00:00
parent 53c915c627
commit fc4241827f
1 changed files with 3 additions and 1 deletions
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4
.travis.yml
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@ -86,9 +86,11 @@ git:
submodules: false submodules: false
# Common first phase for all steps # Common first phase for all steps
# We no longer use nproc to calculate jobs:
# https://travis-ci.community/t/nproc-reports-32-cores-on-arm64/5851
before_install: before_install:
- if command -v ccache ; then ccache --zero-stats ; fi - if command -v ccache ; then ccache --zero-stats ; fi
- export JOBS=$(($(getconf _NPROCESSORS_ONLN) + 1)) - export JOBS=3
- echo "=== Using ${JOBS} simultaneous jobs ===" - echo "=== Using ${JOBS} simultaneous jobs ==="
# Configure step - may be overridden # Configure step - may be overridden