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[PATCH] travis.yml: Limit simultaneous jobs to 3

From: Thomas Huth
Subject: [PATCH] travis.yml: Limit simultaneous jobs to 3
Date: Wed, 17 Feb 2021 11:25:31 +0100

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:


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>
 See also this URL for the explanation of the 32 vs 2 CPUs on aarch64:

 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index fc27fd6330..cc39a447e8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -88,7 +88,7 @@ git:
 # Common first phase for all steps
   - if command -v ccache ; then ccache --zero-stats ; fi
-  - export JOBS=$(($(getconf _NPROCESSORS_ONLN) + 1))
+  - export JOBS=3
   - echo "=== Using ${JOBS} simultaneous jobs ==="
 # Configure step - may be overridden

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