[Qemu-devel] [PATCH v2 12/21] travis: build using all available cores

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

Few improvement as of today, but if Travis release their limit on the opensource
plan or upgrade their hardware, new builds will get some benefit.

Restrict to as most 4 cores to respect Travis Open Source plan.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 .travis.yml | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 777914f759..a7512f3ab0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -62,7 +62,14 @@ notifications:
     on_failure: always
 env:
   global:
-    - TEST_CMD="make check"
+    # jobs
+      # detects cores on the hosting hardware, rather than the VM (https://docs.travis-ci.com/user/languages/c#hints)
+    - VM_CORES="4" HW_CORES="$(getconf _NPROCESSORS_ONLN)"
+      # be kind with Travis free plan, restrict to at most 4 cores
+    - PARALLEL_JOBS="$(($(test ${HW_CORES} -gt ${VM_CORES} && echo ${VM_CORES} || echo ${HW_CORES}) + 1))"
+    - HOMEBREW_MAKE_JOBS="${PARALLEL_JOBS}"
+    # tests
+    - TEST_CMD="make -j${PARALLEL_JOBS} check"
   matrix:
     - CONFIG=""
     - CONFIG="--enable-debug --enable-debug-tcg --enable-trace-backends=log"
@@ -78,9 +85,11 @@ before_install:
   - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew install libffi gettext glib pixman ; fi
   - git submodule update --init --recursive
 before_script:
+  - echo "Using ${PARALLEL_JOBS} parallel jobs"
   - ./configure ${CONFIG}
 script:
-  - make -j3 && ${TEST_CMD}
+  - make -j${PARALLEL_JOBS}
+  - ${TEST_CMD}
 matrix:
   include:
     # Test with CLang for compile portability
@@ -234,7 +243,7 @@ matrix:
       group: edge
       env:
         - COVERITY=1
-        - COVERITY_BUILD_CMD="make -j3"
+        - COVERITY_BUILD_CMD="make -j${PARALLEL_JOBS}"
         - COVERITY_EMAIL=peter.maydell@linaro.org
         # This 'secure' setting sets COVERITY_TOKEN=<secret token>
         # and was created with travis encrypt -r qemu/qemu COVERITY_TOKEN=...
-- 
2.11.0