~ruther/guix-local: gnu: cmake-build: Prevent stalls initiating tests.

dffaaf19c2c767598251f32c2f54512340ca5525 — Greg Hogan 6 months ago e62a6b6

gnu: cmake-build: Prevent stalls initiating tests.

* guix/build/cmake-build-system.scm (check): Set minimum bound for
test-load so that system tasks do not prevent low-core machines from
starting execution of the test suite.

Change-Id: I8751bb5b42c2a66f160117729fcb5648a635341c

patch browse .tar.gz

1 files changed, 5 insertions(+), 1 deletions(-)

M guix/build/cmake-build-system.scm

M guix/build/cmake-build-system.scm => guix/build/cmake-build-system.scm +5 -1

@@ 127,8 127,12 @@
                        `("--exclude-regex" ,test-exclude))
                  ,@(if parallel-tests?
                        `("-j" ,(number->string (parallel-job-count))
+                         ;; ctest waits to start tests when the CPU load is
+                         ;; above this threshold. Set a lower bound for low-core
+                         ;; machines to prevent stalling as may occur due to
+                         ;; system tasks even when no builds are running.
                          "--test-load"
-                         ,(number->string (total-processor-count)))
+                         ,(number->string (max 4 (total-processor-count))))
                        ;; When unset CMake defers to the build system.
                        '("-j" "1"))
                  ,@(if test-repeat-until-pass?