fmf: Use different heuristic for number of process with many CPUs

Downstream we sometimes end up with machines with lots of CPUs which
leads to running out of memory when trying to run the tests in VMs.
So let's switch to a different heuristic when we have lots of CPUs to
avoid running out of memory.

diff --git a/test/fmf/integration-tests/test.sh b/test/fmf/integration-tests/test.sh
index 4545090c3c1ab1edad4d3ba85ab7b73f206698f6..effe4b2d6f5ccdf15e3e56c4bd88de126d244261 100755 (executable)
--- a/test/fmf/integration-tests/test.sh
+++ b/test/fmf/integration-tests/test.sh
@@ -100,6 +100,13 @@ if [[ ! -e /dev/kvm ]]; then
     export TEST_NO_QEMU=1
 fi
 
+NPROC=$(nproc)
+if [[ $NPROC -ge 10 ]]; then
+    NPROC=$((NPROC / 2))
+else
+    NPROC=$((NPROC - 1))
+fi
+
 # Create missing mountpoint for mkosi sandbox.
 mkdir -p /etc/pacman.d/gnupg
 
@@ -115,6 +122,6 @@ mkosi -f sandbox \
     --suite integration-tests \
     --print-errorlogs \
     --no-stdsplit \
-    --num-processes "$(($(nproc) - 1))"
+    --num-processes "$NPROC"
 
 popd