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test: try to determine QEMU_SMP dynamically 

If the QEMU_SMP value has not been explicitly set, try to determine it
from the number of online CPUs using the nproc utility. If this approach
fails, fall back to the default value QEMU_SMP=1.

This change should significantly help when running integration tests
under QEMU on multicore systems.
This commit is contained in:
Frantisek Sumsal 2019-03-05 16:08:00 +01:00
parent 2f2a0454ef
commit 5bfb2a93a4
1 changed files with 10 additions and 1 deletions
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11
test/test-functions
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@ -134,7 +134,16 @@ run_qemu() {
fi
fi
[ "$QEMU_SMP" ] || QEMU_SMP=1
# If QEMU_SMP was not explicitly set, try to determine the value 'dynamically'
# i.e. use the number of online CPUs on the host machine. If the nproc utility
# is not installed or there's some other error when calling it, fall back
# to the original value (QEMU_SMP=1).
if ! [ "$QEMU_SMP" ]; then
if ! QEMU_SMP=$(nproc); then
dwarn "nproc utility is not installed, falling back to QEMU_SMP=1"
QEMU_SMP=1
fi
fi
find_qemu_bin || return 1