Commit 822e4250 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

torture: Scale scftorture memory based on number of CPUs 



As the number of CPUs increases, the number of outstanding no-wait
smp_call_function() handlers also increases, so that the default of
2G of memory is not always sufficient on 80-CPU systems.  This commit
therefore scales the amount of memory specified to qemu based on the
number of CPUs specified to the scftorture test instance.

Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 06c2afb8

tools/testing/selftests/rcutorture/bin/torture.sh

+3 −1
Original line number Diff line number Diff line
@@ -376,8 +376,10 @@ fi 


if test "$do_scftorture" = "yes"

then

	# Scale memory based on the number of CPUs.

	scfmem=$((2+HALF_ALLOTED_CPUS/16))

	torture_bootargs="scftorture.nthreads=$HALF_ALLOTED_CPUS torture.disable_onoff_at_boot csdlock_debug=1"

	torture_set "scftorture" tools/testing/selftests/rcutorture/bin/kvm.sh --torture scf --allcpus --duration "$duration_scftorture" --configs "$configs_scftorture" --kconfig "CONFIG_NR_CPUS=$HALF_ALLOTED_CPUS" --memory 2G --trust-make

	torture_set "scftorture" tools/testing/selftests/rcutorture/bin/kvm.sh --torture scf --allcpus --duration "$duration_scftorture" --configs "$configs_scftorture" --kconfig "CONFIG_NR_CPUS=$HALF_ALLOTED_CPUS" --memory ${scfmem}G --trust-make

fi



if test "$do_rt" = "yes"