[libvirt] [libvirt-test-api][PATCH 2/3] improve the way we get the standard deviation

Signed-off-by: Luyao Huang <lhuang(a)redhat.com&gt; --- utils/utils.py | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/utils/utils.py b/utils/utils.py index 954b2bf..a6e6965 100644 --- a/utils/utils.py +++ b/utils/utils.py @@ -906,9 +906,10 @@ def get_standard_deviation(cb1, cb2, opaque1, opaque2, number = 1000): """ D = 0 for i in range(number): - a = cb1(opaque1) + a1 = cb1(opaque1) b = cb2(opaque2) - D += (int(a) - int(b))**2 + a2 = cb1(opaque1) + D += ((int(a1) + int(a2))/2 - int(b))**2 return math.sqrt(D/number) def param_to_tuple_nolength(paramlist): -- 1.8.3.1