Hey Jim, Running the third test with tunable chooseleaf_descend_once 0 with no devices marked out yields the following result (999.82733333333397, 0.48667056652539997) so chi squared value is 999 with a corresponding p value of 0.487 so that the placement distribution seems to be drawn from the uniform distribution as desired. Caleb -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html