BALANCE_ALPHA_INV_2POW 3473 libbase/jemalloc.c 		    * (uint64_t)((1U << BALANCE_ALPHA_INV_2POW)-1))
BALANCE_ALPHA_INV_2POW 3474 libbase/jemalloc.c 		    + (uint64_t)contention) >> BALANCE_ALPHA_INV_2POW;