On the other hand, modern processors handle up to 128 bits in a SIMD instruction. The latest models even have two SIMD units. Hence, a complete cache-line can be handled in only two steps. 可以就此改进 Shifting Bloom Filter，让其的 w_bar 增加到 128-7
访问时间必须再次与空间效率进行权衡
Golomb-Compressed Sequence (gcs)