pagealignment
Page alignment refers to the practice of ensuring that data structures or memory buffers begin at specific memory addresses that are multiples of a certain size. This alignment is often dictated by the hardware architecture of a computer system, particularly the memory management unit and the processor's cache lines. Processors typically access memory in chunks, and when data is aligned to these chunk boundaries, memory access can be significantly faster. If data straddles these boundaries, the processor might need to perform multiple memory accesses to retrieve or store the complete data, leading to a performance penalty.
The most common page alignment size is 4KB, which corresponds to the typical size of a memory
Improper page alignment can lead to performance degradation, increased memory consumption due to padding, and in