/ A" @; z6 l0 I2 t___cacheline_aligned 被define成为__attribute__((__aligned__(128)))# \, Z+ }: P% I 以前在Linux社区里他们讨论过说P4cpu的一级数据Cache是64字节长度(CPU每次向系统总线请求两个长度为64字节的L2 cache),所以似乎这里L1_CACHE_BYTES应该是64而不是128,有人解...
inlinevoidjemalloc_aligned_free(void* p) { je_free(p); } #endif inlinevoid*cacheline_aligned_alloc(size_tsize) { #ifdefROCKSDB_JEMALLOC returnjemalloc_aligned_alloc(size, CACHE_LINE_SIZE); #else return_aligned_malloc(size, CACHE_LINE_SIZE); ...
In this paper, we present a hardware solution to perform non cache-line aligned memory copies allowing the commonly used memcpy function to cope with word copies. The main purpose is to reduce the latency in executing memory copies aligned on word boundaries. The proposed solution exploits the ...
In an embodiment, a processor may be configured to fetch N instruction bytes from an instruction cache (a "fetch group"), even if the fetch group crosses a cache line boundary. A branch predictor may be configured to produce branch predictions for up to M branches in the fetch group, ...
In an embodiment, a processor may be configured to fetch N instruction bytes from an instruction cache (a "fetch group"), even if the fetch group crosses a cache line boundary. A branch predictor may be configured to produce branch predictions for up to M branches in the fetch group, ...