// remove the least frequently operated element ifc.len== c.cap{ c.eliminate() c.len-- } // insert in freqMap and itemMap c.insertMap(obj) // change minFreq to 1 because insert the newest one c.minFreq =1 // length++ c.len++ } } 插入一个新的 func(c *LFU)insertMap(obj i...
http://en.wikipedia.org/wiki/Page_replacement_algorithm#Least_recently_used 之前在网上看到过网友的一个C++实现,感觉不错,所以核心代码就采用了他的设计。相关链接如下: http://www.cppblog.com/red22/articles/62499.html 原作者通过两个MAP对象来记录缓存数据和LRU队列,注意其中的LRU队列并不是按照常用的方...
Over the years many algorithms have been proposed for page replacement. Each algorithm attempts to minimize the page fault rate while incurring minimum overhead. , In this paper we discuses at the traditional algorithms such as LRU. Least Recently Used (LRU) page replacement algorithm is most ...
OPT 替换策略(Optimal Replacement Policy) 原来这个策略叫做 MIN,后来改叫做 OPT 了。这样的一种最优策略,是 Belady 大佬多年前开发的。最优替换策略能达到总体未命中数量最少。实现方式是 替换内存中在最远将来才会访问到的页,由此达到缓存未命中率最低 ! Replace the page that will be accessed furthest in ...
此外,clock算法还有一系列的变种,参考https://en.wikipedia.org/wiki/Page_replacement_algorithm#cite_note-9 工作集(Working Set) 工作集的意思是,进程在时间段(t - x, t)内使用的内存页集合,也有可能是(t,t+x)所访问的页集合,因此应该将它们尽可能保存在内存中。工作集的实现依赖于OS提供Page Aging的支持...
此外,clock算法还有一系列的变种,参考https://en.wikipedia.org/wiki/Page_replacement_algorithm#cite_note-9 工作集(Working Set) 工作集的意思是,进程在时间段(t - x, t)内使用的内存页集合,也有可能是(t,t+x)所访问的页集合,因此应该将它们尽可能保存在内存中。工作集的实现依赖于OS提供Page Aging的支持...
Operating System Memory Management、Page Fault Exception、Cache Replacement Strategy Learning、LRU Algorithm 目录 0. 引言1. 页表2. 结构化内存管理3. 物理内存的管理4. SLAB分配器5. 处理器高速缓存和TLB控制6. 内存管理的概念7. 内存覆盖与内存交换8. 内存连续分配管理方式9. 内存非连续分配管理方式10. ...
The research indictaes that LRU page-replacement algorithm is very close to the ideal one in memory management of operating system. Based on this, the principle of matrix method, which is used to realize the LRU algorithms, is introduced and discussed in detail. Keywords: page replacement; LRU...
[9] yooys,leeh,ryuy,etal.pagereplacementalgorithmsfornandflashmemorystorages[m].berlin,germanyspringer,2007. [10] parksy,jungd,kangju,etal.cflru:areplacementalgorithmforflashmemory[c]//proc.ofinternationalconferenceoncompilers,architectureandsynthesisforembeddedsystems.newyork,usa:acmpress,2006:234-24...
Using this library is simple. It is necessary to include header with the cache implementation (cache.hppfile) and appropriate header with the cache policy if it is needed. If not then the non-special algorithm will be used (it removes the last element which key is the last in the internal...