摘要
针对磁带库的数据访问特点,根据高能物理领域的实际需求,提出了分组协同缓存策略。这一策略以缓存模型为基础,结合本地缓存与协同缓存的优点,把缓冲区分成不同的组,不同组的缓冲区之间相互独立;同一组的缓冲区由网络上不同节点上的磁盘组成,这些磁盘之间相互协作。还对该缓存策略的目录管理、更新算法、一致性等问题进行了详细分析。实验说明,该策略能很好的满足高能物理领域的数据处理和海量存储需求。
This paper proposes the group-cooperative caching policy accordingto the characteristics of tapes and requirements of high energy physics domain. This policy integrates the advantages of traditional local caching and cooperative caching on basis of cache model. It divides cache into independent groups; the same group of cache is made of cooperating disks on network. This paper also analyzes the directory management, update algorithm and cache consistency of the policy. The experiment shows the policy can meet the requirements of data processing and mass storage in high energy physics domain very well.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2006年第4期438-442,共5页
Nuclear Electronics & Detection Technology
关键词
海量存储
磁带库
缓存管理
分组协同缓存
mass storage
tape library
group-cooperative caching
cache consistency
