一个cache控制器想要发起一个一致性访问请求,则它把该请求通过点到点的方式直接发送到该资源的归属节点(Home Node), Home node的directory根据其目前的状态来采取动作(前面介绍的MSI,MESI, MOESI等一致性协议中定义的状态变化和使用原则继续适用,只是底层消息传递的方式变化了)。 2 directory entry存储方式 为了实现ca...
对这个cache line读取的时候可以通过home node 的目录直接定位到这个cache,将它的cache line变成shared状态,将目录的脏位变成0,presence bit加上request node的编号,同时还要将新的cache line写回home node的ram中 对这个cache line修改的时候,可以将home node的目录中持有它的cache line invalidate,presence bit改成请...
Previous: Database Cache Next: Import Cache Entry Cache The entry cache holds recently accessed entries that are formatted for delivery to client applications. The entry cache is allocated as required until it reaches a size larger than, but based on the maximum entry cache size you specify. As...
but not from the actual data access function (status). My point is that the standard allows implementations to make either one, or both, or neither, failing. (And in fact, on most POSIX implementations, they don't cache anything in directory_entry so the constructor is non-failing for ...
If another user creates a new data item in the cache after you have issued a READ_DIRINFO request with criteria that matches the data item but before the request completes, the request might not include the directory entry for the new data item. If you want to ensure that when your ...
The directory cache (120) has a plurality of directory cache entries (Fig 4 400, 402, 404, 406, 408, 410) configured to store information regarding copies of memory lines stored in a plurality of memory caches (110, 112, 114, 116), wherein each directory cache entry has one or more ...
wxASSERT(m_pControlSocket->GetCurrentServer());CDirectoryCachecache;boolis_outdated =false;if(!cache.Lookup(listing, *m_pControlSocket->GetCurrentServer(), path,true, is_outdated))returnFZ_REPLY_ERROR;returnFZ_REPLY_OK; } 开发者ID:bugiii,项目名称:filezilla3ex,代码行数:14,代码来源:FileZilla...
在本地计算机上缓存搜索结果。 将CacheResults属性设置为 以true在本地计算机上存储目录信息。 仅当调用 方法时DirectoryEntry.CommitChanges,才会对此本地缓存进行更新并提交到 Active Directory 域服务。 使用ServerTimeLimit属性指定搜索的时间长度。 仅检索属性名称。 将PropertyNamesOnly属性设置为 以true仅检索已向其分...
如果后缀的条目缓存足够大(可以容纳该后缀中的大多数条目),并且已经填充了缓存,则命中率 (entrycachehitratio ) 应该很高。 如果已经填充了缓存,您将会看到,当先前为空的条目缓存被填满时,条目缓存大小 (currententrycachesize) 将接近于最大条目缓存大小 (maxentrycachesize)。理想情况下,条目的数量 (currententry...
cache, the directory files are searched for the information, but the cache is not updated. If the application modifies a directory entry, the next connect within that application will cause the cache for this application to be refreshed. The application directory cache for other applications will ...