公开(公告)号：US20090125913A1

公开(公告)日：2009-05-14

申请号：US12354859

申请日：2009-01-16

申请人： Jeffrey Powers Bradford ,  Harold F. Kossman ,  Timothy John Mullins

发明人： Jeffrey Powers Bradford ,  Harold F. Kossman ,  Timothy John Mullins

IPC分类号： G06F9/46 ,  G06F12/08

CPC分类号： G06F9/463 ,  G06F12/0862 ,  G06F2212/6028

摘要： An apparatus initiates, in connection with a context switch operation, a prefetch of data likely to be used by a thread prior to resuming execution of that thread. As a result, once it is known that a context switch will be performed to a particular thread, data may be prefetched on behalf of that thread so that when execution of the thread is resumed, more of the working state for the thread is likely to be cached, or at least in the process of being retrieved into cache memory, thus reducing cache-related performance penalties associated with context switching.

摘要翻译： 与上下文切换操作相关联的装置在恢复该线程的执行之前启动可能被线程使用的数据的预取。 因此，一旦知道将对特定线程执行上下文切换，则可以代表该线程预取数据，使得当线程的执行被恢复时，线程的更多的工作状态可能 被缓存，或至少在被检索到高速缓冲存储器的过程中，从而减少与上下文切换相关联的与缓存相关的性能惩罚。