Fast boot
摘要
說明書
At 804, the hyper-kernel determines whether the needed memory should be moved (e.g., to the node on which the blocked hyperthread is located), or whether the requesting process should be remapped (i.e., the virtual processor should be transferred to a different node). The decision can be based on a variety of factors, such as where the needed memory is located, the temperature of the cache, the workload on the node holding the hyperthread, and the workload on the node holding the needed memory (e.g., overworked or underworked). In some embodiments, the workload of a node is determined based at least in part on the average queue length in the TidalTree.
If the hyper-kernel determines that the memory should be moved, the hyper-kernel uses its current resource map to determine which node is likely to hold the needed memory and sends a message to that node, requesting the resource. The hyper-kernel also creates a continuation and places it in its event table. The hyperthread that was blocked at 802 is thus freed to take on other work, and can be assigned to another virtual processor using the assignProcessor routine.
