Data Write Control Apparatus and Method

A data write control method applied in a data write control apparatus, wherein the data write control apparatus comprises a first memory, a second memory, and a processor, wherein the first memory comprises a volatile storage unit, wherein the second memory is a nonvolatile storage unit, wherein a data write mode of the data write control apparatus comprises a write-back mode and a write-through mode, wherein the processor writes received data to the first memory in write-back mode, wherein the processor writes received data to the first memory and the second memory in write-through mode, and wherein the method comprises:

• detecting, by the processor, a quantity of dirty blocks in the first memory when the data write control apparatus is in write-back mode;
• separately predicting execution progress of a program run by the processor within a danger time period in the write-back mode and the write-through mode when the quantity of dirty blocks reaches a first preset threshold;
• switching a current data write mode to the write-through mode when it is predicted that the execution progress of the program run by the processor within the danger time period in write-through mode is faster than the execution progress of the program run by the processor within the danger time period in write-back mode;
• detecting the quantity of dirty blocks when the data write control apparatus is in write-through mode;
• and
• switching the current data write mode to the write-back mode when the quantity of dirty blocks decreases to a second preset threshold.