Method and apparatus for constructing memory access model

A method for constructing a memory access model, the method comprising:

• obtaining a page table corresponding to a target process, and clearing a present (Present) bit comprised in each page table entry stored in the page table, wherein the page table is used to store a page table entry of a page to be accessed by the target process;
• monitoring the target process in real time and starting timing;
• if the target process generates a missing page interrupt event when accessing a page to be accessed, increasing the number of access times of the page to be accessed, wherein the missing page interrupt event is generated by the target process when the target process determines that a Present bit comprised in a page table entry of the page to be accessed is cleared, and the page table entry of the page to be accessed is obtained by the target process from the page table corresponding to the target process;
• and
• constructing a memory access model of the target process according to the number of access times that each page is accessed by the target process and time obtained through timing, wherein the memory access model at least comprises the number of access times and an access frequency that each page is accessed by the target process.

An apparatus for constructing a memory access model, the apparatus comprising:

• a first obtaining module, configured to obtain a page table corresponding to a process referencing a memory block, and clear a present bit comprised in each page table entry stored in the page table, wherein the page table is used to store a page table entry of a page to be accessed by the process referencing the memory block;
• a first monitoring module, configured to monitor the process referencing the memory block in real time and start timing;
• a first increasing module, configured to:
• if the process referencing the memory block generates a missing page interrupt event when accessing a page in the memory block, increase the number of access times of the page to be accessed, wherein the missing page interrupt event is generated when the process referencing the memory block determines that a Present bit comprised in a page table entry of the page to be accessed is cleared, and the page table entry of the page to be accessed is obtained by the process referencing the memory block from the page table corresponding to the process;
• and
• a second obtaining module, configured to construct a memory access model of the memory block according to the number of access times of each page in the memory block and time obtained through timing, wherein the memory access model at least comprises the number of access times and an access frequency of each page in the memory block.

An apparatus for constructing a memory access model, the apparatus comprising:

• a fifth obtaining module, configured to obtain a page table corresponding to a target process, and clear a present (Present) bit comprised in each page table entry stored in the page table, wherein the page table is used to store a page table entry of a page to be accessed by the target process;
• a second monitoring module, configured to monitor the target process in real time and start timing;
• a second increasing module, configured to:
• if the target process generates a missing page interrupt event when accessing a page to be accessed, increase the number of access times of the page to be accessed, wherein the missing page interrupt event is generated by the target process when the target process determines that a Present bit comprised in a page table entry of the page to be accessed is cleared, and the page table entry of the page to be accessed is obtained by the target process from the page table corresponding to the target process;
• and
• a sixth obtaining module, configured to construct a memory access model of the target process according to the number of access times that each page is accessed by the target process and time obtained through timing, wherein the memory access model at least comprises the number of access times and an access frequency that each page is accessed by the target process.