Patent ID: 8713275

Claim:
A memory access monitoring method, comprising: performing coarse grain monitoring on access circumstances of nodes for local memory pages, wherein the coarse grain monitoring further comprises if a first remote access rate exceeds a first predetermined threshold value then determining that a coarse grain page obtained by coarse grain dividing the local memory pages is a hot page, wherein the coarse grain page which is under the coarse grain monitoring is accessed by a first remote node by the first remote access rate; migrating content of the hot page to a first remote memory corresponding to the first remote node; if the first remote access rate by which the coarse grain page is accessed by the first remote node does not exceed the first redetermined threshold value, then determining whether a total remote access rate exceeds a second predetermined threshold value, wherein the coarse grain page is accessed by all remote nodes by the total remote access rate; if the total remote access rate exceeds the second predetermined threshold value, then the coarse grain page is a half hot page; and performing fine grain monitoring on the half hot page, wherein the fine grain monitoring comprises monitoring a fine grain area of the half hot page and the coarse grain page is larger than a memory space occupied by the fine grain area.