Maintaining a timestamp-indexed record of memory access operations
AssigneeOracle International Corporation
InventorWilliam H.B. Habeck
Life of this patent
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Abstract
A memory management system determines a timestamp for a memory access operation that accesses a block of data, and uses the timestamp to access a timestamp-indexed record. The timestamp-indexed record includes a plurality of record arrays, each of which corresponds to a different time range, and includes one or more record entries of a different array-specific time duration. The system selects a record entry that indicates a time range associated with the timestamp, and that indicates an amount of memory accessed during the indicated time range. The system then updates the selected record entry to account for the memory size of the block of data.
Claims24
A computer-implemented method comprising:
- detecting, at a computing device, a memory access operation for a block of data;
- determining a timestamp for the memory access operation;
- selecting from a timestamp-indexed record a record entry indexed by the timestamp, wherein the selected record entry indicates a time range associated with the timestamp and further indicates an amount of memory accessed during the indicated time range, and wherein the timestamp-indexed record includes a plurality of record arrays, each of which corresponds to a different time range, and includes one or more record entries of a different array-specific time duration;
- and
- updating the selected record entry to account for the memory size of the block of data.
A non-transitory computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method comprising:
- detecting a memory access operation for a block of data;
- determining a timestamp for the memory access operation;
- selecting from a timestamp-indexed record a record entry indexed by the timestamp, wherein the selected record entry indicates a time range associated with the timestamp and further indicates an amount of memory accessed during the indicated time range, and wherein the timestamp-indexed record includes a plurality of record arrays, each of which corresponds to a different time range, and includes one or more record entries of a different array-specific time duration;
- and
- updating the selected record entry to account for the memory size of the block of data.
An apparatus comprising:
- a monitoring mechanism to determine a timestamp for a memory access operation that accesses a block of data;
- a selecting mechanism to select from a timestamp-indexed record a record entry indexed by the timestamp, wherein the selected record entry indicates a time range associated with the timestamp and further indicates an amount of memory accessed during the indicated time range, and wherein the timestamp-indexed record includes a plurality of record arrays, each of which corresponds to a different time range, and includes one or more record entries of a different array-specific time duration;
- and
- an updating mechanism to update the selected record entry to account for the memory size of the block of data.
Dependencies are inferred from the claim text.