Method and an apparatus for the high-precision tracking of...

Details Method and an apparatus for the high-precision tracking of... Method and an apparatus for the high-precision tracking of...

2005-06-24

2008-09-09

Kim, Matt (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Memory configuring

C711S153000, C711S159000, C707S793000, C718S107000, C718S108000

Reexamination Certificate

active

07424589

ABSTRACT:
One embodiment of the present invention provides a method and a system for tracking memory usage of tasks in a shared heap. The system performs a full garbage-collection operation on the shared heap, during which a base memory usage is determined for each task. The system then periodically samples task state during execution to generate an estimate of newly allocated memory for each task. The base memory usage and the estimate of newly allocated memory for each task are combined to produce an estimate of current memory usage for each task. This estimate of current memory usage is used to determine whether a task is likely to be violating a memory quota. If so, the system triggers a remedial action, which can include: a full garbage-collection operation; a generational garbage-collection operation; or generation of a signal which indicates that a memory quota violation has occurred.

REFERENCES:
patent: 6199075 (2001-03-01), Ungar et al.
patent: 6560773 (2003-05-01), Alexander et al.
patent: 7171527 (2007-01-01), Pliss et al.
patent: 2001/0023478 (2001-09-01), Ozawa et al.
patent: 2003/0220952 (2003-11-01), Borman et al.
patent: 2005/0262324 (2005-11-01), Mathiske

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