Pivotal Software, Inc.

Mohammad Foyzur Rahman

Michail Petropoulos

George Constantin Caragea

Carlos Garcia-Alvarado

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for precisely tracking memory usage in a multi-process computing environment. One of the methods includes implementing an instance of a memory usage tracker (MUT) in each process running in a node of a computer system. A MUT can maintain an account of memory usage for each of multiple logical owners running on a process on which the MUT is running. The MUT can determine an actual memory quota for each owner, and enforce the actual memory quota of the owner. Enforcing the actual memory quota of the owner can include receiving each memory allocation request, checking each allocation request and a current state of the account against the actual quota, approving or rejecting each allocation request, communicating the approval or rejection to an underlying memory manager, and updating the owner account for each approved allocation request.

Precisely tracking memory usage in multi-process computing environment

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for tracking memory usage. One of the methods includes implementing an instance of a memory usage tracker (MUT) in each process running in a node of a computer system. The MUT initiates a free process for a memory chunk. A current generation of the memory chunk is determined. The MUT determines whether the mapping element's generation precedes the current generation. If the mapping element's generation is old, the MUT treats the long-living rollover account as the owner of the memory chunk to be freed and if the current generation and the mapping element's generation match, then the MUT considers the owner associated with the mapping element as the owner of the chunk. The MUT then adjusts the balance of the determined memory account and/or sub-account and the balance of the mapping element by the freed memory amount.

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San Mateo, CA, United States of America

Mohammad Foyzur Rahman