International Business Machines Corporation

Michel Hack

Li Feng Zhang

Timothy John Slegel

Dan F Greiner

Yandong Wang

Yufei Ren

Xiaoqiao Meng

Jian Tan

Peter Anthony Franaszek

Charles Otto Schulz

Eberhard Engler

Joachim Von Buttlar

T Basil Smith, Iii

R Brett Tremaine

Various embodiments manage dynamic memory allocation data. In one embodiment, a set of memory allocation metadata is extracted from a memory heap space. Process dependent information and process independent information is identified from the set of memory allocation metadata based on the set of memory allocation metadata being extracted. The process dependent information and the process independent information at least identify a set of virtual memory addresses available in the memory heap space and a set of virtual memory addresses allocated to a process associated with the memory heap space. A set of allocation data associated with the memory heap space is stored in a persistent storage based on the process dependent information and the process independent information having been identified. The set of allocation data includes the process independent allocation information and a starting address associated with the memory heap space.

Restorable memory allocator

A cache management system performs cache management in a Remote Direct Memory Access (RDMA) key value data store. The cache management system receives a request from at least one client configured to access a data item stored in a data location of a remote server, and determines a popularity of the data item based on a frequency at which the data location is accessed by the at least one client. The system is further configured to determine a lease period of the data item based on the frequency and assigning the lease period to the data location.

Cache management in RDMA distributed key/value stores based on atomic operations

A caching management method includes embedding a notification request tag in a dummy file, uploading the dummy file to a cache server, recording a timestamp indicating a first point in time that the dummy file is uploaded to the cache server, receiving an eviction notification indicating a second point in time that the dummy file is evicted from the cache server, and calculating an eviction time indicating an amount of time taken for the dummy file to be evicted from the cache server. Transmission of the eviction notification is triggered in response to processing the notification request tag, and the dummy file is not retrieved from the cache server between the first point in time and the second point in time. The eviction time is equal to a difference between the first point in time and the second point in time.

Content management in caching services

In a computer system, a system and methodology for dynamically allocating available physical memory to addressable memory space on an as needed basis, and to recover unused physical memory space when it is no longer needed. Physical memory is assigned to addressable memory space when that memory space is first written. When the system software determines it has no further need of a memory space, the physical memory is recovered and made available for reuse.

Dynamic allocation of physical memory space

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Cortlandt Manor, NY, United States of America

Michel Hack