公开(公告)号：US20230080935A1

公开(公告)日：2023-03-16

申请号：US18056445

申请日：2022-11-17

Applicant: VMware, Inc.

Inventor： Tanay GANGULY ,  Zubraj SINGHA ,  Goresh MUSALAY ,  Kashish BHATIA

IPC: G06F12/02 ,  G06F12/10

Abstract: Virtual memory space may be saved in a clone environment by leveraging the similarity of the data signatures in swap files when a chain of virtual machines (VMs) includes clones spawned from a common parent and executing common applications. Deduplication is performed across the chain, rather than merely within each VM. Examples include generating a common deduplication identifier (ID) for the chain; generating a logical addressing table linked to the deduplication ID, for each of the VMs in the chain; and generating a hash table for the chain. Examples further include, based at least on a swap out request, generating a hash value for a block of memory to be written to a storage medium; and based at least on finding the hash value within the hash table, updating the logical addressing table to indicate a location of a prior-existing duplicate of the block on the storage medium.