Cluster-wide memory management using similarity-preserving signatures
First Claim
Patent Images
1. A method, comprising:
- in a computing system that includes a plurality of compute nodes that run clients, defining memory chunks, each memory chunk comprising multiple memory pages accessed by a respective client;
computing respective similarity-preserving signatures for two or more of the memory chunks;
identifying, based on the similarity-preserving signatures, memory chunks that differ in content in no more than a predefined number of memory pages with at least a predefined likelihood, and noting first and second clients on different computing nodes, accessing the identified memory chunks; and
migrating the first client to the compute node hosting the second client or to a compute node topologically adjacent in the computing system to the compute node hosting the second client, responsively to identifying the memory chunks that differ in content in no more than a predefined number of memory pages with at least a predefined likelihood.
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Abstract
A method includes, in a computing system that includes one or more compute nodes that run clients, defining memory chunks, each memory chunk including multiple memory pages accessed by a respective client. Respective similarity-preserving signatures are computed for one or more of the memory chunks. Based on the similarity-preserving signatures, an identification is made that first and second memory chunks differ in content in no more than a predefined number of memory pages with at least a predefined likelihood. Efficiency of access to the identified first and second memory chunks is improved.
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Citations
15 Claims
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1. A method, comprising:
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in a computing system that includes a plurality of compute nodes that run clients, defining memory chunks, each memory chunk comprising multiple memory pages accessed by a respective client; computing respective similarity-preserving signatures for two or more of the memory chunks; identifying, based on the similarity-preserving signatures, memory chunks that differ in content in no more than a predefined number of memory pages with at least a predefined likelihood, and noting first and second clients on different computing nodes, accessing the identified memory chunks; and migrating the first client to the compute node hosting the second client or to a compute node topologically adjacent in the computing system to the compute node hosting the second client, responsively to identifying the memory chunks that differ in content in no more than a predefined number of memory pages with at least a predefined likelihood. - View Dependent Claims (2, 3, 4, 5, 6, 14, 15)
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- 7. A computing system, comprising a plurality of compute nodes that comprise respective memories and respective processors, wherein the processors are configured to run clients that access memory pages stored in the memories, to define memory chunks, each memory chunk comprising multiple memory pages accessed by a respective client, to compute respective similarity-preserving signatures for two or more of the memory chunks, to identify, based on the similarity-preserving signatures, memory chunks that differ in content in no more than a predefined number of memory pages with at least a predefined likelihood, and noting first and second clients on different computing nodes, accessing the identified memory chunks, and to migrate the first client to the compute node hosting the second client or to a compute node topologically adjacent in the computing system to the compute node hosting the second client, responsively to identifying the memory chunks that differ in content in no more than a predefined number of memory pages with at least a predefined likelihood.
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13. A computer software product, the product comprising a tangible non-transitory computer-readable medium in which program instructions are stored, which instructions, when read by a plurality of processors of respective compute nodes, cause the processors to run clients that access memory pages stored in memories of the compute nodes, to define memory chunks, each memory chunk comprising multiple memory pages accessed by a respective client, to compute respective similarity-preserving signatures for two or more of the memory chunks, to identify, based on the similarity-preserving signatures, memory chunks that differ in content in no more than a predefined number of memory pages with at least a predefined likelihood, and noting first and second clients on different computing nodes, accessing the identified memory chunks, and to migrate the first client to the compute node hosting the second client or to a compute node that are topologically adjacent in the computing system to the compute node hosting the second client, responsively to identifying the memory chunks that differ in content in no more than a predefined number of memory pages with at least a predefined likelihood.
Specification