Application Migration in Process Virtual Machine via State Capture
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Solution Overview
Problem
Current application migration in process virtual machine environments is costly and disruptive, as existing applications must be stopped and restarted from scratch in new virtual machines, leading to inefficiencies and downtime.
Innovation Solution
The method involves pausing the execution of an application in the source process virtual machine, recording its state, and copying this state to a new destination process virtual machine, allowing seamless resumption of execution without reconfiguration, thereby minimizing downtime and resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an application is stopped and restarted from scratch in a new process virtual machine, then the new virtual machine can be created with fresh configuration, but migration time and resource wastage increase
Solution Approach 1:
The system performs preliminary actions by capturing the runtime state of the application before migration. The state information including memory contents, execution context, and configuration is recorded in advance and transferred to the new virtual machine, allowing the application to resume from this pre-captured state rather than restarting from scratch.
Solution Approach 2:
The patent applies copying by creating a replica of the application's runtime state in the new process virtual machine. The captured state information (memory, execution context, configuration) is copied from the source virtual machine to the destination virtual machine, enabling the application to continue execution without full restart.
2Adaptability or versatility
If an application is stopped and restarted from scratch, then configuration can be updated, but execution continuity is broken
Solution Approach 1:
The system captures the application state at a specific point in time before migration, preserving the execution context. This preliminary capture allows the application to maintain continuity while still enabling configuration updates in the new virtual machine environment.
Solution Approach 2:
The patent implements dynamic state capture and transfer mechanisms that allow the application to transition smoothly between virtual machines. The state information is dynamically captured, transferred, and applied to the new virtual machine, maintaining execution continuity while enabling flexible configuration management.
3Adaptability or versatility
If full application restart is performed, then new configuration settings can be applied, but system resources are wasted
Solution Approach 1:
Instead of copying the entire application and its state from scratch, the system captures only the essential runtime state information (memory contents, execution context, configuration) and transfers this reduced representation to the new virtual machine. This selective copying significantly reduces resource consumption while maintaining configuration flexibility.
Solution Approach 2:
The patent extracts only the necessary state information from the running application and separates it from the full application image. By taking out and transferring only the essential state data (memory, execution context, configuration) rather than the complete application, resource wastage is minimized while still enabling configuration updates.
Data Source
AI summary
A mechanism for migrating an application in a process virtual machine environment. A method includes pausing execution of an application in a source process virtual machine (PVM). The method also includes recording a state of the source PVM at a time of the pausing of the execution of the application. The method further includes copying the recorded state of the source PVM into a destination PVM, wherein the destination PVM resumes the execution of the application using the recorded state.