System Shutdown Time Measurement Using Initiation and Exit Timestamps
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Solution Overview
Problem
Existing methods can only determine the time spent on system shutdown during a system reboot, failing to account for normal or other types of shutdowns not initiated by a reboot.
Innovation Solution
A method and apparatus that identify the initiation time of a shutdown instruction and the exit time of the last object to exit, using system logs to calculate the time spent on shutdown, allowing for determination regardless of the shutdown reason, including during system reboots or other shutdown types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If system reboot is performed to determine shutdown time, then shutdown time can be calculated, but the method cannot determine shutdown time for normal shutdown or other shutdown types not initiated by reboot
Solution Approach 1:
The patent applies universality by designing a measurement mechanism that works across multiple shutdown scenarios (reboot, normal shutdown, and other shutdown types) using a unified approach. The system records shutdown initiation timestamps and object exit timestamps universally applicable to all shutdown types, eliminating the need for separate measurement methods for different shutdown scenarios.
2Device complexity
If only reboot-based measurement is used, then the measurement method is simple, but it fails to capture shutdown time for normal shutdowns and other shutdown types
Solution Approach 1:
The patent applies preliminary action by recording the shutdown initiation timestamp (when the shutdown instruction is first received) and the exit timestamp (when the last object exits) during the shutdown process. These timestamps are captured in advance and stored for later calculation, ensuring that shutdown time can be reliably determined regardless of the shutdown type without adding complex real-time monitoring during boot.
3Measurement precision
If system log analysis is used to identify shutdown initiation and exit times, then accurate shutdown time can be determined for all shutdown types, but the implementation becomes more complex
Solution Approach 1:
The patent applies the extraction principle by isolating the specific timestamps needed for shutdown time calculation from the system log. Instead of analyzing the entire log, the method extracts only the shutdown initiation timestamp (earliest shutdown-related event) and the exit timestamp (latest shutdown-related event), simplifying the analysis process while maintaining accuracy.
Data Source
AI summary
A method for determining time spent on system shutdown is provided. The method may involve identifying a time at which a shutdown instruction is initiated during the system shutdown. Further, an exit time of an object that is the last to exit during the system shutdown may be identified. The time spent on the system shutdown may be determined based on the time at which the shutdown instruction is initiated and the exit time of the object that is the last to exit. The method for determining time spent on system shutdown may obtain the system time spent on the previous system shutdown regardless of the reason that the system was shut down. Further, the user may be instructed to optimize the system according to the time spent on system shutdown.