The most detailed way to measure power consumption during modern standby is to use an instrumented system, which is a physical system that has power measurement leads connected to every major hardware subsystem of interest. In contrast, the SleepStudy tool is designed to avoid generating activity that could interfere with the modern standby performance that it measures. For example, traditional disk-based logging has the unwanted side effect of causing excessive battery usage when the disk is activated for logging. Tracking system activity and battery drain during modern standby can be difficult because the tracking itself can cause unnecessary activity and battery drain. Watch this video to learn how to use SleepStudy to find and fix components that cause unexpected battery drain.
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