Why Is System Interrupts High CPU Usage? Kernel-Level ISR and DPC Diagnostics
High System Interrupts CPU usage indicates low-level driver or ACPI hardware latency preempting the Windows kernel scheduler via prolonged Interrupt Service Routines (ISRs) and Deferred Procedure Calls (DPCs). Learn to trace the exact offending .sys driver or firmware conflict using Event Tracing for Windows (ETW) and Windows Performance Analyzer without third-party driver bloatware.
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