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WasyTech Engineering

WasyTech Engineering

Systems & Performance Architecture

Core engineering and technical research team at WasyTech. Dedicated to building bloat-free, transparent micro-utilities and publishing reproducible systems diagnostics.

Systems ArchitectureHardware TelemetryKernel DiagnosticsNetwork AnalysisLocal-First Software

Articles by WasyTech Engineering

15 articles
System & Hardware8 min readSeptember 11, 2026

How to Identify Background Timer Resolution Battery Drain Using ETW, WPA, and Powercfg

Legacy processes invoking timeBeginPeriod(1) force the OS interrupt tick to 1ms, preventing CPU packages from entering deep C-states (C8–C10) and driving severe battery discharge. By leveraging ETW traces, Windows Performance Analyzer, and powercfg diagnostics, developers can isolate parasitic background timers and restore hardware-intended idle efficiency.

System & Hardware9 min readSeptember 9, 2026

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.

Developer Tools8 min readAugust 23, 2026

How to View EXIF Data Without Uploading: Local File I/O and Native Metadata Extraction

Discover how operating system frameworks like Windows propsys.dll, macOS ImageIO, and Linux libexif parse image headers directly from disk without network transmission. Learn the underlying binary architecture of JPEG APP1 markers and HEIC metadata containers while avoiding the telemetry risks of web-based EXIF viewers.

Developer Tools9 min readAugust 23, 2026

How to Decode and Verify JWTs Locally: Native CLI & Zero-Bloat Cryptographic Validation

Learn how to decode Base64Url JWT payloads and verify HMAC SHA-256 signatures locally using native Linux Bash tools and Windows PowerShell without heavy third-party runtimes. By executing diagnostics directly in your terminal, you eliminate the security risks of online decoders while leveraging hardware-accelerated CPU instructions for bloat-free verification.