IRQ priority / interrupt affinity hacks
Also searched as: irq priority · interrupt affinity · dpc latency tweaks
What it does
Registry-deep manual control of which CPU cores service which device interrupts.
The honest verdict
Graded risky. Negligible on modern, healthy systems and easy to break devices with. Only meaningful when diagnosing a specific DPC-latency problem with proper tools — which is what Compy's latency diagnostics (in Advanced) are for.
It's on Compy's refuse list. Compy will never apply this tweak — and if a guide already talked you into it, reversibility is the whole point of the app.
The full graded entry
This entry ships inside the app, cross-linked to every related verdict in the graded book. The Blackbook publishes its verdicts here — the full write-ups stay in the book, on your rig, next to your own measurements.
The Compy Blackbook holds 191 graded entries like this one, judged against your hardware — and every change it does make is reversible, with the receipt to prove it.
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