MSI Mode (Message-Signaled Interrupts)
Also searched as: message signaled interrupts · msi
What it does
Switches a device from a shared legacy line IRQ to dedicated message-signaled interrupts.
The honest verdict
Graded real. A real interrupt-latency win on a device that actually benefits (GPU / NIC / NVMe), though blanket-forcing it everywhere is negligible on modern setups — driver-dependent and reversible. Compy surfaces it as advisory, never forces it.
Where it genuinely fits a rig, Compy can recommend it — applied with a snapshot first and a one-click rollback after, like every change it makes.
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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