ETW (Event Tracing for Windows)
Also searched as: etw · event tracing · event tracing for windows
What it means
A built-in Windows system that lets tools listen to a live stream of low-level events — frames being presented, drivers firing, and so on. It's the legitimate, no-injection way to measure what a PC is doing.
More detail
Because it reads events Windows already broadcasts, it doesn't touch game memory, so it's anti-cheat-safe. Compy uses it to measure your real frame rate and frametimes without injecting into anything. Proper benchmark tools are built on the same plumbing.
The Compy Blackbook holds 174 graded entries like this one, judged against your hardware — and every change it does make is reversible, with the receipt to prove it.
See Compy →