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diff --git a/static/usage.html b/static/usage.html index 89b9c6cd..fc1b6fdf 100644 --- a/static/usage.html +++ b/static/usage.html @@ -327,6 +327,20 @@ match up the picture and it provides it with more data vs. a traditional HDR implementation where it essentially doesn't work without a tripod and is not really at all useful on a phone unless you actually have that for it.</p> + + <h2>App spawning time and memory usage</h2> + + <p>You may notice that cold start app spawning time takes a bit longer (i.e. in the + ballpark of 100ms) than stock Android, along with higher app memory usage. This is due + to security centric exec spawning model used by GrapheneOS to provide each application + with a unique address space layout, random hardened_malloc heap layout and unique keys + / seeds for other probabilistic exploit mitigations like stack canaries, setjmp + protection and future features like randomized memory tags. Exec spawning doesn't + cause a performance cost after launching an app, and similarly doesn't cause any extra + latency for app spawning if the app was already running / cached in the background. It + isn't very noticeable on flagship devices with a high end CPU like a Pixel 3, and is a + lot more noticeable on a lower end device like a Pixel 3a.</p> + </div> <footer> <a href="/"><img src="https://grapheneos.org/logo.png" width="512" height="512" alt=""/>GrapheneOS</a> |