[dahart]

I guess I need to clarify I was talking about read/write location determinism, and not timing. Timing could affect things, but it also might not. The question is only whether the same bit was touched, not whether the entire system state is identical in every aspect.

I assumed that swap wasn't involved, and I was even going to mention it but decided against. While it is remotely possible, there's not much reason to suspect swap, Handbrake was actively running, doesn't normally use enough memory to start swapping, and people ripping DVDs usually know not to be doing other things and/or using all their memory while ripping.

That said, are you saying swap in the OS really is non-deterministic by design, or just hard to predict? And what does Genode have to do with this, assuming he wasn't using Genode?