Great post. Not sure if 200ms is fast though, you can definitely boot from zero to pid1 in <10ms.

I guess it depends on the workload, if you are snapshotting an already-loaded Python program, the time savings are huge, but if it's a program with fast startup, it's probably slower to snapshot.

> Waking up instantly on real traffic without breaking clients

is this for new TCP connections? Or also for connections opened prior to sleep?