3 ms·

Doesn't that end up duplicating lots of data and work since the processes are independent? They don't share data do they?

• tomjakubowski 7y ago
  fork() on Linux (and many other OSes) shares pages between the parent/child processes in a copy-on-write scheme
  • braindeath 7y ago
    That doesn’t mean multiple long running processes will share memory though unless they actually create a shared mapping, which I think the gp is referring to. In addition to tremendous memory waste this also kills cache performance.
    • tomjakubowski 7y ago
      I'd presume the persistence / I/O process would be pretty short lived: its job is to save a snapshot to disk so there's not much reason to let it live long.
      • BubRoss 7y ago
        How does that share data between multiple Redis processes?