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ivank | karma 17843 | avg karma 18.51 · 2015-07-22 12:58:48+00:00

I used http://criu.org/ a while ago to do this for Clojure REPLs

gnufied | karma 2523 | avg karma 5.35 · 2015-07-22 13:56:22

Looks really nice except having to compile custom Kernels I guess.

sdsk8 | karma 100 | avg karma 1.22 · 2015-07-22 14:32:22

but it is in user space, why the need for compile kernel?

x7f | karma 1 | avg karma 1.0 · 2015-07-22 16:04:29+00:00

Some distros (e.g Arch) don't have CONFIG_CHECKPOINT_RESTORE enabled by default.

mateuszf | karma 1088 | avg karma 1.63 · 2015-07-22 14:39:46

Did it change the startup time significantly?

ivank | karma 17843 | avg karma 18.51 · 2015-07-22 17:29:28

Yeah, it was much faster than starting up the normal way, at least for a small heap (213 ms to restore 128MB on an E5645). I didn't pursue it further because it required root (not sure if it still does) and would've required writing some kind of snapshot manager.

jkrippy | karma 29 | avg karma 2.64 · 2015-07-22 21:48:27+00:00

They're adding integration in with Docker too for Criu: http://criu.org/Docker

Here's a fun example of it in action: http://blog.kubernetes.io/2015/07/how-did-quake-demo-from-do...

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