Il 19/03/2013 18:09, Michael R. Hines ha scritto:
> Allowing QEMU to swap due to a cgroup limit during migration is a viable
> overcommit option?
> 
> I'm trying to keep an open mind, but that would kill the migration
> time.....

Would it swap?  Doesn't the kernel back all zero pages with a single
copy-on-write page?  If that still accounts towards cgroup limits, it
would be a bug.

Old kernels do not have a shared zero hugepage, and that includes some
distro kernels.  Perhaps that's the problem.

Paolo

Reply via email to