[Lxc-users] RAM & swap caps - what isn't allowed?

[Trent W. Buck]

twb at cybersource.com.au (Trent W. Buck)
writes:

> Some combinations of RAM and swap caps aren't allowed, and I'm having a
> hard time understanding the pattern (i.e. *why*).  From the examples
> below, I *think* I cannot assign a smaller swap cap than RAM cap.

The explanation for this is obvious when I go back to the kernel docs:

  memory.limit_in_bytes           # set/show limit of memory usage
  memory.memsw.limit_in_bytes     # set/show limit of memory+Swap usage

Since the latter number includes the former, it obviously cannot be
less.  Likewise, if the two values are equal, that should

> Also, is there a way to specify that a container cannot use ANY swap,
> i.e. the swap cap is 0?

...mean no paging out to swap is allowed.