Re: Linux 3.2 in wheezy

[Ben Hutchings <ben@decadent.org.uk>]

On Tue, Feb 07, 2012 at 06:09:40PM +0100, Vincent Bernat wrote:
[...]
> It  applies.  The major  point is  that with  containers, RAM  is shared
> accross containers (the same kernel is used for all containers).  If one
> container  needs for a  few seconds  200 MB,  it can  just use  them. No
> memory needs to be allocated for the exclusive of one container.
[...]

You can also allow VMs to do this with the use of a balloon driver
to reclaim memory.  But you should normally put some limit on the
memory used by a VM/container.  (One of the biggest problems people
have with LXC in squeeze is lack of the memory resource controller
in official packages.)

Ben.

-- 
Ben Hutchings
We get into the habit of living before acquiring the habit of thinking.
                                                              - Albert Camus